The construction of drywall structures begins with the design and calculation of the amount of purchased material. It is easy to find out the number of profiles and GKL, but it is more difficult to determine how much fasteners are needed. Let's find out how to count the number of self-tapping screws per drywall sheet.
What kind of self-tapping screws are used when installing GKL?
For fastening drywall to the frame, screws of different lengths are used:
- 25 mm - when installing GKL in one layer;
- 35 mm - when sheathing in two layers.
The type of self-tapping screws is selected based on the material of the frame:
- the cladding is attached to the profile with metal screws;
- to a bar - on a tree.
It is easy to distinguish between them: hardware designed to work with metal has a more frequent thread.
Do not use one type of screws instead of another: this will definitely affect the strength of the fastening.
Fastener design provides convenience and quality of work:
- The hardware is protected from corrosion by a special coating that gives them a black color.
- The pointed thread spiral ensures easy penetration of the self-tapping screw into the metal profile and securely holds it there in the future.
- The cone head is recessed into the material and does not interfere with subsequent finishing.
- A deep cross-shaped slot on it allows you to screw in a self-tapping screw with a conventional screwdriver or a screwdriver.
When using a screwdriver, you need to act carefully: there is a high risk of drowning the screw too deeply and ruining the material. Facilitate the work: due to its design, it limits the screwing depth of the hardware.
Professionals use . They facilitate and speed up the process of installing drywall sheets at times. But the cost of such a tool is high, so it makes no sense to purchase it for a single repair.
Before calculating how many self-tapping screws will go to the structure, it is logical to familiarize yourself with the rules and regulations for their placement. Here the following nuances are taken into account:
- The distance between adjacent screws must be more than 10 cm, otherwise, when screwing in, the sheet gypsum will begin to crumble.
- When leveling walls or installing partitions, a step of 25–35 cm is taken between the attachment points. It is reduced to 15–20 cm if it is planned to cover the surface with heavy material, such as ceramic tiles, in the future.
HELPFUL INFORMATION: Is drywall harmful? The composition and environmental friendliness of the material
- More hardware goes to the ceiling sheathing, since they are attached more often: the step is 15–20 cm. The rule works here: the thicker and heavier the drywall, the smaller the distance between the attachment points.
- When installing in two layers, the first one is fastened less often - every 45–60 cm. The screws that fix the second layer are 10 cm longer. When screwed in, they additionally fix the first one. This reduces the consumption of hardware and frees you from unnecessary costs.
- The number of required attachment points increases with the construction of curved structures. Here the pitch between the screws is chosen so as to fix the desired surface shape.
Calculation of the number of screws
It is produced according to the frame scheme drawn up. It is clear that the number and dimensions of the guides, as well as the jumpers between them, will be individual for each case. General recommendations are as follows:
- For walls, the distance between the guides is 40 or 60 cm. This step allows you to place the joints of the sheets on the surface of the profile.
- The number of horizontal jumpers depends on the dimensions of the room (one sheet of drywall is often not enough in height), as well as on the requirements for structural rigidity (mandatory when erecting partitions, and when leveling walls they can be neglected).
- For ceiling structures, frames are constructed in the form of cells with dimensions of 40 × 40, 40 × 60 or 60 × 60 cm. This structure ensures a minimum of trimming and joining of elements on the profile.
- 11 self-tapping screws for each post (the sheet is located vertically, its length is 2500 mm, the fastening pitch is 25 mm).
- Based on 4 racks - 44 screws.
- Plus 6 - for fastening to the upper and lower horizontal jumper (three for each - just place one self-tapping screw between adjacent vertical posts).
- A total of 50 pieces will go to the sheet.
Consumption of self-tapping screws per 1 m2
Table of consumption of fasteners for wall cladding in one layer according to the Knauf system (C 623.1):
For double wall cladding (C 623.2):
For a partition with drywall fastening in one layer (C 111):
For a partition with a two-layer sheathing (C 112):
For false ceiling:
Online self-tapping calculator for a drywall sheet
In order not to do manual calculations or check yourself, it is convenient to use our calculator, which calculates according to the Knauf formula.
The roof, as the main protective element of the house, requires increased attention to the choice of its constituent parts. The article describes the principles for determining the required number of self-tapping screws for arranging a corrugated roof. The proposed material will introduce you to the factors affecting the amount of fasteners; you will find out how many self-tapping screws per 1 m 2 of roofing profiled sheet will be required in one case or another, what parameters determine the quality of hardware and what to consider when buying them.
Roofing from a profiled sheet Source vdkonline.ru
On attention to components
Profiled sheet is one of the materials with a wide range of applications. In suburban housing construction, it is used for cladding wall or roof structures, as well as in the construction of fences. The material is especially popular as a finishing coating for the roof. The reason for such love is its operational characteristics: strength, light weight and easy installation. An important factor is the budgetary cost and a variety of colors and profiles, allowing you to choose corrugated board for any architectural project.
When arranging the roof, the main attention is paid to the quality of the profiled sheet. Each homeowner, before buying, pays attention to the sheet parameters that affect its operational properties: the thickness of the metal and the protective zinc layer, the type and thickness of the polymer coating. Fasteners are traditionally considered a related product; not only homeowners, but also contractors, wanting to save money, buy fasteners on a residual basis, focusing more on price than on quality.
Profile mounting option Source goldkryshi.ru
Such a frivolous attitude to fasteners leads to a very rapid occurrence of leaks, even if the roofing material itself and the thoughtful design of the roof do not cause any complaints. Small savings on fasteners turn into unforeseen (sometimes significant) waste of time and money to correct defects.
The choice of low-quality hardware for fixing the roof leads to the fact that, under the influence of atmospheric moisture, the self-tapping screws begin to become covered with a corrosive coating and can significantly weaken the installation. In advanced cases, parts simply fall off, and the roof loses its tightness. The solution to the problem lies not only in the purchase of excellent quality fixing elements, but also in their correct use, first of all, in determining the required quantity. To find out how many self-tapping screws are needed to fix the corrugated board on the roof, you need to understand the factors that affect the volume of purchases of consumables.
Standard item Source stroim-dom.radiomoon.ru
On our site you can find contacts of construction companies that offer the service of reconstruction and restructuring of houses. You can directly communicate with representatives by visiting the exhibition of houses "Low-Rise Country".
About self-tapping screws: what affects their number
The number of screws that will be needed to obtain a high-quality result depends on the following factors:
Scope of use. Corrugated sheet can be mounted on the roof, used for finishing the facade of a house, shed or garage, used in the construction of a fence. For each type of work, the consumption of hardware will be different.
