Installation skylights– a very responsible process.

Currently, construction has become widespread attic floors. This allows you to effectively use the attic space, adding to the building usable area. Set up in attics living rooms, bedrooms, offices and even rooms for children, so such rooms need access natural light. Attic occupying large area, often poorly lit by a pediment window. In this case, it is necessary to install skylights into the finished roof of the building. According to experts, a roof window, due to its inclined design, provides 30-40% more illumination than a conventional vertical one . Installing a roof window is a very important issue. After all, no one wants leaks or cracks in their home that are blown in by cold air. Maintaining tightness is the primary task when constructing window openings in the roof. The best option use the services of specialists. But if you want to do everything yourself, then try to follow the recommendations and strictly adhere to the technology.

We start by choosing the type of window opening

Dormer windows should complement the building's exterior.

Design solution for the installation of translucent structures should be taken at the stage of creating a project and building a building. If you don't take into account dormer windows, which rather serve for ventilation, roof windows can be divided into:

The material from which translucent structures are made may vary. It can be wood, aluminum, or plastic (PVC). Wooden ones are recommended for offices, living rooms, and bedrooms. And plastic would be better suited for rooms with high humidity– bathrooms and toilets.

When equipping an attic for a bathroom, you need to pay special attention to the insulation and insulation of windows.

There is also a classification based on the shape and design features of roof windows:

Advice! When choosing the design of roof windows, you need to start from design features roof, ease of use and attic size. So installation height window system depends on the slope of the roof and the height of the attic space.

Installation of roof windows in metal tiles has its own characteristics.

Window design

The standard design of a dormer window is a set of elements consisting of a frame, one or two sashes, including double-glazed windows and fittings. It is the fittings that ensure the opening and closing of the window, as well as its fixation in the desired position. In addition, the delivery package should include:

apron hydro- and vapor barriers;
gutter for water drainage;
flashing protecting the frame;
thermal insulation;
slopes installed indoors.

A standard roof window kit is quite easy to install.

Installation Basics

The installation of translucent structures in the attic must be carried out strictly according to the instructions, maintaining quality at every stage. Otherwise, you may end up with leaks and cracks. As a rule, windows are installed in roofs with a slope of at least 15 degrees and no more than 90. Withstanding building codes and taking into account the need to illuminate the attic, the lower edge is mounted at a height of at least 170 cm from the floor. The installation height is affected by the slope of the roof slopes, as well as the size of the window opening.

Depending on the position of the window, you need to choose a design to make it convenient to use.

First important rule– you cannot attach the roof window structure to the roof sheathing. The place of fixation should be exclusively the rafters.
The lower part of the frame should be supported by a transverse beam; if it is missing, it can be supported by sheathing slats or an additional beam can be installed.
A gap of three centimeters should be maintained on all sides between window frame and roof rafters. This will allow the window frame to be leveled after installation.
The window frame is installed above the tiles, and in cases with roofing covering having a high profile, the recommended distance between the roof and the lower end of the window structure is maintained.
To prevent condensation from forming, icing and fogging of the glass, it is recommended to install a heating device underneath.
If you want to achieve complete tightness, do not use foam; only sealants specially designed for this will help achieve the desired result.

Installation sequence

The delivery package for roof windows must include instructions for installing this product. Should be strictly observed this manual, since translucent structures have differences. Differences may be in the mounting brackets, their shape, and location of attachment. For example, the installation of window structures from companies such as Velux, Fakro, Roto has general similarities, but at the same time has fundamental differences in details and elements. Thus, the Fakro company produces window systems with marks marked on the frame, by which you can determine the recommended installation depth of the structure. Installation of a roof window from the Fakro company https://www.youtube.com/watch?v=bF2g30u8Gu0 Installation of a roof window from the Velux company https://www.youtube.com/watch?v=0ZkylA7ejfc

Advice! Before installation begins, the window sashes must be removed. The technology is described in the installation instructions included with the kit. If a translucent structure is supplied with an installed flashing, it must also be dismantled.

