What is a vapor barrier tape for a window and why is it used during installation. Window tapes: overview, description Diffusion vapor-permeable tape for windows

Useful information

Installation of PVC windows provides for the use of special insulating materials. This category includes foam for PVC windows and tape. Each of these materials has a specific purpose. As a rule, the tape serves to isolate the seams from dust and moisture, preventing the formation of mold and mildew in the joints. In turn, the foam compensates for the effects of temperature changes and provides reliable sound insulation.

Installation tapes for windows

The tape is selected taking into account the functional purpose. We offer to buy mounting tape for plastic windows for any task - for sealing ebb or slopes, window sills or window openings. We recommend paying attention to the PSUL tape.

At a relatively low cost, it has excellent performance parameters, reliably protecting the seams from dust and moisture. In addition, its installation is carried out without special tools. The self-adhesive surface adheres tightly to the base without much effort.

Foam for windows

Insulation of windows with polyurethane foam has been especially important lately. By correctly installing the window unit, you can significantly reduce heat loss. Naturally, the effectiveness of such insulation is determined by the properties of the material. And here the question usually arises: polyurethane foam for PVC windows - which one is better? Basically, the insulating characteristics depend on the components included in the foam, as well as on the production technologies used by the manufacturer.

Buy PSUL in Moscow

Our category is represented by the German company Bauset, which has been one of the leading manufacturers in Europe for many years. If you follow the manufacturer's instructions, the consumption of foam on the window is minimal - at low cost, you can reliably seal the window unit and extend its service life. In the adjacent sections of the catalog, you can pick up all the necessary tools to perform the work.

To protect the assembly seams in window openings from moisture, a vapor barrier tape is used. It is made from butyl rubber or aluminum. This material is glued to damp 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 will be. Even the highest quality structures will not operate for a long time if the installation is incorrect. Wrong work will cause moisture to gradually penetrate the walls, leading to the destruction of building materials and the spread of mold.

Vapor barrier tape

When installing the frame, keep in mind a few important points:

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

Vapor barrier provides reliable protection of the thermal insulation layer from condensation, which is present not only in the bathroom, but also in the usual room. In the process of finishing window slopes, we glue a special tape. The principle of vapor barrier is based on overlapping the contact of moisture with polyurethane foam, which forms the middle protective layer. For these purposes, materials with low elasticity and permeability to water and air are suitable. When installing windows, you cannot save on vapor barrier. 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 are available in a coiled, compressed, sponge-like material. Absorbing moisture, the material swells, filling up all existing cracks. Vapor barrier tape for plastic windows has a number of advantages:

1.It isolates moisture;
2. it is consumed economically, practically without 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 joint between the window and the wall in a better quality. The material is classified according to the periods of use:

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

Depending on the nature of the surface to be treated, tapes are produced in various sizes, so that any seams can be insulated. When choosing a material, keep in mind that it should exceed the gap by 4.5 cm in width. Foam tapes are suitable for working from the outside of the building, which will provide a reliable seal.

Moisture insulation tape

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

Metallized vapor barrier material is used for pasting seams with joints in rooms with high air humidity - bathrooms, 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 choosing material, add 45 mm to the seam width.

The tape, which has a protective polypropylene strip, 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 good 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 a vapor barrier VS. It is used for sealing joints when dry finishing is done. For example, for sandwich panels, drywall, plastic surfaces, etc. The tape has a layer of adhesive over the entire width - this property greatly simplifies the installation process. There is an improved version - ВС +. It is supplemented with an anti-adhesive film. This additional coating provides strong adhesion of insulation to building materials.

Robiband tape VM for vapor barrier

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

The last type is GPL (waterproofing material). It is produced from high quality foamed polyethylene. The tape has one laminated side and 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 type is GPL-S tape, which has similar characteristics.

4 How to stick insulation - we work without mistakes

The vapor barrier material not only provides protection against moisture, but also has an alternative property, when properly glued, - sound absorption. The application of a vapor barrier tape to the seams is done in one piece, there should be no breaks. Before starting work, measure the length of the surfaces to be treated.