Weather in the region of construction. The consumption of fasteners is affected by the strength of the wind and the amount of snow cover; the higher the load, the more self-tapping screws will be required for reliable fixation. The magnitude of the loads can be found in special tables; she should not be underestimated. A carelessly fixed roof covering may not withstand the pressure of wind or snow and deform (in the worst case, collapse). One way or another, the incorrect calculation of self-tapping screws for corrugated roofing will cause new costs.
Place of attachment - the base of the wave Source pinterest.co.kr
Coating installation scheme. The profiled sheet is cut from rolled steel, so its length varies over a fairly wide range (on average from 1.5 to 10 meters). If a profiled sheet is used for installation, equal in length to the height of the slope, it turns out that the laying takes place in one row, and the number of fasteners required is reduced.
Calculation principle
The question of how many self-tapping screws are needed per 1 m 2 of corrugated roofing should take into account the fact that for competent installation one cannot do without three types of fasteners:
35 mm long. Hardware of this length is suitable for mounting a profiled sheet to wooden crate structures.
20 mm long. With screws of this length, adjacent profiled sheets are fixed to each other, without mounting to the crate.
Length 70-80 mm. Such parts will be required to fix additional parts (ridge, cornice, corner strips and plugs) that perform a protective function.
Types of self-tapping screws Source metizing.ua
Installation of a roof from a professional sheet is carried out according to certain rules; attachment points are selected according to the following scheme:
Assembly work begins from the side of the eavesth slats. The imposition of adjacent sheets in one row is carried out on one wave. The overlap of the upper and lower rows is about 20 cm (depending on the angle of inclination of the slope).
Top and bottom edge of the sheet. Each wave deflection is fixed with a self-tapping screw.
Side edges and overlap areas. To improve the tightness, the screws are attached to each wave and are arranged not in one line, but in a zigzag. A step of about 0.5 m is set between the attachment points. This method has shown its reliability in areas with strong wind loads.
Profiled sheet area. Self-tapping screws are screwed through the wave randomly (in a checkerboard pattern), which helps to increase the reliability of fasteners and avoid overspending of fasteners.
Video description
About the roofing metal screw in the following video:
The solution to the problem of how many self-tapping screws per sheet of corrugated board is needed for the roof depends on the chosen installation method. Given this scheme, an example of calculating the required number of screws may look like this:
Chosen for the roof profile sheet with parameters 1.1 by 8 m. The step of the crate is standard - 0.5 m.
For mounting one sheet Approximately 18 screws will be needed.: for fixing in the upper and lower longitudinal sides - 5 hardware each, for fixing the sheet area - 8 more pieces.
Total number of fasteners can be obtained by multiplying 18 by the total number of sheets.
Average per 1 m 2 roofing surfaces consumed from 7 to 9 hardware.
The consumption of fasteners will be increased with other roof parameters. The steeper the roof structure, the denser the fasteners are. Consumption will also increase in areas with snowy winters.
There is only one right way Source krrot.net
Real consumption self-tapping screws per 1m 2 profiled sheets for roofing are always slightly higher than the calculated one; some of the parts may be lost or defective, so the hardware is purchased with a small margin (at least 5% more).
Mounting screw quality noticeably affects the life of the roof, so you should not resort to penny savings when purchasing hardware.
About the features of roofing screws
Fasteners for roofing are made of the following materials:
Stainless steel. The most common material of manufacture, such self-tapping screws are not afraid of corrosion, they are durable, securely fixed and have a long period of flawless operation.
Alloy steel. The addition of certain additives (nickel, chromium) to stainless steel makes hardware resistant to dynamic loads, increases strength and corrosion resistance.
Carbon steel. The main advantage of this material is strength and reduced ductility.
Video description
About the choice of screws in the following video:
Galvanizing. Steel elements are coated with zinc, after which they acquire a silver or yellowish color and additional protection against corrosion. Sometimes fasteners are protected by oxidation or phosphating, which makes them black and acquire additional wear resistance.
Externally, the self-tapping screw looks like a screw with a profile drill tip, which allows you to fix the fastener without pre-drilling holes. Mounting screws for roofing are characterized by the following parameters:
Head. More common are hardware with a hexagonal head, but it can also be countersunk or semicircular. Parts are fastened with a screwdriver or wrench.
Drill part. Working with self-tapping screws does not require the preparation of holes; parts are equipped with a drill tip.
Ensuring tightness connections. The hardware is equipped with an elastic rubber gasket and a flat washer.
Mounting method. Self-tapping screws can be fastened manually, as well as using a screwdriver or a drill with a special nozzle, which greatly speeds up and simplifies the work.
A variety of self-tapping screw heads Source stroyres.net
About self-tapping screws: what to consider when buying
Hardware for profiled sheets offered by manufacturers have the following parameters:
Length. The most popular products are 29, 35, 50, 70 mm, in general, the length varies between 16 and 150 mm.
Diameter. It is selected depending on the thickness of the roofing and is 4.8–6.3 mm. Such self-tapping screws can independently (without preparation) drill metal up to 1.2 mm thick.
Threaded part. It should be at least 3 mm longer than the thickness of the corrugated board.
Quantity. The package may contain from 100 to 250 pieces.
Colour. Self-tapping screws can be selected according to the color of the roofing material used, which makes the fasteners almost invisible.
The protective coating can be paintwork. When using a screwdriver, a high-quality coating does not peel off, while maintaining the durability of the connection.
The color palette of roofing hardware Source hobiz.ru
When purchasing the required number of self-tapping screws per 1 m 2 of a roofing profile, it is recommended to pay attention to such an indicator as tear resistance. Fasteners during operation experience significant loads, so high requirements are placed on their strength. Parts undergo rigorous testing during production. A sign of a high-quality self-tapping screw is an indicator of tensile strength, reaching 150-170 kg / cm (with allowable 100-102 kg / cm).
High-quality roofing screws will not cause trouble during operation; when buying, they can be identified by the following indirect signs:
The presence of a stigma stamped on the head.
Presence of zinc coating, the thickness of which is indicated on the package and is at least 12 microns.
Paintwork uniform, no cracks.
Washer thickness. Must be greater than 2 mm.
The appearance of the rubber gasket. It should not flake off the washer. Too porous or too hard rubber will not be able to withstand the loads and will cause leaks.
