How to glue vapor barrier to PVC windows? Tapes for windows: review, description Vapor barrier tape for plastic windows: how to glue

Joints and seams of any structure are the most vulnerable places. The same can be said about windows installed in a window opening. It is the installation seam that will be the weakest point in the entire structure. A poorly laid seam can allow heat to escape, moisture to enter and extraneous sounds from the street, finally, condensation, which forms due to temperature differences, will accumulate inside the insulation and deteriorate its characteristics, leading to destruction. The description of the characteristics of the assembly seam and the technology of its installation is given special attention in GOST. At the moment, GOST 30971-2012 is in force.

Features of the technology. Why do you need a vapor barrier tape?

According to GOST, the installation seam must be three-layer. Each layer performs its own function:

The middle layer - the main one - provides heat and sound insulation due to its porous structure.
The outer layer protects from moisture coming from the street (it removes it) and from UV rays.
The inner layer is a vapor barrier. Essentially, it traps heat in the house and prevents steam from accumulating in internal space premises, penetrate into the insulating layer.

Thus, compliance with the seam construction technology is necessary to prevent moisture penetration, condensation formation, and improve heat and sound insulation properties. Refusal to install insulating layers will reduce the cost of installation and construction by about 15-20%, in general, but GOST does not allow such cases.

Classification of vapor barriers for windows

To install a PVC window, vapor barrier tape in a wide variety of varieties and diffusion vapor-permeable tape are used.

Tapes can have one or two adhesive surfaces. The first ones are installed on the frame itself, the second ones can be installed in the window opening, gluing them to the wall and to window profile. The range is divided into winter and summer options. Summer ones are intended for installation at temperatures from +5 degrees to +35 degrees, winter ones - for installation at temperatures of +5 degrees and below. Moreover, when installing in winter, it is necessary to warm up the surface of the window opening.

The tape should be approximately 5 cm larger than the width of the mounting seam.

Based on the material used, there are two types of tapes:

Butyl rubber tape with a reinforcing layer of non-woven fabric, designed for sealing joints.
Metallized tape intended for installation in wet areas.

Types of tapes

The functionality of the tapes is different, so when installing windows they use different varieties depending on the goals at each specific stage. A review of the tapes should be carried out.

	Material of manufacture	Where is it used?	Properties	Peculiarities
PSUL	Polyurethane	Used when organizing a ventilated assembly seam from the outside. Allows high-quality sealing of joints. Acts as a sound insulator when glued to the lower surface of the ebb.	Provides a tight fit of the frame to the wall.	It is necessary to unwind the tape (it is supplied rolled into rollers) immediately before installation. Over time, it expands and loses its sealing properties. The width of the PSUL tape must exceed the width installation gap.
	Non-woven material. BC+ – foil.	Used during installation internal slopes. Combines with plastic, plasterboard, protects against condensation.	Prevents moisture from the insulation used to insulate slopes, in particular mineral wool. BC+ has a double-sided adhesive layer. Is an effective vapor and heat insulation	There is an adhesive layer across the entire width. BC+ is thicker than BC.
	Non-woven material. VM+ – foil.	Used when finishing internal slopes, but under plaster.	Prevents condensation from penetrating into mineral wool insulation. VM+ has an adhesive layer on both sides.	Provides adhesion to plaster. VM+ is more resistant to moisture.
	It is made of foamed polyethylene, which is laminated on one side with a metallized film. On the other side there is an adhesive layer applied.		Combines the properties of several tapes. It has increased elasticity, mechanical strength and resistance to aggressive chemicals.	May not adhere well to gas and foam concrete.
	A thicker layer of foamed polyethylene is used than GPL. Metallized layer based on polyurethane film.	Universal tape. Used for heat, hydro and vapor barrier.	The difference from GPL tape is that there is an additional adhesive strip on the metallized film side. The tape has the best thermal insulation characteristics. Effectively reflects heat.	Quite voluminous, which is inconvenient when finishing slopes.
Diffusion tape	Polyester fabric with self-adhesive strips based on butyl rubber.	Used to seal the installation seam on the ebb side.	It is vapor permeable from the inside and has waterproofing properties from the outside.	Resistant to UV rays.
Butyl rubber mounting tape	Butyl rubber	Installed between the window sill and insulation.	Protects against blowing.	There is a self-adhesive layer.

Installation procedure for vapor barrier tape

The vapor barrier tape is installed after completing the preparatory procedures: dismantling the old window, cleaning the opening from debris, dust, sealing and leveling large irregularities.

The window opening is wiped with a dry cloth and pre-installed window design. In the process, the future location of the PSUL vapor barrier tape is marked.
The window is removed from the window opening and a vapor barrier tape is glued to the frame with a distance of 5 mm from the markings. In the corners, the tape is glued end-to-end, for which the tape is initially cut off with an allowance that will be used for fitting. The surface must be degreased and dust free.
Tape for slopes is glued to the side profiles and the top. leave an overlap of about 10 cm.
Install a window. Foam the seam.
The installation seam is covered from the outside with diffusion tape.
Before installing the ebb, PSUL is glued lengthwise to its lower surface.
A metallized vapor barrier tape is attached to the seam at the bottom of the window on the inside.
The tape on the window sill is glued last.

High-quality glazing requires serious consideration and is impossible without proper insulation of the gap between the opening and the window. Often, organizations that install translucent structures limit themselves to traditional polyurethane foam, which is subsequently covered with plaster or other finishing materials. This approach has proven itself relatively well and in some cases does not cause any complaints from the consumer throughout the entire service life of the window.

However, glazing with one level of sealing of the opening does not meet the state requirements for the quality of services or goods provided, that is, GOST. To comply with these requirements, additional insulation is required at the junction of the window and the opening both from the street side and from the room side. Such insulation is ensured using special mounting tapes.

Scheme for using mounting tapes on windows

View from above

Mounting tape for windows is a self-adhesive material on a polymer or fabric basis, designed for additional sealing of window or door openings.

Types of mounting tapes for windows

The functions performed by the tapes are different and depend on the location of gluing, the condition of the opening, the features of the future finishing of the slopes, as well as the requirements for the window block. Next, we will consider the most commonly used materials common in the modern construction market.