Frame installation

The installation of roof windows begins with the installation of the flashing from the bottom edge of the opening to the top. First of all, the finished corrugated apron is installed in the lower part, followed by the side elements of the flashing and the upper part. The last to be installed are the overlays. window design.

This installation step is extremely important.

We strictly maintain the gaps between the window frame and the roof covering. This will make it possible to level the entire finished structure after installation. Recommended clearances:

At the bottom of the window frame:

non-profile roofing 1-4 centimeters;
low profile – 10 cm;
high profile – 12 cm;

Side gaps – 4-6 cm.
The upper gap is 7-15 cm.

Next, align the lower edge of the frame horizontally using a level and secure the mounting corners with screws. We do not tighten the screws all the way so that we can align the frame to the dimensions indicated above. We perform waterproofing - the material should be laid so that it overlaps side part frames We start from the bottom and fit the waterproofing to the frame with an overlap. All overlapping joints of the insulator are secured with screws.

Poorly done waterproofing can be very expensive.

We set the salary

Installation of the flashing should also begin from the bottom; it is fixed to the roof with a window trim and self-tapping screws in the holes made. The side elements are fixed in the lower frame and attached to the window frame with nails. The top flashing is secured from the side with screws and secured with clamps to the roof sheathing. On soft or non-profile roofing, the side parts of the flashing are laid using bituminous materials. The profile covering of the roof should be placed on the sides of the flashing, retreating 5-10 cm. The joints of the flashing with the roof must be sealed with sealants or special tape. Installation of the salary https://www.youtube.com/watch?v=HG0XvblS16Y

Warming and insulation

If the attic window does not have an opening function, then after fixing the frame, a double-glazed window should be installed. If we are dealing with an opening window, then we hang the sash. Next, you should pay attention to insulation and thorough waterproofing and vapor barrier. We isolate the window with inside, tucking the insulating material along the entire length of the frame. WITH outside should be covered with foil or similar material to avoid the formation of condensation. We also lay the slopes with insulation.

Window insulation is especially important for cold regions.

On top insulation material a moisture-proof vapor barrier is laid, this design is attached directly to the window with latches. If the insulating apron does not fit tightly, it should be further reinforced with screws or glue. If the window design provides for a water barrier, it is necessary to install a drainage gutter so that the water drains into in the right place under the window.

The final stage

Once again we check the tight fit of all elements of the flashing and, if necessary, additionally fasten it to the frame and sheathing. Finally, special elements are attached to the top of the flashing, the roofing material is tightly laid, and the joints are checked. In general, the installation of the window system in the attic is complete, you can hang the sashes, check the opening and closing mechanism (if the window is not blind) and remove protective film. In conclusion, we remind you about practical advice specialists - installation internal slopes. The upper horizontal and lower vertical slopes will help improve circulation warm air from heating devices, which will protect the glass from fogging.

Experts recommend using branded slopes according to the window model.

Ksenia Skvortsova. Chief Editor. Author.
Planning and distribution of responsibilities in the content production team, working with texts.
Education: Kharkov State Academy Cultures, specialty “Culturologist. Teacher of history and cultural theory." Experience in copywriting: From 2010 to present. Editor: since 2016.

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The cost of installing a roof window

Title of works	Cost, rub
Installation of a dormer window with a frame in an unfinished roof	2 800
Installation of a roof window with a frame in a finished roof made of metal tiles, corrugated sheets	3 700
Installation of a roof window with a frame in a finished roof made of natural, flexible tiles	4 500
Installation of a dormer window with a frame in a finished seam roof	8 000
Insulation and vapor barrier of slopes	700
Additional payment for installing a window larger than 78*140	700
Dismantling the lining	700
Removing drywall	1000
Additional payment for installing a window at a height of more than 2 m from the floor level	700
Changing the inter-rafter distance with a rafter thickness of 50mm	700
Changing the inter-rafter distance with a rafter thickness of 100mm	1 100
Window dismantling	1 500
Installation of Velux slopes	from 3 000
Installation of mosquito net	2 500
Curtain installation	1000
Installation of electrical equipment (drive, control unit)	2 500
Installation of roller shutters	3 000
Installation of awning	1000
Installation of blinds	1000
Markup for work costing less than RUR 8,000.	500
Markup for work costing less than 12,000 when the facility is located more than 50 km from the Moscow Ring Road	700