The use of a screwdriver in the arrangement of the roof Source info-krovlya.ru
Conclusion
In addition to the number of fasteners, when buying, you need to decide on their size. The necessary recommendations are usually present on the packaging. If they are not specified, you can choose hardware according to the desired size yourself. Self-tapping screws of such length are selected so that the length of the threaded part exceeds the total thickness of the connected profiled sheets by at least 3 mm.
Roofing from corrugated board has recently become very popular in private low-rise construction, as it has light weight, long service life, high bearing capacity and affordable price. However, when reading reviews about this material, you can notice the negative opinions of homeowners. Experienced roofers claim that the most common reason for the poor quality of a profiled sheet coating is unskilled installation, fastening defects. In order for the roof to serve for a long time without leaking, it is necessary to properly lay and fix the roofing material. In this article, we will tell you how many self-tapping screws are required to fix each profiled sheet, as well as what their layout looks like.
The main advantage of corrugated roofing is its light weight, which allows this roofing material to be mounted on a sparse crate, which reduces construction costs. The profiled sheet is made of galvanized steel coated with a polymer or paint. The strength, durability and tightness of the structure depend on reliability. Installation is carried out without pre-drilling holes, therefore special roofing screws are used, to which the following requirements are imposed:
- Self-tapping screws for profiled steel roofing have a sharp drill tip that easily cuts through durable metal without pre-drilling.
- Self-tapping screws for attaching corrugated board to the roof are made of galvanized steel, which withstand constant contact with water, but do not enter into oxidative reactions with it.
- To fasten the roofing material, self-tapping screws are used, equipped with a sealant made of latex, rubber or neoprene, which seals the holes on the roof surface.
- The size of fasteners for fastening the profiled sheet should be 2-3 mm higher than the thickness of the lathing beam and the sheet of roofing material.
- Roof fasteners are 19-250 mm long and 4.8-6.3 mm in diameter. The most popular size of self-tapping screws is 4.8x28 mm, 4.8x50 mm, 4.8x60 mm.
- The size of the fastener for the ridge roof profile is 4.8x60 mm.
- The heads of the self-tapping screws for the profiled sheet are painted by the manufacturers in the color of the roof so that they are visually invisible.
Pay attention! High-quality fasteners made of galvanized steel are not cheap, while the consumption of self-tapping screws for fastening each sheet is 8-10 pieces per 1m2. At the same time, the consumption during the installation of end sheets and shaped elements of the roof increases by 1.5-2 times.
Mounting scheme
Inexperienced craftsmen often wonder how many self-tapping screws are required to fasten each sheet of corrugated roofing to the roof, and what tools are needed for this. It is important that the increased consumption of fasteners during the installation of the roof reduces the tightness of the coating and leads to deformation of the material. If you are “greedy” during fastening, the corrugated board will not withstand intense felt loads. In order not to be mistaken, experienced craftsmen chose the optimal layout of self-tapping screws during their work:
- During the fastening of the profiled sheet, the screws are screwed into the strictly lower part of the wave, adjacent to the lath of the crate.
- When fixing the roofing material on the roof, the self-tapping screws are twisted strictly perpendicular to the lathing rail, preventing the fastener from deviating from this axis.
- The maximum allowed step between self-tapping screws when installing a profiled sheet is 50 cm.
- Self-tapping screws are screwed along the edges of the sheet every second wave, and in the middle - in a checkerboard pattern. The end sheets are fixed to each lath of the crate without gaps to reduce the risk of tearing off the coating by the wind.
- The consumption of fasteners for mounting 1 sheet is 6-8 pieces, based on this indicator, the required number of self-tapping screws is calculated.
- It is allowed to screw fasteners into the upper crest of the wave only at the joints of two sheets of corrugated board.
Important! The light weight of profiled steel allows the use of battens with a step of up to 1 m, the size of the laths of which is 40x40 mm or 60x40 mm. The design of the truss frame is not complicated. Despite their low weight, profiled sheet roofing is subjected to heavy loads, so the quality of fasteners is subject to increased requirements.
Laying technology
Decking is a modern roofing material that is used to cover roofs with a slope of 8 degrees. The technology of laying the material depends on the angle of inclination of the slopes of the structure. Installation of sheets overlap to ensure the tightness of the joints. Given the light weight of the profiled sheet, the roof with such a coating has a high windage and experiences intense wind loads, so the step between the screws should not exceed 50 cm. The corrugated board is laid as follows:
- Pitched roofs begin to break from the bottom of the end, laying the first sheet with a ledge of 2-3 cm.
- When laying, the top row is always laid on the bottom row to prevent melt or rain moisture from flowing into the joints.
- The horizontal minimum overlap between the sheets is 10 cm, which is 1 wave. The smaller the slope of the roof, the more they overlap.
- The vertical overlap between the sheets is 20-25 cm.
- If the slope of the roof slopes is less than 15 degrees, the vertical and horizontal joints are treated with a silicone-based sealant to reliably seal the seams.
- Each sheet is fixed to the lower and upper rail of the crate in each wave, the remaining screws are screwed in a checkerboard pattern so that the maximum distance between them does not exceed 50 cm.
- Fasteners are screwed into the lower part of the wave, adjacent to the crate, so that when a wind load appears, there is no leverage effect.
- A ridge profile is installed on the connection of the slopes, fixing the part with self-tapping screws in each wave.
Please note that after installation it is important to control the condition of the fasteners on the roof surface. They should not loosen or untwist. To prevent intense wind load from deforming the roof, it is necessary to quickly tighten it with a screwdriver. If pockets of rust appear at the attachment points, it is better to replace the self-tapping screws with galvanized ones.
Video instruction
The roof of any house must be reliable. Strongly protect the building from snow, wind and rain.
Require less energy and funds for its construction. Meet the aesthetic needs of the owner.
That's why many prefer profiled sheet(metal profiled sheet), as the best option for the construction of the roof.
Its advantages:
- polymer protection keeps it from corrosion;
- he is indifferent to climatic surprises;
- non-toxic;
- resistant to fire;
- varied in color and types;
- affordable.
is it method of fastening corrugated board with self-tapping screws another advantage? - Yes, there is nothing complicated about it. The main thing is to know what and how to do it.
Specifications of the profiled sheet here.
Requirements for fasteners
The fastening of the profiled sheet on the roof is carried out with roofing screws. A large sheet area, metal rigidity and low weight create a load on the fasteners. The stability of the roof also depends on the reliability of fastening in case of strong gusts of wind. The type of frame is taken into account: it can be metal or wood.