PSUL

Pre-compressed sealing tape is used primarily on the outside of translucent structures. Its main purpose is to ensure unimpeded drainage of moisture from the area where the hatch connects to the opening.

Essentially, this is a tape product made of elastic polyurethane foam (looks like foam rubber), usually gray or black. One side of the material is covered with an adhesive composition, insulated with a protective film. The tape is supplied twisted into compact reels or rolls (depending on the size), which need to be unwound only during the installation process, since the material loses its quality over time.

An example of tape expansion over time

The main feature is the ability to fill joints as a result of expansion, which occurs as a result of contact with air. The tape seals the gap from moisture and external influences from the outside, while simultaneously allowing excess liquid to evaporate from the inside.

Scope of application of PSUL:

Additional sealing of interfaces between elements of prefabricated structures;
Sealing the gap between the frame and the opening when installing windows and doors;
Insulation of joints between small-sized moving units of building facades;
Filling the external seam between the slope and the frame during the installation of PVC windows.

It is important to understand that to fill the gap efficiently, you need a tape of the appropriate size. For example, if the task is to seal a joint with a maximum width of 40 mm, you will need a PSUL with a nominal size of 45-50 mm.

Water vapor barrier (GPL)

This type of tape product is most popular when installing window blocks. Among its main features it is worth highlighting the following:

Water vapor barrier mounting tape is designed to seal joints on the room side.
The most commonly used self-adhesive material is polyethylene film. On one side the tape is equipped with a foil coating, and on the other - with an adhesive composition.
The adhesive used provides reliable fixation on most surfaces (concrete, brick, cinder block, wood and others). The products of some brands have poor adhesion to foam blocks and aerated concrete, so before purchasing you should consult the seller or read the attached instructions.
The structure of the material prevents the penetration of moisture or air both through the tape itself and through the gluing points. This ensures the maximum possible tightness of the joint of the opening and, as a result, the structure as a whole.
In addition to insulating from moisture, the tape does not deteriorate during prolonged contact with ultraviolet radiation and is not subject to destruction from exposure to aggressive environments (household acids, alkalis and other reagents).

GPL is used for waterproofing installation gaps that arise when installing window and door units, as well as for sealing structures made of metal, wood, concrete and plastic.

GPL-S and insulated GPL

VM (VM+) tape

VM. Vapor barrier tape designed for sealing joints indoors. It is used in cases where wet finishing of slopes is planned (plaster or tiling). Provides protection from moisture entering the joint of the opening and reliable fixation of the finishing coating.
VM+. A modified analogue of the previous product with similar properties. It has the best waterproofing qualities, which allows it to be used in rooms with high humidity (kitchens, showers).

VS (VS+) tape

Diffuse (vapor-permeable waterproofing tape)

It is used outside structures in conjunction with pre-compressed tape or in situations where it is impossible to use the latter. Traditionally, diffuse tape is used to isolate the area where the molding profile is attached, since PSUL cannot be glued to the place where it is fixed, but there are also frequent cases of use along the entire perimeter of the window block.

The structure of the diffuse tape prevents the penetration of moisture and cold air into the assembly joint; in addition, the material protects the polyurethane foam from exposure to solar ultraviolet radiation. In addition to its protective qualities, the tape has the property of allowing vapor formations to pass through from the inside of the joint between the frame and the slope, thus ensuring necessary ventilation this section of the structure.

Butyl rubber tape

Butyl rubber, used as the base of the tape, is a fairly elastic material with high adhesion to most surfaces. It is fixed equally firmly on stone, wood or plastic. It is also worth noting that it is environmentally friendly and almost completely harmless to the consumer. The main disadvantage is the flammability of butyl rubber, which requires compliance with appropriate standards for installation and subsequent operation.

Used as insulating material from the inside of the structure. It is glued to the bottom of the window sill profile as additional protection against blowing from the outside and penetration of steam into the installation seam from the room side.

Installation features

The tape is applied both before fixing the window block in the opening and after installed structures. The first option is more convenient in cases with the installation of external insulation.

Let's consider the application algorithm tape insulation using the example of gluing pre-compressed sealing tape (PSUL) and internal GPL-S with an additional strip of double-sided tape:

It should be remembered that the tape must be selected in accordance with weather conditions. When working in winter, it is possible to glue only material intended for use in low temperature conditions.

September 17, 2016
Specialization: professional in the field of construction and repair (full cycle of finishing works, both internal and external, from sewerage to electrical and finishing works), installation of window structures. Hobbies: see the column "SPECIALIZATION AND SKILLS"

Waterproofing tape for PVC windows, as well as other installation materials, are used relatively rarely: their use increases the cost of work, since a set of high-quality mounting tapes for installing one structure costs approximately 15 - 25% of the cost of the entire window.

And yet, if you plan to glaze the house “for yourself,” use modern materials not only possible, but also necessary. That is why I decided to write a short review on mounting tapes, their purpose and correct use.

Purpose of mounting tapes

If we approach it from a formal point of view, then use special vapor-permeable and vapor barrier materials for PVC installation designs are necessary primarily to meet the requirements of industry standards. The use of tapes is regulated by the following documents:

GOST R 53338-2009 “Vapour-permeable, self-expanding, self-adhesive tapes for construction purposes”;
GOST 30971-2012 “Mounting seams of junctions of window blocks to wall openings. General technical conditions";
GOST R 52749-2007 “Window installation joints with vapor-permeable self-expanding tapes.”

That is, it is basically impossible to install windows according to GOST without using tapes. But there are also rational explanations for the need to use such materials. Some of them are set out in the already mentioned GOSTs, and some can be formulated based on many years of experience in the installation, repair and operation of translucent structures:

To seal the joint between the window and the window opening, self-expanding foam based on liquid polyurethane is used. Despite having a number of objective advantages, foam also has disadvantages - first of all, it is vulnerable to ultraviolet radiation.
To protect the foam from UV radiation, self-adhesive tape is used, which covers the mounting seam from the outside.