Note
1. The price does not include materials for roofing work (lumber, corners, etc.)
2. The cost of work does not include installation of slopes, connection of electrical equipment to the network
3. The bottom of the windows is at a height of up to 2 m from the floor level; metal tile profile – not “Spanish dune”
4. Dismantling interior decoration carried out without guarantees on the quality of dismantling
5. The cost of work may be changed if additional complexity is identified.

Many owners country houses They are trying to turn the attic into a full-fledged living space. One of the requirements for such premises is access fresh air, as well as the proper level of illumination. Installing a window in the roof can solve both problems at once. This solution is very popular today and most often owners prefer to hire third-party contractors for this task, although this can be done independently. So, how to install a roof window?

Installation of roof windows

The delivery package most often includes the following components:

awning or roller shutters for external shading;
salary for protection from negative atmospheric influences;
the window itself is a closed hermetically sealed system;
waterproofing sealant;
internal slopes.

The standard set of attic windows includes a double-glazed window, frame, frame, slopes, fittings

Of course, you can also find more modest sets on sale, but it is recommended to choose the option with built-in curtains. Due to the fact that the structure itself will be located at an angle, classical means of darkening may not be effective.

Planning and calculations

Installing a roof window into a finished roof should begin with the planning stage. First of all, you will need to calculate the required dimensions. The formula for calculation is quite simple: 1 square meter of glazing for every 10 square meters premises.

It is also necessary to choose the correct height at which the windows will be installed. The location of the skylights should be selected in such a way that the lower part of the frame rises 1-1.5 meters above the floor level.

The lower part of the frame should be 1-1.5 m above the floor level

Choosing a location for installing a roof window in a metal tile or soft roof and dimensions should be done in such a way that, if possible, they do not affect during installation rafter system. The dimensions should allow the window frame to be mounted between the rafters and leave a margin of about 10 cm.

Work plan and tools

Whether it is installing a roof window in a soft roof or a metal tile, for any option, the installation instructions are as follows:

preparing the opening;
frame installation;
heat and waterproofing;
preparation of the drainage system;
installation of flashing parts;
installation of double-glazed windows;
interior finishing, including installation of slopes and vapor barrier.

Installing roof windows with your own hands is quite a feasible task, but without suitable tool the master will not be able to do without:

screwdriver and screws;
wooden slats and beams;
level;
nails;
materials for heat and waterproofing.

Window installation

Once the location for installing the skylights has been selected, the planned work site should be marked out in advance. Following the outline, several holes are made in the material for unloading materials. roofing pie– this will help avoid damaging them in the process. Cut the opening using a circulation or band saw. It is important to cut diagonally, and not along the contour, then cut off the vertices of the resulting triangles and only after that form an opening.

The opening in the roof is formed using a circular saw.

Separately, it should be noted the work with roofing material. Installation of roof windows in metal tiles is carried out in the same way as in the case of corrugated sheets or sheet iron. If we're talking about about skylights in a seam roof or similar materials, the casing will first need to be disassembled.

Frame installation and adjustment

Important: for safety reasons, frames are mounted without glass. It can only be installed on final stages.

It is recommended to install the frame without glass

When installing a frame for roof windows, you should immediately carefully fasten the lower brackets, but you should not tighten the fastening of the upper ones to the end - this will then help you adjust the sash more easily. This is done using a level. If any deviations in the inserted window are found, they should be eliminated using plastic corners - these spare parts are often included in the delivery kit. It is also recommended to briefly insert the glass into the frame to check the quality of the installation. Once the adjustment is completed, tighten the screws.