- Self-tapping screws that are attached to a metal surface are made with fine threads and a tip, like a drill. With high strength, they are easily screwed into the metal surface without requiring holes.
- Self-tapping screws designed for wooden frames are very similar to simple screws, only with a larger head diameter. Their strong steel is also able to break through the roofing profiled sheet without drilling.
Mounting screws come with a different head: cylindrical, hexagonal, semicircular and spherical. The slots are also different. They can be in the form of an asterisk or a cross. Curly or straight.
For the installation of corrugated roofing most of all self-tapping screws with a special sealing gasket made of artificial rubber (EPDM) are suitable. The contact with the metal surface is so tight that there is no risk of water penetrating through the joint. This is facilitated by a special protrusion along the edge of the hexagon. It enhances the strength of the head and adds reliability to the seal.
Self-tapping screws for roofing from corrugated board are easy to pick up and by color, as they are available with a different decorative coating, which also has a protective property.
The presence of marking indicates the quality of fasteners. It is worth choosing self-tapping screws with elastic thick (2 mm) neoprene pad. The zinc coating should be within 12 µm. Then they last a long time and won't rust. You can check the quality yourself: squeeze the washer with EPDM with pliers and check the integrity of the paintwork. The gasket must not come off the metal washer.
How to correctly calculate the consumption of self-tapping screws per 1m2 of profiled sheet for roofing
Features of fastening corrugated board
Self-tapping screws are screwed into that part of the sheet that fits snugly against the frame boards. From below and from above in each wave. And from the sides - into the crate in steps of 50 cm. In order for the sheets to fit snugly in places of overlap, fastening is carried out in a checkerboard pattern, through a comb. For strength, the pieces of the profiled sheet are interconnected using self-tapping screws 20 mm long.
How to tighten a self-tapping screw
How many self-tapping screws per 1m2 of profiled sheet for roofing
The calculation is made before the start of installation work. To fix a square meter of profiled sheet, 7 - 9 self-tapping screws are required. This number is multiplied by the number of metal sheets that are prepared to cover the entire roof surface. However, you need to buy with the expectation that the screws can break or be lost.
What crate is needed for a roofing profiled sheet
The crate on which the profiled sheet is mounted can be 
metal or wood. It all depends on the purpose of the building. For industrial or outbuildings, it is made of metal. The slope of the roof here is minimal, the load is significant, so the frame should be more stable.
In residential buildings with a steep roof slope, wooden blanks are used under the crate. Dimensions for timber - 40 mm to 40. 50 mm by 50 is allowed. The thickness and width of the board are 32 mm and 100 mm, respectively. These standards are used under profiled roofing sheets.
In connection with the expected load and the angle of the roof, the crate has a different pitch.
When the roof slope is less than 15 degrees, the pitch of the crate depends on the type of profiled sheet.
- Decking marked C20 requires a full frame. The overlap of adjacent sheets is 20 cm. This is approximately the length of one wave.
- Profiled C35 lay on the frame in increments of 30 cm with the same overlap.
- Profplast C44 mounted on the crate with a step of 50 cm.
An angle of 15 degrees provides step in 30 - 40 cm with little with an overlap of 10 - 15 cm.
Fastening a profiled sheet with self-tapping screws requires that the fasteners be twice as long as the crate board. If the beam is 75 mm wide, then the screw should be 150 mm.
With expected significant loads, the frame is mounted in two layers. The lower crate parallel to the ridge is made with a discharged step of 50 - 70 cm.
How to properly fix the roofing profiled sheet to the crate
With the right choice of the type of material and fasteners, the installation of corrugated roofing on the roof is not a complicated process. It is important to follow the rules for fastening and laying roofing.
Fastening the profiled sheet with self-tapping screws on the roof is carried out in the following order:
- Before starting work, a wooden base treated with an antiseptic. In the future, this will save the wooden frame from destruction and extend the life of the roof.
- The reliability and strength of the roofing surface will depend from the tightness of the metal sheets to the frame. Protecting the building from the influence of moisture, wind, temperature changes is one of the main functions of the roof.
- So, how to fix the profiled sheet on the roof? The metal is attached to the crate at the bottom of the corrugation. The overlap of leaves on each other in one row is one or two waves. Between themselves, the rows are connected with an overlap of 1 - 2 cm.
- The fastening of the upper and lower parts of the profiled sheet to the crate is carried out in each wave. Fasteners of the side parts - through time.
- The joining of profiled sheets to each other is carried out with rivets using hand guns. To prevent the washer of the self-tapping screw from warping, it should be screwed strictly vertically to the surface of the sheet. This will ensure a tight fit and seal. The longer the screw, the more likely the risk of misalignment.
- The connection of the elements of the ridge and corrugated board through its protruding part will create a high fit. If the slope of the roof is not so gentle, put additional gaskets to seal, directly under the ridge at the bottom of the wave bend. In a heavy downpour with wind, water will not pour under the ridge. Read also about the installation of additional elements.
- To save installation time and avoid uneven laying of sheets, they are installed in blocks of three to four pieces.
- The profiled sheet is important to cut correctly. It is better to do this with electric scissors. Hand held ones will work too. If you need to make cuts along the oblique, use a jigsaw.
- To ensure that the cuts do not corrode, they are treated with an anti-corrosion agent.
- The master must be careful, being on the roof, not to accidentally damage the surface of the flooring. After 2 months, it is necessary to tighten the thread of the self-tapping screws. When installing the roof, the profiled sheets could move and weaken the fastening density.
Profiled sheet fastening scheme
How to properly screw in a screw
Profiled sheet consumption per 1 m2 of roof: coefficient and calculation calculator
Calculation example for a roof of complex shape
The slopes of complex roofs, such as hip and mansard, are made in the form of trapezoids and triangles. The calculation of the amount of material required begins with a detailed layout of the coating sheets in the drawing. Having specified all the overlaps and overhangs, determine the entire area. An accurate calculation will make it possible to minimize waste.
The length of the sheet is taken as the basis. Depending on the type of professional plastic, it varies from 500 mm to 6500 mm.
The number of fasteners is calculated as follows: If 9 self-tapping screws are needed per square meter, then it is enough to multiply 9 by the coverage area.
More complex calculations are best left to specialists.