The next aspect that justifies the need to use special tapes for installation is ventilation, or more precisely, liquid drainage. When operating the window without additional protection, which is formed in the room, partially collects inside the assembly seam, reducing the efficiency of heat conservation. To avoid this, it can be used to seal it from inside the room. vapor barrier material.
However, it is important not only to protect the foam from moisture, but also to ensure the unimpeded escape of water vapor beyond the assembly seam. For this purpose, exclusively vapor-permeable tape is used for exterior finishing, which guarantees normal diffusion of moist air .

The question of whether it is necessary to glue a vapor barrier tape or use a vapor-permeable material is largely debatable. On the one hand, the efficiency of these materials is really quite high, so their use in installation will clearly affect the functionality of the window in the best possible way.

On the other hand, the price of mounting tapes is also quite high, so to save money you can choose other methods: from the inside, for example, install a slope made of plastic (in principle, it provides good hydro- and vapor barrier), and from the outside, finish the installation seam with vapor-permeable plaster followed by painting .

And yet I repeat: the use of special tapes when installing a window structure into an opening is completely justified both from the point of view of standards and from the point of view of optimizing the indoor climate.

Types of materials

Type 1. Water vapor barrier tape

A variety of tapes are used for installing PVC windows. Each type of such material has its own characteristics and advantages, therefore, to achieve maximum effect materials should be combined, combining them functional benefits the best way.

I’ll start my review of materials used when installing windows with the most popular - water vapor barrier tape:

Self-adhesive water vapor barrier installation tape (GPL) is a tape material that covers the installation gap on the room side.
The basis of the tape is polyethylene or polyethylene foam film. On one side, the plank is laminated with a thin layer of aluminum foil, and on the other, one or two strips of adhesive are applied for installation.
The adhesive mixture used for application provides good adhesion to most materials - wood, concrete, brick, etc. Problems may arise when trying to cover an opening made of gas or foam concrete, so before purchasing installation material, I recommend consulting with the seller or carefully studying what the manufacturer’s instructions say about this .
The structure of the tape ensures almost complete tightness of the finished assembly seam: neither the gluing area nor the polyethylene strip itself allows air and water vapor to pass through.

The polymer structure provides the product with additional advantages: finishing material It is not afraid not only of moisture, but also of acids, alkalis, and other chemically active substances, and also does not degrade under the influence of ultraviolet radiation.

Type 2. Insulated water vapor barrier tape

Insulated tape is, in fact, a modification of a conventional water vapor barrier material. Its key features include:

increased thickness of the base, which is made exclusively from foamed polyethylene;
a denser foil layer based on a durable polypropylene film.

Thanks to these design features:

The product is no worse at preventing the diffusion of liquid and water vapor and the penetration of moisture into the middle part of the assembly seam. This ensures the most effective hydro- and vapor barrier.
The increased thickness of the base and its porous structure help reduce heat loss. Foamed polyethylene acts as window insulation.
Finally, the foil coating also plays an important role. Thin layer metal on an elastic base reflects infrared radiation, performing the function of a “thermal mirror”. In this case, most of the heat generated by heating devices is returned to the room.

The disadvantages of such products would include their rather large dimensions: finishing the installation gap with insulated tapes requires subsequent masking of the junction unit using slopes, which is not always included in our plans.

Type 3. Pre-compressed tape (PSUL)

Another universal material– PSUL (pre-compressed sealing tape). This material is used to ensure self-ventilation of the installation seam:

The tape is a strip of porous polyurethane foam impregnated special composition. On one side, the strip is equipped with an adhesive layer protected by a special protective coating.
The product is supplied in rolled form (rolls or reels). It is necessary to unwind the material immediately before installation, since over time the product loses its properties.
During installation protective covering is removed and the PSUL is glued to the window structure. After this, the impregnation reacts with air, due to which the linear dimensions of the product increase. The tape expands and completely covers the installation gap.

Complete and high-quality overlap is possible only if the nominal size of the product specified by the manufacturer corresponds to the dimensions of the gap. So, for example, if I need to seal a 35 mm gap with my own hands, then for work I take a PSUL about 40 mm wide.

After expansion, the material becomes completely vapor permeable. This ensures unimpeded exit of water from the assembly seam.

Type 4. Inner tapes

In addition to the varieties indicated for interior decoration other products are also used on slopes. It is convenient to analyze their main features using the table, which I will give below:

Marking	Description
Sun	A product that you use for installing window structures if you plan to finish slopes using a dry method (plasterboard, plastic, lining, etc.). Provides effective vapor barrier and prevents moisture from entering the thickness of the assembly joint. The tape is installed using a self-adhesive layer with a protective coating.
VS+	It is used for the same purposes as BC tape, but is thicker. An additional advantage is the presence of a foil layer, which provides more effective vapor and heat insulation.
VM	A hydro- and vapor barrier material, which is used if it is planned to plaster the slopes on the inside of the window opening. We protect polyurethane foam from moisture ingress, while ensuring maximum adhesion to the plaster mass.
VM+	A more effective version of the previous product, used for the same purposes. A key feature is increased resistance to moisture.

Other types of mounting tapes

In addition to the products described above, other types of tapes are used for the installation of translucent structures:

Diffusion tape for exterior finishing. Used in combination with PSUL or polyurethane foam. Provides protection of the assembly seam from moisture and ultraviolet radiation while maintaining vapor permeability. Finishing the junction unit with diffuse material allows you to maintain a natural level of ventilation: air will freely flow out from the middle part of the installation gap.

Butyl rubber mounting tape under the window sill. As the name suggests, it is used to seal the junction under the window sill and protect the insulation from blowing, moisture and heat loss. Like other materials in this category, installation is carried out using a self-adhesive layer.
Non-woven material for installation under low tide. It has high vapor permeability and is glued to the base of the opening under the drainage strip. In addition to providing ventilation, it significantly reduces the noise of galvanized metal flashings, acting as a shock absorber and dampening some of the loud sounds.
Adhesive tape is a universal material that is used for installing lightweight structures. For example, self-adhesive reflective film is popular, and mosquito net with fastening tape is also very convenient to use.

How to use it correctly?