Insulation and drainage

After the fasteners are securely wrapped, thermal and waterproofing material will need to be laid around the frame for greater tightness. The waterproofing apron is fixed using a stapler.

Waterproofing is fixed using a stapler

The drainage gutter is made at the top of the frame. Two pieces are cut out of the sheathing directly above the opening to fit the size of the drainage gutter. A cut of the same size is prepared waterproofing material. The gutter is inserted under the cuttings of waterproofing and attached to the sheathing. It must be installed at an angle, otherwise sealing will suffer - rainwater can go out the window.

Today, two main types of flashing are used for different rebates. The first is used to work with flat roofing material, the second - with wavy ones. Companies involved in the production of skylights include the frame in the delivery package. The principle of working with both types is identical.

The window frame is included in the delivery of the structure, and installation rules are described in the manufacturer’s instructions

The first step is to attach the lower part of the dormer window frame. It should be installed in such a way that the waterproofing apron extends both beyond the frame itself and beyond the roofing sheets. Then you should move on to the side components. The edges of these elements must be laid on the frame itself.

The window frame is attached to the sheathing and frame

The seal is laid along the outer part of the frame. Most often, it, fasteners and all other components are included in the package, but in some cases they will have to be purchased later. In any case, after these steps, you should carefully check everything for accuracy and strength, because Replacing or repairing roof windows, if necessary, will cause a lot of trouble.

Installation of double-glazed windows and interior finishing

At the next stage of installing roof windows, you will need to return the double-glazed window to the frame. This is done quite simply, but the technology depends on the manufacturer, so the process itself is comprehensively described in the manual.

The glass unit is mounted on the last stage, finishing is chosen to match the interior

Also, the interior decoration of the skylights should not cause problems - it all depends on personal preferences. In addition, many manufacturers also add special cladding solutions to the set of roof windows. Most often, the kit includes sealant, a miter box and a template. Such templates are equally good at installing and removing, if necessary.

As alternative option You can use regular drywall, but mechanical installation structures in this case you should refuse.

Features of attic window insulation

Separate mention should be made about working with insulation on the roof. Very often, improper insulation of roof windows results in many problems with its operation. Many inexperienced builders prefer to use conventional insulation. polyurethane foam. This should not be done: expansion of the material can lead to distortions and problems with insulation. The right technology During installation, we recommend using materials in the form of stone wool mats with a long service life.

For thermal insulation of a roof window, it is best to use stone wool

As additional measure It is highly recommended to install heating devices under the attic window. The flow of warm air is equally successful and window slopes warms up and protects from condensation. Metal elements You should not use them for installing insulation - they can form cold bridges.

This is all you need to know about installing a roof window in a soft roof or tile. Despite the apparent complexity, the process itself is quite simple and requires not so much skill as time.

Those who decide to rebuild the attic above the bathhouse into a full-fledged living space will need to do everything to ensure that fresh air flows freely and sunlight. This problem can be solved by roof windows, the installation of which is somewhat different from the installation of simple windows. In this article we will talk about how to install a roof window, and also describe in detail the entire technology.

If the owner decides to install roof windows in the slopes, the resulting structure should form a multi-layer roofing system. You will need to not only secure the window very securely, but also do everything possible so as not to change specifications roofs. Therefore, all work must be performed with maximum skill and accuracy.

Requirements for roof windows

A properly made roofing pie perfectly retains heat, condensation does not collect on it, and it also lasts a long time thanks to its high-quality organized ventilation. The same requirements apply to skylights, which, among other things, must be easy to open and close. They, just like the roof, must be able to withstand any weather conditions.