Useful video
We suggest you watch the video instructions for attaching the profiled sheet to the obreshetka:
Consumption rates for corrugated board per 1m2 - how to calculate
Calculation of the number of self-tapping screws per 1m2 of profiled sheet + video lesson
Fastening corrugated board on the roof with self-tapping screws: features and types of fastening hardware
How to join the corrugated board on the roof
For more than ten years, corrugated board has been used as a material for roofing, building fences, cladding facades and walls. This is not surprising, because the profiled sheet has a lot of advantages and benefits, including: ease of installation, durability, aesthetics.
It doesn’t matter for what purposes the material is purchased, but it is important to know what the consumption of corrugated board will be per 1m2 of roofing, walls, fences, etc.
At the moment, there is no single norm for the consumption of corrugated board, because the consumption of corrugated board per 1m2 depends on many factors. Only having determined the features and technical characteristics, it is possible to accurately calculate the material.
Consumption rates for corrugated roofing
Reliability and tightness are the main indicators of a quality roof. The roof of the profiled sheet should not miss a single drop of water. The roof protects not only the attic or attic, but also diverts water away from the facade of the building and the foundation to prevent their destruction. Naturally, in some cases, you will need to purchase a little more roofing material, but without this, nowhere. Saving the only time on the material, making a minimal overlap or a roof of insufficient length, you can incur serious financial losses. Therefore, you need not save on profiled sheets and know the rules for their installation.
Vertical mounting
It is important to know that professional sheets should go one on top of the other, i.e. overlap installed. Of course, the consumption will increase a little, but without this you can not count on a high-quality roof, serious rain will lead to trouble. We are talking about the fact that the material should go on top of each other from all sides.
What should be the overlap? You can answer this question by looking at the design of your future or existing roof. The slope is the main parameter on which material consumption and overlap dimensions depend.
Important! To protect your roof from leaks as much as possible, use roofing sealant.
Eaves overhang
The facade and foundation must also be protected from precipitation, this moment must be foreseen and a sufficiently long canopy should be made to prevent rain from falling on the building. To do this, you need to install profiled sheets a little further than the crate.
The size of the visor directly depends on the brand of material used, because they have different strengths. If you hang the sheets at a great distance from the wooden crate, you can lose the roof. Therefore, it is important to know the brand of profiled material and, accordingly, its strength.
Also remember that you need to consider whether gutters will be installed to drain water. If you plan to install a gutter, then it does not make any sense in a large cornice overhang.
Therefore, it is necessary to take into account not only the consumption of corrugated board, taking into account the overlap, but also the size of the visor.
Horizontal mounting
In order for the joints of the profiled sheets to be as reliable as possible and not a drop of water gets into them, it is necessary to make a competent overlap of the material. Therefore, before buying sheets, you need to calculate the corrugated board consumption per m2 and the number of self-tapping screws per 1m2.
The size of the overlap of adjacent sheets depends on their brand. And do not forget that, just like with vertical installation, you need to take into account the slope of the roof.
Gable overhang
Roofing material must extend beyond the redistribution of the crate, not only in the place of the cornice overhang, but also in other parts. It turns out that the sheets should be longer than the crate along the entire perimeter, provided that gutters are not used to drain precipitation.
Front overhangs can be installed in two ways - using a wind board and a wind bar. In both cases, the consumption of corrugated board per 1m2 of roofing will vary somewhat.
Output
Summing up, it should be noted that the consumption rates of corrugated roofing depend on the following points: the grade of material used, the method of installation - vertical, horizontal, overhang - cornice, frontal.
The layout of the material, indicating the key points, will significantly simplify life and save time and eliminate rash expenses.
The consumption rate of a profiled sheet can be obtained if the total size of the roof is divided by the size of one sheet. The sheet area can be found out at the time of purchase (sheets of different brands have different sizes).
You also need to understand that the useful area of \u200b\u200bthe material will be less than the total, since there will be a large number of overlaps with other sheets.
If we talk about the calculation of the material that will go to formwork, wall installation, cladding, then it will be determined by the above method. Only in the calculations will only be taken into account the distance of entry of one sheet onto another.
Overlap of corrugated board on the roof
Metal roofs visually increase the status of the owner and you can’t argue with that. Of course, a lot depends on the material used and the installation technology. For example, if there are sheets of tin on the roof, then there is little aesthetic here, but when using the same corrugated board, the picture will change dramatically. Many developers are switching to metal roofs because they are much cheaper than other coverings. In this article, I will tell you what the overlap of corrugated board on the roof should be, how to properly lay it, and consider the most suitable grades of corrugated board for laying on the roof.
The need for ventilation
As you know from the school course, a metal coating cannot pass moisture through itself, but it is easy to condense it. Due to the lower temperature, the metal perfectly collects moisture on its surface, as a result of which the rafter system collapses much faster than usual. You can solve this problem with the help of ventilation ducts. 
The first part of natural ventilation should be located after the roofing cake, or to be more precise, between the insulation and the coating. As a rule, a control crate is created to create an air gap. This roof structure not only facilitates the rapid elimination of moist air, but also strengthens the entire system. Since the sheet of metal does not belong to a heavy coating, it is not worth creating a very sophisticated crate, otherwise, this will affect the final cost of the object.
If you are faced with the need to create ventilation, then you should think about insulating the lumber included in the truss system. To do this, they are treated with antiseptics and flame retardants. The former protect the wood structure from decay and mold, while the latter slow down the fire. With an insulated roof, thermal insulation is also at risk. The ingress of moisture into this material dramatically reduces its ability to retain heat.
The second ventilation passage should be located in the roofing pie itself. This is justified by the fact that if, nevertheless, water gets on the insulation boards, they will dry out naturally. To create an air gap, small slats are laid on top of the thermal insulation, they raise the vapor barrier layer, thereby creating another passage for ventilation.
If you are wondering: “where does the condensate come from?”, then now I will explain everything to you. When working, the human body releases liquid into the air. Good examples include playing sports or cooking. The air is humidified even during passive rest, when we just breathe. The warmed moisture rises to the interfloor ceiling and, due to the condensation process, settles on the colder side, i.e. in the attic. The same thing happens there.
Roof deck marking
If you did not know, then corrugated board is a universal building material. It can be used not only as a coating, but also to create formwork, interfloor ceilings, erect fences and much more. 
Let's look at the types of profiled sheets often used in the roofing industry.
- From 8. This sheet of corrugated board differs in its configuration from all the others. The height of its corrugations is only 8 millimeters. The waves are repeated in steps of 80 millimeters. Due to such a large distance, the width of the material shelf is 10 times the height of the corrugation. From this we can conclude that the material does not have very high rigidity and for its installation it will be necessary to build a crate in increments of a maximum of 60 centimeters. As a rule, such sheets of corrugated board are produced with a polymer coating. The coloring of metal products is quite diverse, so there is plenty to choose from. If we consider foreign materials, then an identical profiled sheet can be found under the marking T6 or T8.