The technology for using installation years when installing PVC profile windows is quite simple. I use the following algorithm:

First I prepare the opening: I remove old design, I level the walls, remove dust and dry all surfaces. It is desirable that the edges of the opening be more or less even, therefore, before installing the window, it may be necessary to refine them using a quickly hardening solution.
Then I cut water vapor barrier tapes, PSUL and diffuse material. I cut the products along the length of each side of the window with an overlap of at least 10 cm (these areas are used to form a corner joint).

I paste the tapes onto the window frame, removing the protective film from one of the adhesive strips. I glue PSUL in a compressed state onto the front surface of the structure from the outside.

It is desirable that the PSUL be completely hidden behind the wall fence, so before gluing, I usually fit the window to the opening, making marks at the installation site.

I install the structure in the opening and fix it using the chosen method - either using anchors or using mounting plates.

I fill all the gaps with self-expanding polyurethane foam.
I remove the protective strips from the inner and outer tape and glue their edges to the opening, completely covering the foam.
If installation is carried out in winter, I use specialized materials with glue that retains adhesive ability at subzero temperatures.

Before installing additional elements, I separately glue to the stand profile or the bottom of the frame a material that protects the space under the window sill and under the drainage strip.
At low tide, I stick a PSUL strip onto a horizontal surface: it acts as a shock absorber, and therefore the metal canopy will not rattle when there are gusts of wind or raindrops hit it.

Cost of materials

As I noted at the very beginning, the high price of mounting tapes partially limits their distribution. But at the same time, if you know exactly what you need, there is a chance to fit within the budget allocated for glazing.

Conclusion

Both vapor-permeable and vapor barrier tape for plastic windows may not be included in the required set of parts for successful installation. But their use allows you to fully comply with GOST requirements. And also ensure the formation of a favorable microclimate in the room - primarily through the normalization of the installation seam.

The video in this article will help you master the technology of using such parts, and when choosing a product, you can consult with me and other experts by asking questions in the comments.

September 17, 2016

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Vapor barrier is required for plastic windows. Vapor barrier tape allows you to close joints, seams, and protect the structure from wind and precipitation. Thanks to this element, cold air will not enter the room through the joints, which will ensure the greatest airtightness of the room and minimal heat loss.

How to install windows correctly?

Modern builders most often use polyurethane foam for installation. M O Installation tape for windows together with sealant is applied after the foam has dried. It is needed in order to protect the material from moisture, as well as close possible cracks and stop the access of cold air to the room. If this condition is neglected, cracks will appear between the window frame and a wall through which cold air will enter the room. Drafts will appear, the windows will sweat a lot and freeze at the joints.

For the stages of window installation and common mistakes when installing them, see the link

When building a private house, you need to think in advance about the height, which ones will be more practical and look better.

Modern builders often use it to install doors and plastic windows. Read on the NBC website advice from professionals on how to choose it

What is vapor barrier used for in plastic structures?

It is worth considering that the more correctly the installation is done, the more reliable the structure will be and will last longer. Even if , but are inserted incorrectly, you will not get the desired effect.

It is necessary to ensure that workers comply with the following conditions:

The inside of the installation gap should be filled with foam that is thicker than the outside.
The system must be three-layer. The first layer on the street side protects the entire pie from weather conditions, the middle layer is responsible for thermal insulation, and the inner layer protects against condensation.

Vapor barrier tape is necessary to protect the structure from water vapor.

To ensure that the vapor barrier does not interfere with plastering, special tapes should be used, over which the room can be finished.

What should you know about sealing?

Most often, windows are fastened using special bolts and: this material simultaneously serves as a reliable fastener, allowing you to adjust the position of the frame before the foam hardens, and as a high-quality insulation. However, sealing for the material is extremely important, since when moisture gets in, the foam begins to deteriorate over time, crumble and turn yellow, which negatively affects its properties.

Window tape works great to protect the foam. Even if you are going to use platbands, which will protect the structure from weather conditions, and can also give the frame decorative look, before installing them it is worth gluing the tape. It will help make the insulation high-quality, while making the work not much more expensive.

The most inexpensive and easiest to install vapor barrier for windows is a special tape, the sticker of which can be applied by anyone.

To protect installation seams in window openings from moisture, use vapor barrier tape. It is made from butyl rubber or aluminum. This material glued to damp mounting foam at the seams, extending the life of the windows.

When installing a window in an opening, remember that its service life is related to how competent the installation is. Even the most quality designs will not be used for a long time if installed incorrectly. Due to improper work, moisture will gradually penetrate the walls, leading to the destruction of building materials and the spread of mold.

Vapor barrier tape

When installing the frame, consider several important points:

On the inside of the room we make a denser layer of the mounting solution (for example, foam).
To ensure high-quality sealing of all gaps, we use three-layer protection - the outer material protects from the effects of precipitation, the middle layer is responsible for thermal insulation, and the coating inner surface- for vapor barrier.

Vapor barrier provides reliable protection a thermal insulation layer against condensation, which is present not only in the bathroom, but also in an ordinary room. In the process of finishing the window slopes, we glue a special tape. The principle of vapor barrier is based on blocking the contact of moisture with polyurethane foam, which forms the middle protective layer. Materials with low elasticity and permeability to water and air are suitable for these purposes. When installing windows, you cannot save on vapor barriers. Such neglect will lead to rapid wear of frames, plaster and finishing materials.

To protect the seam, special vapor barrier tapes are usually used. They come in a coiled and compressed sponge-like material. Absorbing moisture, the material swells, sealing all existing cracks. Vapor barrier tape for plastic windows has a number of advantages:

1. isolates moisture;
2. It is consumed economically, with virtually no waste;
3. does not emit toxic substances;
4. Easy to stick;
5. has a long service life.

2 Classification - what characteristics to pay attention to

Moisture insulation tapes are available with one or two strips of adhesive. The second option allows you to process the window-wall joint more efficiently. The material is classified according to periods of use:

summer (air temperature – 5-40 °C);
winter (temperature below 5 °C).