In this regard, the installed roof windows must meet the following requirements:

mandatory presence tempered glass or it should be a triplex system;
they must have an energy-saving function and at the same time transmit excellent light flux;
equipped with a durable frame that allows constant protection from ultraviolet radiation;
Shading should be possible, ease of maintenance should be ensured, and summer and winter ventilation and a barrier against insects and dust are highly desirable.

So that the money is not wasted, before starting all the work, it is recommended to carry out all the calculations so that the choice of window is made according to the needs. It must match the roof covering and be in the correct position.

Window area

Making calculations is very simple; the final data will depend on the floor area. For every 10 m2 of base, 1 m2 of glazing should be provided, without taking into account the size of the window. It is worth considering the fact that the higher the window is located, the more light it can let in. However, this approach may interfere with those who like to look at the surrounding nature for a long time, so this installation of dormer windows in a finished roof is more acceptable for roofs with small slopes - within 15-20º.

In roofs with steep slopes, the installation of a roof window in a soft roof is carried out in such a way that its lower border is located at a height of 100 to 140 cm. The extremely low value in in this case can reach 80 cm, and the maximum is 190 centimeters. However, the placement height has almost no effect on the dimensions of the roof windows. Be that as it may, the total glazing area should be determined according to the proposed formula, and it does not matter how many windows the owner of the house wants to install.

Which window is better to choose for the attic?

On the market at the moment you can find many varieties of dormer windows in design and functional features. They differ not only in size, but also in how they function, location rotary mechanism and pens. Regarding the window handle, the height of its installation will affect the installation height of the window itself.

If you install the handle very high, the window will be inconvenient to open and close, unless, of course, it has a remote control function. And if you place it too low, it can be dangerous for children relaxing in the attic. The choice of roof window will also be affected by the type of roof covering installed. The height of the external window frame will be greater, the higher the relief roofing material. Some window manufacturers mark their products with data indicating the roofing materials with which the windows are preferable to be installed.

Keep track of what configuration the windows are sold with. It is necessary that all fasteners are present in them, mounting angles, moisture-proofing apron, as well as sealant and adhesive tape.

It is worth noting that if the kit does not include a drainage gutter, it is advisable to make it yourself, for example, from a piece of waterproofing material folded in half.

Determining the location of installation of roof windows

It is very important that the installation of a window in the attic roof is carried out in right place Thus, it will be possible to extend the service life of the entire roof as much as possible.

When deciding on the installation location, keep in mind that you should not do this in the following places:

on the slopes of the valley, since moisture and other precipitation will collect in its corners;
near ventilation ducts, chimneys, because condensation often occurs in such places;
close to horizontal walls where precipitation collects and there is a high probability of shading.

There are no strict technical standards for the location of roof windows, so when choosing them, be guided by the following recommendations:

The most important thing is the type of roofing. Rolled roofing material can be easily cut in the place of interest to us. For ceramic tiles this approach will not work. The window will need to be placed so that its lower part rests on top of a row of intact tiles. If this cannot be done, the tiles will need to be disassembled, and after installing the window, the fitted parts of the material will need to be laid on top of the window frame.
The pitch of the rafters is also considered important. Ideally, the design of the rafter system should remain unchanged. Try to buy windows with dimensions that allow you to easily install them between two adjacent rafters, while leaving a margin of 7-10 cm. An additional gap is needed for subsequent installation of thermal insulation. If the gaps between the rafters are too small to install a large window, it is better to buy two or three smaller windows and install them side by side.
It is worth noting that if it is necessary to remove a small section of rafters for the subsequent installation of a window, an additional horizontal beam is installed in the opening for it in order to strengthen the rafter system.
You need to pay attention to whether the handle is attached at the top of the window or at the bottom. In the first case, roof windows are mounted at a height not exceeding 110 cm, and in the second case - up to 170 cm

When deciding where and how to install a roof window in a finished roof, you need to consider installation under the window heating device Thus, it will be possible to exclude the occurrence of condensation.