- From 10. As you understand from the numbers, this material is slightly different from the previous one. Despite its small corrugation height, it has an acceptable load-bearing capacity. The maximum step of the crate can be 80 centimeters.
- From 18. This brand of profiled sheet is very similar to the Finnish product called RAN. Here you can see wide shelves reinforced with a stiffener. This removes the ability of the material to knock during strong gusts of wind. It has a good aesthetic appearance, which makes it more popular.
- From 21. The height of the corrugation is not high, however, the resistance to mechanical stress is at the proper level. The material achieved this with their frequent and symmetrical arrangement. The metal sheet has a convenient joining of the extreme corrugations and due to this, the convenience of laying increases.
- H 57. This product has gained the greatest popularity and no wonder, because it contains the most optimal dimensions, bearing capacity and price.
- H 60. This material has a dual purpose and can be used both as a roof covering and as a base for soft roofs. Such sheets go on sale in the form of rolled steel with a width of 1250 millimeters. As for the length, it can reach 12 meters.
- NS 35. The galvanized basis is strengthened with additional stiffening ribs. Due to this, the maximum step of the crate can be 1.5 meters. Polymeric paint is used as a protective coating.
- H 114. To date, this variety is the most durable of all known. Such a sheet of metal has a maximum corrugation height and reinforced stiffeners located in 80 mm increments. The thickness of the profiled sheet reaches 1.1 mm. Available for sale from 2 to 12 meters in length. From above the product is covered with polymers, and from below with paint.
Assembly process
If you are wondering “what is the best sheet pitch for a corrugated roof?”, then everything is simple here. The step of the sheets will primarily depend on their width, as a rule, it is the same for all roofing varieties and is 1250 millimeters. Next, you need to deal with the slope of the slope itself. If the roof is flat, then the step will be less, if steep, then more.
By reducing the distance between the axes of the sheets, you increase the overlap. The larger it is, the more difficult it will be for moisture to penetrate the roofing pie. Of course, there are some nuances here. If you overlap more than 20 centimeters, then this will not lead to anything good. After all, the useful area of \u200b\u200bthe sheet will decrease many times over, and the mass of the roofing sheet will increase.
Consumption of corrugated board per 1m2 of roofing is determined individually and there is an explanation for this. Most developers try to cover the length of the roof slope with one sheet. This is correct, in this way you will reduce the number of seams, which will make the surface more airtight. 
Installation of profiled metal sheets takes place according to the following scenario:
- All work begins with the preparation stage. If you are laying corrugated board in wet weather, it is very important to choose good shoes with non-slip soles and wear a mounting belt. The fact is that on a wet metal surface it is very easy to slip.
- Next comes the fastening of the corrugated board to the crate. As fasteners, it is best to use special screws. They are equipped with a special rubber lining, which makes the hole more airtight.
- Since the sheet of metal will cover the entire length of the slope, the installation process can be started from either side of the roof.
- At the beginning, the first sheet is mounted. It is exposed in such a way that satisfactory overhangs remain below and on the side, and only after that it is screwed to the base. The fastening elements should be located at the bottom of the wave so that the docking occurs as tightly as possible.
- The second sheet lies on the first with the necessary overlap. To fasten the profiled sheets together, the screws are placed in the crest of the wave.
- Thus, the entire surface of the roof is closed, and at the end additional elements are mounted.
Although profiled sheets have a protective coating, over time it collapses. In some regions of the country, this process is much faster. To solve this problem, you can use ordinary paint.
During the operation of this roof, a situation may arise when sudden gusts of wind will create some noise. The reason, most likely, will be covered in fasteners. During routine inspections, pay attention to each self-tapping screw, because one gum that has flown off can contribute to noise.
Additional elements
All kinds of details can be installed as additional elements on the roof. For example, a ventilated ridge, wind slats, overhang fillers.
Since a lot of moisture will accumulate on a metal roof, a ventilated ridge will not be superfluous here. It differs from the usual by the presence of perforation. By blocking access to birds and small rodents, it allows moist air to leave the attic space on its own.
Overhang fillers are a very handy item if you need to protect your lumber from pests but want to leave passages for natural ventilation then this is the best solution for you.
Consumption rates for corrugated board - what should be taken into account when calculating?
The professional flooring is traditionally applied as a roofing covering, and also for facing of facades and production of wall designs. In recent years, profiled sheets have gained great popularity as a material for the construction of various fences.
But for whatever purposes it is planned to use a profiled sheet, it is always necessary to know what will be the consumption of corrugated board per 1 m2 of roof, facade or fence area.
In construction, there is no generally accepted fixed consumption rate for corrugated board. The consumption of a profiled sheet per 1 m2 depends on many different factors. Profiled sheet consumption rates are determined during the design separately for each structure, taking into account its individual features and technical characteristics.
Profiled sheet consumption rates for roofing installation
The most important characteristic of any roofing is its tightness. Water should not enter the under-roof space either during the heaviest rains or snowfalls, or during spring snowmelt.
But the roofing protects not only the attic or attic, the corrugated board must be installed so that a minimum amount of rainwater gets on the facade of the building. Therefore, when installing corrugated board, several basic rules must be followed.
Vertical overlap
First of all, it should be borne in mind that when laying on the roof, profiled sheets must necessarily overlap each other. Moreover, the overlap is performed both between adjacent sheets and between the upper and lower rows of corrugated board. Depending on the size of the overlap, the rate of consumption of corrugated board on the roof also changes.
The size of the overlap between the rows of profiled sheet depends on the slope of the roof. The smaller the angle of inclination, the more the profile of the top row should overlap the bottom sheet.
Eaves overhang
In addition, to protect the outer wall of the building, the roofing should form a kind of visor that prevents water flowing from the roof from falling onto the facade of the house. To do this, the profiled sheet is extended beyond the roof sheathing by the amount of the cornice overhang.
In the area of the eaves, significant wind loads act on the corrugated roofing, tending to tear the roofing from the crate. Therefore, the size of the cornice overhang directly depends on the strength, and, consequently, the height of the wave or trapezium of the profiled sheet.
The size of the cornice overhang depends on whether it is planned to install gutters along the edge of the roof to drain water flowing from the roof.