Depending on the nature of the surface being treated, tapes are produced various sizes, thanks to which you can isolate any seams. When choosing a material, keep in mind that it must exceed the width of the gap by 4.5 cm. For work on the outside of the building, tapes made of foam materials are suitable, which will ensure reliable sealing.

Moisture Insulation Tape

An adhesive finishing material made from butyl rubber is intended for processing window, balcony, door frames and joints between panels. There is a non-woven layer inside it. After gluing, such a strip is primed, plastered, wallpapered or painted. There is a full-butyl vapor barrier tape made using the Robiband system. It provides better processing of the assembly seam.

Metallized vapor barrier material is used for gluing seams with joints in rooms with high humidity air - baths, baths, saunas. A layer of glue over the entire surface in this form greatly simplifies the work process. Manufacturers produce metallized tape of different widths. When selecting material, add 45 mm to the seam width.

The tape, which has a protective strip of polypropylene, withstands mechanical stress well. In addition, it does not react with acids, organic solvents and alkalis.

3 We understand the variety of types of tapes - VS or GPL?

First on the list is PSUL (pre-compressed self-expanding sealing tape). It ensures a high-quality fit of the window frame or door frame to the wall. This tape is used for vapor barrier of external joints and seams.

The next material is vapor barrier BC. It is used for sealing seams when dry finishing is performed. For example, under sandwich panels, drywall, plastic surfaces And so on. The tape has a layer of adhesive across its entire width - this property greatly simplifies the installation process. There is an improved version - BC+. It is supplemented with anti-adhesive film. This additional coating ensures strong adhesion of the insulation to building materials.

Robiband tape VM for vapor barrier

Robiband tape VM for vapor barrier is the next high-quality material option for processing seams. It is used for interior work, and a wet plaster solution is applied on top. Vapor barrier VM+ is a more complicated option with better performance characteristics.

The last type is GPL (hydro-vapor barrier material). It is made from high quality foamed polyethylene. The tape has one laminated side, as well as an additional metallized layer. Its second surface is completely covered with glue. This tape is universal, that is, it can be used for all types of work. Its variety is GPL-S tape, which has similar characteristics.

4 How to glue insulation - we work without errors

Vapor barrier material not only provides protection from moisture, but also has an alternative property when applied correctly - sound absorption. Vapor barrier tape is applied to the seams in one piece; there should be no breaks. Before starting work, measure the length of the surfaces to be treated.

The pasting process consists of several steps:

1. Clean the window opening from dirt, dust and debris.
2. Before installation, remove the PVC window and wipe with a dry cloth.
3. Place the structure in place and mark the places where the tape is attached on the frame and wall.
4. The tape is attached to window frame before applying foam along the seam.
5. Take out the structure and stick a vapor barrier on its surface around the perimeter.
6. Before installing the window in place, remove the remaining protective film from the adhesive surface.
7. When gluing the material, do not allow wrinkles to form. This defect will allow drops of liquid to pass under the vapor barrier, impairing performance.

In order for a window structure to last long enough, its installation must be carried out in strict compliance with existing technology. External material for steam, heat and water insulation must be glued after the polyurethane foam has completely polymerized. We process the seam under the window sill last.

If the tape is glued under a layer of plaster, then it must have a special layer that will ensure strong adhesion to building material. The uneven joint between the wall and the window frame is covered with a stripping, and a vapor barrier is glued onto it. The use of building materials for wall decoration is permissible only if the requirements for water permeability are fully met.

If metallized tape is used for vapor barrier, then additional reinforcement may be required when applied to a rough surface. To enhance the adhesive effect, use self-adhesive tape with one or two strips of glue. It is additionally used to process vapor barrier joints, eliminating and smoothing out defects (places of peeling and wrinkling) formed during the work process.

Question about the need for vapor barrier of windows by gluing the joints of window frames and slope outer wall vapor barrier tape has no clear answer. But having decided to install plastic windows in your house, it is very useful to understand some aspects of the problem:

The use of vapor barrier tapes increases the cost of installation. But it is not a fact that sticking tape will achieve high quality installation Preparation of the base for the tape is very important, and the sticker technology has subtleties. Installation violations lead to the fact that the tape simply peels off and ceases to perform its task of vapor barrier. In addition, the unevenness of the opening makes it difficult to install the tape, and quality training They can and do not always do it.

One of the opinions of experts is that with optimal organization of heating and air exchange in the house, windows do not produce condensation or mold in the corners. The dew point is located on the outside of the insulating wall layer, and there cannot be any mold in the window corners. It does not matter whether the windows are sealed with PSUL and a membrane or not. But if there are problems with ventilation hood and the heating in the house is poor, then vapor barrier of the windows will have a positive effect (although the problems of heating and ventilation need to be solved comprehensively). In any case, if a company providing services for installing PVC windows stipulates the conditions for their future use by the customer and offers options for sealing joints, this is definitely a plus for the company. Since there are “companies” and employees who “don’t like” the abbreviations PSUL and argue that they don’t spare foam, and the warranty on the window whole year. Unfortunately, the installation is not always successful and in the second winter there is no blowing from the cracks of the windows, and in the off-season there is no condensation along the slopes.

The seams between window frames and external walls are one of the weakest links and require careful water and thermal insulation. Polyurethane foam, filling the space between the opening and the frame, perfectly insulates from air noise and performs the task of thermal insulation of the joint. But moisture and ultraviolet radiation can destroy foam in a period of several months to two years. They solve this problem by protecting the foamed joint with sealing. Waterproofing is carried out on the outside so that atmospheric moisture does not fall on the porous insulation; from the inside of the room, the joint is taped with vapor barrier tape.

A vapor barrier is necessary to prevent moisture from the outside air from penetrating into the thermal insulation materials junction. According to standards, internal seams for PVC windows must have a vapor permeability of no more than 0.01 mg/m*h*Pa. The vapor barrier is installed before installing the windows, sealing the joint from the inside: the window block is installed in the opening without fixing, areas for sticking tapes are marked, then the block is removed and vapor barrier tapes are glued.