The sequence of installing a window on an attic roof

Work on installing a window in the attic consists of the following steps:

an opening is made under the mounted window;
install the frame in advance removed glass unit;
install insulation and moisture insulation;
installing a gutter on top of the window frame;
fixing salary elements;
installation of double-glazed windows;
Carrying out interior finishing, including installation of vapor barrier and creation of slopes.

As a rule, all manufacturers of roof windows apply full instructions, according to which you can do all the work yourself. There are a number of nuances, taking into account which the installation of windows will be carried out as efficiently as possible.

We make an opening in the roof according to the rules

The opening structure must comply with the following rules:

Due to the fact that thermal insulation will need to be laid along the entire perimeter of the frame opening, you will need to leave a gap of 2-3.5 cm. This value depends on the thickness and density of the insulating material.
Technological gap must be provided between the bottom of the window and the roofing. The gap is determined based on the type of roofing material. If this is a tile, then the indentation in this case will be 9 cm.
A gap of 4-10 cm should be left between the roofing and the top mounting beam. In this case, the gaps are necessary to prevent the window from skewing as a result of possible shrinkage of the rafter system.
The window frame will be fixed to rafters or slats fixed at the same level horizontally. The slats are made from timber with a cross-section similar to the lathing.
From the inside, an outline is drawn along the moisture-repellent material or finishing according to predetermined distances.
Pieces of waterproofing material are cut around the perimeter of the window in such a way that a so-called “envelope” is obtained, that is, overlaps of 20-25 cm must be provided. Subsequently, they will need to be turned outward, fixed with a stapler to the frame or sheathing, and the excess parts can be removed. A moisture-repellent apron will be placed on them in the upper part so that the insulation shell becomes completely airtight.

How to properly install a window frame

Manufacturers' recommendations require mounting brackets to be secured to the frame. For example, the manufacturer Fakro recommends removing the double-glazed window before installing the brackets, and the manufacturer Velux advises removing it after installing the brackets.

It is best to lay and fix thermal insulation on top and bottom of the window with a stapler before installing the frame in the opening.

Frame installation and adjustment

Installation and adjustment of the frame is carried out in the following sequence:

The lower brackets are secured tightly, and the upper ones are only partially tightened so that adjustments can be made in the future.
At the next stage, the frame is aligned vertically and horizontally, and if any deviations are found, adjustments are made using plastic corners. It is recommended to temporarily install the sash in place to be able to control its correct fit to the frame. It is better to check the accuracy of the frame installation now, since this will not be possible later.
The distances from the opening to the frame on both sides should be the same.
When the adjustment is completed, all the bolts can be tightened completely, a moisture-repellent apron can be laid around the perimeter of the frame, and the insulating material can be secured on all sides using a stapler.

To install a drainage gutter, cuts are made in the sheathing above the window with dimensions equal to the parameters drainage device. According to these dimensions, a piece of moisture-proofing material is cut. The gutters are threaded through the removed part of the waterproofing and fixed to the sheathing. It is worth noting that the drain should be placed at an angle so that moisture does not collect, but flows by gravity into the ventilation gap of the roof.

Finishing work on the installation of roof windows

It is also worth remembering that the installation of the flashing must strictly comply with the manufacturer’s recommendations. Follow the rule - always start fastening the bottom element first, while threading all the flashing units through the flexible insulation. Then the frame is installed back, a vapor barrier is laid from the inside and slopes are made.

So we figured out the question of how to install a window in mansard roof. All the nuances were given, knowledge of which will help prevent mistakes during the installation process. Ideally, you need to adhere to all recommendations, regardless of the design features of the purchased windows. Take into account the technology for their installation and then you can do all the operations yourself.

In a private house, the attic is another room. To turn attic space In a full-fledged residential building, it is necessary to install windows. It is better to do this immediately at the stage of roof construction.

Installing a roof window in a finished soft roof is more difficult: for installation you will have to cut out large plot covering, backing plywood, roofing pie and even rafters, if they are installed at small intervals.