From the above, it follows that the size of the eaves also significantly affects the consumption of corrugated board per 1 m2 of roofing.
Horizontal overlap
The next thing to consider when calculating the consumption of corrugated board when installing a roof is the amount of overlap between adjacent sheets of corrugated board in one row.
It is necessary so that drops of water cannot penetrate the roof at the joints of the corrugated board. The amount of overlap between adjacent sheets also depends on the height of the profile.
Gable overhang
The roofing should protrude beyond the building spot not only in the area of the eaves, but also on the gables of the building. This ledge is called a gable overhang. Most often, two variants of the device of the gable overhang are used - with the installation of a wind board or a special wind bar. At the same time, the consumption of the profiled sheet for the roof is different in both cases.
From all of the above, we can conclude that when calculating the consumption rate of a profiled sheet on a roof, you need to take into account:
- the amount of vertical overlap;
- the amount of horizontal overlap;
- gable overhang size;
- eaves size.
The easiest way to do this is to draw a diagram of the layout of corrugated sheets, taking into account all the characteristics of a particular roof.
If we divide the coverage area calculated according to the scheme by the area of one sheet of corrugated board, we will get the consumption rate of the profiled sheet per 1 m2 of roofing. The sheet area can be obtained from the corrugated sheet seller, and it will be different depending on the brand and height of the corrugation or corrugated sheet wave.
In this case, you need to pay attention to the fact that in the technical characteristics of the profiles they usually give the value of the total and useful area of \u200b\u200bthe sheet. The useful area is always somewhat smaller, since it takes into account the size of the overlap between adjacent sheets of corrugated board in the same row.
If it is also planned to use corrugated board when cladding the facade or arranging the fence, the consumption per m2 is determined according to the same principle. The only difference is that when calculating the profile consumption for vertical surfaces, only the overlap between the corrugated sheets should be taken into account. At the same time, for vertical installation of corrugated board, the overlap between profile rows can be 2 times less.
When ordering materials for roofing, facade or fence, it is best to immediately purchase special fasteners for corrugated board, the consumption of which is approximately 6-8 pieces per 1 m2 of surface.
How to correctly calculate the corrugated board on the roof
Decking is a cold-rolled galvanized corrugated steel sheet. All those who decide to build the roof of their house on their own need to know how to calculate the corrugated roof for the roof.
The advantages of corrugated board include low cost, light weight, ease of construction, durability.
Consumers appreciated the positive qualities of this material.
The profiled sheet enjoys unflagging popularity.
Its advantages include:
- low cost;
- light weight (due to this, installation requires little labor);
- ease of construction;
- high performance;
- durability.
Modern corrugated board is a material with several protective coatings. These layers are represented by polymeric plastic compounds. Due to them, the profiled sheet significantly increases the operational life. He is not afraid of adverse natural and atmospheric influences. Improved heat, hydro, sound insulation characteristics. There is an increase in decorative properties.
A little about corrugated sheets
Having studied the standard marking of metal slate, you can learn a lot about corrugated sheets. In particular, the marking data includes the scope of the corrugated sheet, the height of the wave, which determines the load capacity of the section.
There are three main types of material:
- Wall (C). The wave size varies from 8 to 21 mm. Such a profiled sheet is used as a wall cladding material for non-residential frame objects (warehouses, sheds, garages). Fences and fences are erected from a similar corrugated sheet.
- Universal (NS). This type has additional stiffeners. Walls are lined with such material, they can be structural elements. The height of the corrugations is 20-60 mm.
- Carrier (H). This type is distinguished by increased rigidity, due to which such segments can be used as building frame nodes. It is also used to make fixed formwork for walls and ceilings during concrete work. The wave has a height of 57-115 mm.
On the size of the waves on metal profile sections
As practice shows, roofing works are carried out using profiled sheets, in which the wave height starts from 3.5 cm (HC35 grades and higher). Large capital roofs are made from profiled sheets of brand H. In individual housing construction, the HC35-44 grades are used. A large corrugation height is desirable where there are large snows and strong winds.
Sheet metal options.
The width of profiled sheets is common and useful. The second values are taken into account when the vertical overlap of the sheets is calculated. Thus, the width of a single metal corrugated wave is indicated. On modern profile sections, the extreme waves have a special shape, due to which it becomes much more convenient to cover the roof of the house.
For example, if the corrugated sheet is marked HC44-1000, then the width of the corrugated sheet is 1000.
Metal profile sheets vary in thickness from 0.36 to 1.2 mm. Its value determines the strength and bearing characteristics of the material. Based on these data, the mass is calculated, as well as the cost of one section. Therefore, these values must be taken into account when choosing a material. Sheets that are thinner than 0.45 mm belong to the economy class. For roofing, the thickness of the sheet should vary between 0.45-0.5 mm.
What should be the angle of inclination of metal slate roofs
This parameter is extremely important when calculating the power triangle. Sloping low roofs are mainly pressed by the snow on them. If the slope exceeds 60º, then the snow has no effect on the roof. When the angle value is in the range of 25-60º, the snow load is calculated as 70% of the maximum values. Significant wind loads act on a steeper roof. If the steepness of the roof increases from 15 to 60º, then the strength of the gusts increases by 5 times. Metal slate roofs, the angle of inclination of which starts from 45º, have low snow retention properties.
Single and double pitched roofs
Scheme of installation of corrugated board on the roof.
If the house has a shed roof on top, then the entire amount of loads falls solely on the rafter system (in contrast to the gable options, where the loads are distributed over both rafter rows). The latter must reliably counteract them. Therefore, the traditionally shed truss system is not very powerful. Similar types of roofs are erected with a slight angle of inclination to one side (usually no more than 30º).
The gable type of roof is represented by several configurations:
- symmetrical/asymmetric. Here, the angles of inclination may vary, the skates can move on different sides of the center;
- multi-level or those where there are longitudinal lights;
- half-hip;
- broken attic.
Houses with gable roofs, as a rule, have attic or attic rooms. To obtain an acceptable height, their slopes can be tilted up to 60º. At the same time, it is necessary to strengthen the truss system in order to compensate for wind loads. As evidenced by many years of building experience, the effects of wind and load are not terrible if a simple gable roof has an angle of inclination, the value of which is in the range from 35 to 50º. This is the norm for roofs of this configuration.
Calculation of the required number of metal slate sheets going to the roof
Table of consumption of corrugated board for roofing.
L \u003d W / cos (arctg (H / W)) + S1 + S2 + 4 cm,
where: H - the height of the ridge from the roofing;
S1 and S2 - the length of the overhangs on both sides. Usually this size varies from 20 to 50 cm.