Means for protecting the joints of windows and balcony doors:

Silicone sealants
Insulation with padding - cords, tow, moss
Foil tapes
PSUL tapes and butyl rubber tapes

To make the right choice, it is important to consider the type of window finish and the position of the joint. To protect the joints of frames and plasterboard and plastic slopes(dry cladding) and to protect windows with plastered slopes, various insulation means are used. For wooden windows installed in log houses, natural fillers are usually used - sphagnum, jute, flax tow and so on.

Vapor barrier device

There are three layers:

From the inside - thermal protection prevents heat loss from the room to the street
The middle load-bearing insulating layer provides thermal insulation and sound insulation. These problems are solved by polyurethane foam or other porous material. It is rational to include vapor barrier self-adhesive tapes in this inner layer if the window unit is installed in wet rooms - kitchens, baths or showers
The outer layer waterproofs the joint and protects against the penetration of cold street air

Vapor barrier tapes are available with a one-sided adhesive layer and double-sided. A one-sided sticker is used if the film is mounted on the side surface of the window frame. Double-sided tape gives an advantage in choosing fasteners: on the frame or in the window opening. According to climatic modifications, tapes are also produced in two types - for areas with low winter temperatures - winter option tape, and for areas where temperatures do not fall below +5⁰С - a summer option.

The base for the adhesive layers of the tapes is butyl rubber or metal.

Main types of vapor barrier tapes:

PSUL, or pre-compressed sealing tape - is used for finishing and vapor barrier of external joints, ensures a tight connection of the window frame with outer wall. The base material is butyl rubber; the thickness and elasticity of the tapes provide good insulation.
BC - vapor barrier tapes for sealing joints for dry finishing of slopes - made of plastic or plasterboard. sizing with BC tapes reduces the risk of condensation.
VM - vapor barrier tapes attached to the window frame, with an overlap, in order to improve the thermal insulation of joints.
GPL is a polyethylene foam tape, laminated on one side, with metal strips and an adhesive layer over the entire width.

In addition to the main layer of non-crosslinked polyethylene foam, which is 2 mm thick and is waterproofing, the GPL tape has a second layer - both vapor barrier and protective. The thickness of the outer layer is only 20 microns, the material is polypropylene.

GPL tapes are used for all types of door and window blocks as universal ones. They combine two tasks - waterproofing and vapor barrier. The structure of foamed polyethylene is elastic and closed-porous, so the material does not absorb moisture and its hygroscopicity is almost zero. The tapes are flexible and suitable for mounting on uneven surfaces. Metal lamination and the quality of the main polymer (polypropylene as a protective layer) determine chemical resistance in both acidic and alkaline environments, and as a result, good durability of GPL tapes.

They produce GPL tapes in standard width sizes of window and door units, width 9; 12; 15; and 20 cm, in rolls of 15 m.

Features of installation of vapor barrier tapes

The minimum temperature for installing tapes is +10⁰С
The tapes are applied to the prepared surface - complete cleaning of all contaminants, dust removal and degreasing. Preparation is vital for the vapor barrier to work properly.
Marking lines for attaching vapor barrier tapes. Determine the position of the frame in the opening without fixing, mark the lines for sticking the tapes, then remove the frame and install the tape according to the markings
Protective paper strips are removed from the tapes immediately before the final installation of the frames
After gluing the tapes, the joint is filled with foam
The tapes under the window sills are installed last
If wet plaster is planned over the vapor barrier tape, then outer side The tape must ensure adhesion to the solution. From the range of vapor barrier tapes it is possible to choose a material with the desired properties
Glue the tapes along the perimeter of the frames without breaks, in continuous stripes. Overlapping and overlapping of tapes is not necessary; at joints they are used adhesive compositions, recommended by manufacturers, or tape

The issue of the need for vapor barrier of windows is decided by each owner, based on the specific operating conditions of the windows. Budget options Installation of tape is absolutely excluded. But many experts believe that vapor barrier of windows is by no means a reinsurance, but a real opportunity to increase the service life of window systems and improve the indoor microclimate, and save in this case- not entirely correct approach.

Salute, readers!

I love thematic forums, where everyone has their own opinion and teaches others.

What battles sometimes flare up there!

This time, at one of these forums, I was able to witness a debate about the need to use vapor barrier tape.

One forum member, foaming at the mouth, argued that it was not needed and this was a good advertising ploy for one of the Western companies, another explained why it would be bad without it.

If you don’t yet know what a vapor barrier tape is, then this topic is just for you.

Welcome!

Vapor barrier tape for windows

Vapor barrier tapes for windows, like good finish slopes and installation seams will ensure decent window performance. In order for the window in your home to function well and for a long time, you should not miss such a moment as installing a vapor barrier tape.

The use of sealed tapes to isolate the assembly seam from vapors and moisture in the adjacent room prevents condensation from escaping onto the slopes.

If you have a kitchen, a room with a swimming pool or a bathhouse, then installing vapor barrier tape on your windows is a must.

Types of vapor barrier tape

Tapes can be either with one or two adhesive strips. Two adhesive strips are intended for attaching the tape with one side to the window and the other to the wall.

Vapor barrier tapes are also classified according to weather periods:

for summer with air temperatures from + 5°C to + 35°C;
For winter period with temperatures below 0°C.

The width of the tape also varies depending on needs, which allows for reliable vapor barrier of seams of various sizes. When choosing vapor barrier tapes, keep in mind that its width should be about 45 mm greater than the width of the installation seam.

Tapes for outdoor work consist of foamed materials (this work requires well-sealing materials with plaster mortar, which will provide the required vapor barrier of the outer layer).

Vapor barrier tape can be butyl rubber, for sealing interpanel joints or for installing door or window blocks.

This tape contains non-woven fabric. During installation, it is primed, plastered and painted. This type is also self-adhesive.

To protect against high humidity of the installation seam for dry finishing of slopes, there are metallized vapor barrier tapes on the market.

General information on installing vapor barrier tape

Initially, you need to prepare your opening: clean the internal and external surfaces of the opening and frame from dirt, dust and other debris. The frame is inserted into the opening and is temporarily not secured.
Then gently mark a line on the frame for attaching the vapor barrier tape.
After carrying out the calculations and marking the window, we remove the frame and glue our internal vapor barrier tapes. We do not remove the paper strip that protects the inner adhesive layer, which will subsequently attach to the walls.