The technology for installing a roof window in a soft roof depends primarily on the design of the windows themselves. Manufacturers have different installation requirements. For example, Velux models can only be attached to rafter legs, and FAKRO and ROTO are often attached to the sheathing.

Let's consider general rules installation

Scheme and choice of model for installing a roof window in a soft roof

When choosing a model and determining required quantity windows are based on the calculation of 1 square meter of translucent structure per ten square meters of attic area. It is recommended to draw up a window placement plan in advance.

for steep roofs, the window is installed so that its lower cut is located at a height of one to 1.4 meters;

if the slope is within twenty degrees, you can place the window higher - the illumination will be better;

The minimum installation height is 80 centimeters, the maximum is ninety meters.

The height is also affected by the design of the block itself. More precisely, the location of the handle:

if the handle is on top, the window is placed no more than 1.1 m from the floor;
if in the middle - 1.2-1.4 meters;
When the handle is in the lower position, if there are children in the house, you cannot place the window low. Not less than 1.3 meters.

The window is installed between the rafter legs. The width of the model is selected so that there is about two centimeters between the frame and the rafters on both sides. Insulation will be located around the perimeter of the frame; the width of the gaps between the frame and the rafters depends on its thickness.

Our works

Installation procedure

1. If the roof is already ready, you need to cut an opening in it for window box. The opening is made along the cut of the rafters: between the edge and the frame the same gap is left as between the frame and the rafters. This is how all materials are cut with the exception of the waterproofing layer: you need to leave an extra 20-25 centimeters of film for overlap.

2. If the ceiling is lined with plasterboard or clapboard from the inside, it will be difficult to determine the location of the opening. It is recommended to have a rafter layout diagram on hand, otherwise you will have to dismantle some of the panels. Before cutting out the entire opening in drywall along the contour, you should make several through holes to relieve tension.

3. Transverse bars are nailed to the rafters at the top and bottom of the opening. Their installation is required if installing a window requires removing a section of rafters. If not, it is still recommended to nail the bars: this will hold the window stronger.

4. On top of the finished opening under slight slope install a drainage pipe/gutter to drain condensate and attach it to the sheathing. The length of the gutter is equal to the width of the opening. The slope is necessary so that the water does not stagnate, but spontaneously flows into the ventilation gap of the roof.

5. Remove the sash from the window. If the window is blind, remove the glass unit.

6. Attach the box to the rafters and cross beams with angle brackets. One shelf is screwed with self-tapping screws to wooden element, second – to window frame. The lower edge is fastened tightly; the screws on the upper edge are not fully tightened.

7. Adjust the structure according to the level. Serious distortions are corrected plastic corners. It is recommended to return the sash to ensure proper fit. After adjustment, the sash is removed again and the fasteners are tightened.

8. Place waterproofing and insulation around the window. The edges of the waterproofing apron are placed on one side under the waterproofing layer of the roof itself, and on the other - under the condensate gutter. The edges of the roof waterproofing are fixed to the frame. Fastening with galvanized nails.

9. Cover the installation seams with flashing strips from the window kit. Place the bottom part first, then the rest. All strips must be placed under an elastic seal.

10. From the inside, the cracks along the perimeter of the frame are sealed with heat-insulating or sealing material, a vapor barrier is laid and the slopes are treated. The lower slope should be horizontal, the upper slope should be vertical.

11. Return the sash to its place.

You can slightly change the installation sequence: first sheathe the opening thermal insulation material, and then install the frame. The insulation strips are attached to the rafters and beams with a stapler.

Installing roof windows on a soft roof is an energy-intensive task and requires high precision.

Poor installation of an inclined window on the roof will result in the attic being constantly flooded with rain, and condensation, rain and snow moisture will begin to accumulate under the roofing. All this will accelerate the wear and tear of the roof and the entire house.

Contact us at STM-Stroy: our experience roofing works For more than fifteen years, we will install roof windows for you quickly, inexpensively and in full compliance with technology.