The desired value (L) is divided by the length of one corrugated sheet. The result is rounded up. In this way, a preliminary number of horizontal rows of roofing can be obtained.
Roofing material is laid with an overlap, the value of which depends on the angle of inclination. So, if its value is less than 15º, then the overlap width reaches 20 cm. When the angle of inclination approaches 30º, the total sector is reduced to 15 cm. At a larger angle, the overlap width becomes 10 cm.
Scheme of fastening corrugated board.
When determining the total length of corrugated used for a vertical row, horizontal overlaps must be taken into account:
Lo = (R ─ 1) * 2 * P + R * Wm,
where R is the total number of horizontal metal profile rows;
P - overlap width;
Wm - width of one corrugated sheet.
When the result obtained is greater than the total length of the corrugated sections obtained in the preliminary calculation, then another shortened row is added. After that, you will have to recalculate everything. Reducing the height of the row by increasing the overlap is undesirable, since the total weight of the roofing material per 1 m2 will increase significantly. Vertical rows are calculated in a similar way.
The calculation of material consumption for a gable symmetrical roof is carried out according to the same scheme for each half. Here the coefficient W is taken twice as small. To calculate a more complex configuration, it is necessary to divide the roof into its constituent sections. Similar fragments can be triangles, trapezoids. When using special computer programs, the calculation is greatly facilitated.
Additional elements are necessarily calculated - skates, gables, valleys (roof elements with an internal angle necessary to connect two adjacent slopes), snow retainers, plugs. The need for the presence of each node is determined by a specific project.
Instead of a conclusion
Summarizing all of the above, we can state the following: in order for the erected housing to be cozy and warm, you need to correctly calculate the roof. Under such a roof, the inhabitants of the house can live comfortably and happily.
Competently and qualitatively constructed roof, made of metal slate sheets, does not need special care and maintenance. The service life of such material significantly exceeds 50 years.
Decking is a thin-sheet polymer-coated metal material that is popular in modern construction. It is used in open space in the construction of roofs, walls and fences, exposed to wind and precipitation. As a result, it needs reliable fasteners, the role of which self-tapping screws do an excellent job of.
Types of self-tapping screws for corrugated board
Hardware for fastening profiled sheets are diverse and are divided into categories depending on the conditions of use, purpose and design features.
- Self-tapping screws are available for metal and wood. The former are made of high-strength galvanized steel C 1022, have a drill tip and a fine thread pitch, are able to drill a hole in a metal plate 2.5 mm thick. The latter are distinguished by a large thread pitch, they drill metal with a thickness of 1.2 mm.
- The heads of these screws differ in spherical, semicircular, cylindrical and 6-sided, and with different slots. The hexagonal version for a screwdriver with a nozzle is most acceptable. In addition, the heads of roofing screws are painted to match the color of profiled sheets and marked by well-known companies.
- For facing works, hardware with press washers is used. For more demanding tasks, screws with EPDM gaskets are used.
When choosing self-tapping screws, you need to know that they are produced with a diameter of 4.8 to 6.3 mm and a length of 1.9 to 25.0 cm. In addition, the length of the working part of the hardware should exceed the thickness of the fastened materials by 3 mm.
Consumption of hardware
For roofing
The exact number of self-tapping screws for fastening 1 m² of corrugated board is not prescribed in the 1st installation instructions - it must be determined in each specific case, depending on many factors. The desired number depends on the place of application of the material - roof, fence, facade, wall; weather conditions in the construction area - the prevailing wind force and the thickness of the snow cover; operational and geometric characteristics of the profiled sheet; the angle of inclination of the slopes, the pitch of the crate and other parameters.
- the bottom sheets near the cornice to the crate are fixed in each wave;
- adjacent upper and lower profiles in places of overlap of up to 0.2 m are fastened in the same way. Connections between horizontally located products are made with an overlap in the 1st corrugation by means of rivets;
- along the contour of the wind strip, the sheets are fixed to each crossbar of the crate;
- in simple areas, self-tapping screws are screwed in increments of up to 0.5 m through 1 or 2 waves in a checkerboard pattern;
- as the steepness of the slopes increases, the distances between the fasteners decrease.
Example. A profiled sheet with a working width of 1.0 m and a length of 10.0 m is laid on a crate with a crossbar spacing of 0.5 m and placed in the corner of the roof at the same time at the eaves and gable. It is necessary to calculate the number of self-tapping screws for fixing the entire profile, as well as in terms of 1 m².
Top and bottom require 5 each, at the pediment - 8, in the middle - 16 hardware.
Total: 5+5+8+16=34 pcs.
Maximum quantity per 1 m²: 5+3+3=11 pcs, minimum - 3+3+3=9 pcs.
Output: 34 hardware is required for fixing a profiled sheet, from 9 to 11 self-tapping screws are needed per 1 m² of roofing.
Since the roof mainly consists of simple sections, it is generally accepted that 8.9 fasteners are required to fix 1 m² of profiled sheet. Knowing the total area of the roof, it is easy to calculate the number of screws needed to cover the roof with corrugated board.
For the construction of a fence and wall cladding
When building a fence up to 2.0 m high, 6 or 9 hardware for metal (rarely for wood) are usually used per linear meter, depending on the number of lags - 2 or 3, respectively. Fastening is necessarily carried out in places of overlap, in addition, in areas with high wind loads, fixing from below can be done in each wave. If necessary, additional reinforcement of the structure, rivets are used. Hence: for fixing 1 m² of profiled sheet for the fence, from 3 + 3 = 6 to 3 + 5 = 8 self-tapping screws are used. The total number of hardware is calculated based on the length of the fence.
When using corrugated board as a facing material, the consumption of screws is determined taking into account the following information:
- a sheet of 2.0 m is attached in 3 rows;
- self-tapping screws are fixed through the corrugation in a checkerboard pattern;
- in regions with strong winds, fastenings can be carried out in each arc.
The number of fasteners per 1 m² in this case is at least 6 pcs.
When constructing a garage or other outbuildings from a profiled sheet, self-tapping screws are fixed in each wave with a vertical step of 1.0 m. Consumption per square meter is approximately 10 pcs.
Regardless of the place of application, it is ultimately beneficial to fasten the corrugated board with high-quality self-tapping screws, and since they are not cheap, the calculation of the number of hardware must be approached seriously and responsibly. If you need help, use our profile sheet calculator or give us a call!