As a rule, the installation of a vapor barrier tape on a structure is carried out before the seam foams.

Helpful advice!

Therefore, before finishing, dampening and filling with foam, you can remove the protective paper strips from the vapor barrier tapes.

This will allow you not to lose the adhesive properties of the tape. If you are driving hidden installation, then the tape should be attached to the ends of the structure from above and on the sides, and to the installation profile from below.

External thermal insulation tapes can be glued no earlier than the polyurethane foam has been completely polymerized.
Installing a vapor barrier tape under the window sill can be done last. When installing a vapor barrier tape under a plaster layer, the tape must have an outer coating, which will ensure the necessary adhesion to this plaster layer.

If there is a window quarter with gaps between the frame and the wall, another technique is used: the uneven joint can be covered with a window strip, and a vapor barrier tape can be applied to it.

Installation of vapor barrier tape on windows is installed in a continuous layer along the entire contour of the opening.

Do not forget that the use of finishing building materials in combination with a vapor barrier tape is allowed only if the moisture-permeable characteristics are met.

source: moscowsad.ru

Self-adhesive hydro-steam and heat-insulating foil tape (vapor barrier)

Self-adhesive GPL tape is a reliable solution to problems associated with heat, hydro, and vapor barrier of assembly seams, joints, joints and junctions in various building structures– window and door blocks, products made of metal, concrete, wood, plastic, etc.

The vapor barrier layer of the material creates reliable waterproofing, thereby preventing the occurrence of spores, fungi and mold, which significantly extends the life of the structure.

Heat losses are significantly reduced and energy costs are significantly reduced.

The adhesive layer simplifies the fastening of the tape, making installation simple and easy, while ensuring reliable fastening of the tape on all types of building materials.

GPL - Self-adhesive foil tape for hydro-steam and thermal insulation (vapor barrier).

The surfaces to be treated must be clean, dry and grease-free. The tape is unwound from the roller (width 90,120,150,200 mm) and cut into pieces of the required sizes.

Remove the protective film and, without stretching it lengthwise, stick the tape onto the surface to be treated. Press the tape tightly with your hands or smooth it with a roller, avoiding the formation of air bubbles.

Supplied in boxes 420x420x600 mm.
Recommended installation temperature is not lower than +10°C.

Self-adhesive heat-, hydro-, vapor barrier tapes GPL - consist of foamed polyethylene laminated on one side with a metallized polypropylene film, on the other side a layer of special waterproof adhesive is applied, which allows the material to be securely fastened to metal, brick, concrete, wood, plastic and other structures .

Sticky layer - a special waterproof adhesive made of synthetic rubber with increased adhesion to various materials, which allows the use of tapes without prior surface preparation.

It is important!

Material Dimensions

Thickness of polypropylene film (µm) - 20
Thickness of NPE -Gazovka (mm) – 2
Length (m) - 15
Width (mm) - 90 / 120/150/200

Material characteristics

Thermal reflection coefficient, no less than 95%
Thermal conductivity coefficient, at 20°C, no more than - 0.038 - 0.051 W/m °C
Heat absorption coefficient for a period of 24 hours, S - 0.48 W/(m2 °C)
Specific heat capacity - 1.95 kJ/kg °C
Thermal resistance, per 1 mm of thickness, m2 - 0.031 °C/W
Vapor permeability - 0 mg/(m h Pa)
Dynamic modulus of elasticity (under load 2-5 kPa) - 0.26-0.6 MPa
Sound absorption, no less than - 32 dB
Smoke generating ability - D3
Flammability group - G2

source: www.profband.ru

Installation of internal vapor barrier sealing tape

For internal sealing of the assembly seam, the following is used:

a) vapor barrier tape (duplicated) based on aluminum foil, laminated with non-woven fabric, allows you to protect the installation seam from the inside from moisture and prevents it from escaping from the seam onto the surface of the internal slopes.

For easy and reliable fixation, the tape contains two adhesive strips of glue and butyl, located on two different sides. It is recommended to use it around the entire perimeter of the window for subsequent finishing of slopes using a dry method.

b) the vapor-tight sealing tape is made of non-woven fabric coated with a self-adhesive plastic-elastic mass based on butyl rubber with a high degree of adhesiveness.

The peculiarity of butyl rubber tapes is their fairly heavy weight. And, if you compare butyl rubber and reinforced foil tapes with the same width of 120 mm, it turns out that reinforced foil tape is almost 5 times lighter than butyl rubber tape.

The low weight of the tapes makes it easier to work with them during installation, and also significantly reduces transportation costs when transporting tapes over long distances.

However, tapes based on reinforced foil with adhesive strips have adhesion only to a well-cleaned and degreased surface of the internal slope, while butyl rubber tapes have a tighter fit and better adhesion to the wall opening.

To install the internal vapor barrier sealing tape, you must do the following:

Cut the tape into pieces equal to the width and length of the window +10 cm (to form corner connections). Joining of tapes along the length is allowed “overlapping”, at least ½ of the width of the tape.
Remove the protective paper from the vapor barrier tape from the side of the duplicated strip and glue it to the frame profile from the outside.
The tape is attached by means of a self-adhesive duplicated mounting strip in a tensioned state (tightly, without folds or bulges) to the outer surface of the box from the inside vertically and horizontally across the ceiling. The inner edge of the adhesive layer must coincide with the inner edge of the frame. The tape protecting the butyl rubber layer is not removed at this stage of installation.

The adhesive strip has a fairly high resistance to low temperatures without loss of adhesive properties.

Lack of adhesion can occur if the acrylic adhesive strip is left in the cold for a long time with the release paper removed.

Also, the adhesion of the adhesive strip decreases when working with cold window blocks, since when the worker breathes, steam (moisture) is released, which partially condenses on the surface of the cold window block, which also reduces the adhesion of the adhesive strips.

To prevent this defect, it is recommended to keep the adhesive layers with the anti-adhesive paper removed for the minimum possible time, and also to wipe the surface of the window block with a dry rag or paper napkin immediately before gluing the tapes to it.

source: www.wikipro.ru

How to properly apply vapor barrier tape on PVC windows

Question: How to properly use vapor barrier tape for PVC windows and at what temperature?

Answer: Installation of vapor barrier tapes on plastic windows is carried out as usual in those rooms where there is high air humidity - kitchen, bathhouse, swimming pool.

The tape allows you to protect the installation seam from moisture and steam emanating from the room and thus does not allow condensation to escape into the window slopes. Vapor barrier tapes are produced with one or two adhesive strips.

The tape with two adhesive strips is very convenient to attach to the window and to the slope. Vapor barrier tapes are divided into summer and winter, depending on the weather conditions in the room.

Summer tapes can be used at air temperatures from +5 to +35C, and winter tapes at air temperatures below 0 degrees. You need to choose a tape for windows of such a width that it is 45 millimeters wider than the width of the mounting seam. This will allow you to ensure reliable vapor barrier at the installation seams of your windows.

The technology for installing windows and using vapor barrier tape is as follows. We clean the opening from dirt and dust, install the window frame and, without securing it, mark the lines for attaching the vapor barrier tape on the walls of the opening and on the window frame.

We remove the frame from the opening and glue a vapor barrier tape onto it; we do not remove the protective strip on the part that will be glued to the wall!

Helpful advice!

We install vapor barrier tape on a PVC window with one piece of tape, without breaks!

Now you can assemble the window with sashes and install them completely in their place. We install the vapor barrier tape on the window sill last.

source: blogstroiki.ru

Materials for window installation

PSUL tape.

It is used when installing window blocks to create a ventilated assembly seam.

Corresponds to GOST 30971-2002 “Installation seams of joints connecting window blocks to wall openings.”

Ensures reliability and durability of the assembly seam. The material is a self-adhesive polyurethane foam tape impregnated with a special composition. The tape is supplied compressed and rolled into rollers.

A wide range of standard sizes of tape sealant allows you to select a material to protect seams of almost any size.

Application of PSUL tapes. The scope of application of the tapes is a universal multifunctional tape. The tape is used to protect moving and fixed joints from water, noise, cold, dust penetration and other unfavorable factors.

Typical application examples:

Sealing joints and moving seams of panels, blocks and small pieces wall materials on building facades;
Sealing the gaps between the window and door frame and an opening in the wall;
Sealing gaps between translucent structures and building walls;
Sealing seams between sections of prefabricated structures.

BC tape.

BC tape is intended for finishing internal slopes of window openings using the dry method (plasterboard, plastic, sandwich panels).

BC tape is a vapor barrier tape used to create a ventilated assembly seam.

BC tape prevents condensation from forming on the surface of internal slopes and protects the mounting foam from moisture from the room side.

The tape has an adhesive layer covering the entire width of the tape, protected by an anti-adhesive film. The tape is supplied in rollers 50 linear meters long and of various widths.

BC+ tape.

BC+ tape is intended for finishing internal slopes of window openings using the dry method (plasterboard, plastic, sandwich panels).

BC+ tape is a vapor barrier tape used to create a ventilated assembly seam.

BC+ tape prevents condensation from forming on the surface of internal slopes and protects the mounting foam from moisture from the room side.

The tape has an adhesive layer covering the entire width of the tape fastening, protected by an anti-adhesive film, on one side and an adhesive strip, for ease of installation, on the other side.

VM tape.

VM tape is intended for finishing the internal slopes of window openings with subsequent application of plaster.

VM tape is a vapor barrier tape used to create a ventilated assembly seam.

VM tape prevents condensation from forming on the surface of internal slopes and protects the mounting foam from moisture from the room side.

The tape has an adhesive layer covering the entire width of the tape, protected by anti-adhesive paper. The tape is supplied in rollers 25 linear meters long and of various widths.

VM+ tape.

VM+ tape is intended for finishing the internal slopes of window openings with subsequent application of plaster.

VM+ tape is a vapor barrier tape used to create a ventilated assembly seam.

VM+ tape prevents condensation from forming on the surface of internal slopes and protects the mounting foam from moisture from the room side.

The tape has an adhesive layer covering the entire width of the tape, protected with anti-adhesive paper, on one side and an adhesive strip, for ease of installation, on the other side.

The tape is supplied in rollers 25 linear meters long and of various widths.

Water vapor barrier tape (GPL).

The base is foamed polyethylene, which has high thermal insulation properties. Due to the closed cellular structure, polyethylene foam has extremely low hydroscopicity, i.e. practically does not absorb moisture.

Polyethylene foam gives the tape elasticity, which is necessary for sealing seams with various irregularities. The outer layer is a metallized polypropylene film.

Polypropylene film has high mechanical strength and resistance to alkalis, acids and organic solvents, thanks to this, the reflective layer is reliably protected from oxidation and mechanical damage.

It is important!

In addition, polypropylene film is a good vapor barrier.

To prevent the layers in the roll from sticking together, the sticky layer is protected with a siliconized film.

Application: heat, hydro, vapor barrier of assembly seams and joints in various building structures - window and door blocks, metal products, concrete, wood, plastic, etc.

Water vapor barrier tape (GPL-S).

Self-adhesive heat-, hydro-, vapor barrier tapes - consist of foamed polyethylene laminated on one side with a metallized polypropylene film, on the other side a layer of special glue is applied, which allows the material to be securely fastened to metal, brick, concrete, wood, plastic and other structures.

An additional adhesive strip is applied on the film side for ease of installation. The base is foamed polyethylene, which has high thermal insulation properties.

Due to the closed cellular structure, polyethylene foam has extremely low hydroscopicity, i.e. practically does not absorb moisture. Polyethylene foam gives the tape elasticity, which is necessary for sealing seams with various irregularities. The outer layer is a metallized polypropylene film.

Polypropylene film has high mechanical strength and resistance to alkalis, acids and organic solvents, thanks to this, the reflective layer is reliably protected from oxidation and mechanical damage.

Application: heat, hydro, vapor barrier of assembly seams and joints in various building structures - window and door blocks, metal products, concrete, wood, plastic, etc.