The gluing 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 tape attachment points on the frame and wall.
4. The tape is attached to the window frame before the foam is applied along the seam.
5. Take out the structure and stick a vapor barrier on its surface around the perimeter.
6. Before reinstalling the window, remove the remaining protective film from the adhesive surface.
7. When gluing the material, do not allow the formation of folds. This defect will allow droplets of liquid to pass under the vapor barrier, impairing performance.

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

If the tape is glued under a layer of plaster, then it must have a special layer that will provide strong adhesion to the building material. The uneven joint between the wall and the window frame is closed with a cover strip, 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 observed.

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, self-adhesive tape with one or two strips of glue is used. They additionally process the joints of the vapor barrier, eliminating and smoothing out defects (places of flaking and wrinkling) formed in the course of work.

The question of the need for vapor barrier of windows by gluing the joints of window frames and the slope of the outer wall with vapor barrier tape does not have an unambiguous answer. But having decided to install plastic windows in the house, it is very useful to understand some aspects of the problem:

The use of vapor barrier tapes increases the cost of the installation. But it is not a fact that a high quality installation will be achieved with the tape sticker. Preparation of the base for the tape is very important, and the sticker technology has subtleties. Violations of installation 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 they do not always know how and do they do quality preparation.

One of the experts' opinions is that with optimal organization of heating and air exchange in the house, windows do not give any condensation or mold in the corners. The dew point is on the outside of the insulating wall layer, and there can be no mold in the window corners. It doesn't matter if the PSUL windows are glued with a membrane or not. But if there are problems with the ventilation hood and the heating does not work well in the house, then the vapor barrier of the windows will give a positive effect (although the problems of heating and ventilation must be solved in a comprehensive manner). In any case, if a company providing services for the installation of PVC windows stipulates the conditions of their future operation by the customer and offers options for sealing joints - this is definitely a plus for the company. Since there are "companies" and workers who "do not like" the abbreviations of PSUL and argue that they do not spare foam, and the guarantee for the window is a whole year. Unfortunately, in the end, the installation is not always successful and for the second winter it does not blow from the cracks of the windows, and in the off-season there is no condensation on the slopes.

Seams between window frames and exterior walls are one of the weakest links and require careful waterproofing and thermal insulation. Mounting foam, filling the space between the opening and the frame, perfectly insulates from airborne noise and performs the task of thermal insulation of the joint. But moisture and ultraviolet light can destroy the foam in a period of several months to two years. They solve this problem by protecting the foamed joint with a seal. From the outside, waterproofing is performed so that atmospheric moisture does not get on the porous insulation, from the inside of the room, the joint is glued with a vapor barrier tape.

Vapor barrier is necessary so that moisture from the outside air does not penetrate into the thermal insulation materials of the joint. According to the norms, the internal seams for PVC windows must have a vapor permeability of no more than 0.01 mg / m * h * Pa. The vapor barrier is mounted before the windows are installed, sealing the joint from the inside: the window block is installed in the opening without fixing, the areas for the adhesive tapes are marked, then the block is removed and the vapor barrier tapes are glued.

Means for protecting the joints of windows and balcony doors:

Silicone sealants
Padded insulation - cords, tow, moss
Foil tapes
PSUL tapes and tapes based on butyl rubber

For the right choice, it is important to take into account 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, different insulation means are used. For wooden windows installed in log cabins, natural fillers are usually used - sphagnum, jute, linen tow, etc.

Vapor barrier device

There are three layers:

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

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

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

The main types of vapor barrier tapes:

PSUL, or pre-compressed sealing tape - is used for finishing and vapor barrier of external joints, provides a tight connection of the window frame with the external wall. the base material is butyl rubber, the thickness and elasticity of the tapes give good insulation.
ВС - vapor barrier tapes for sealing joints for dry finishing of slopes - made of plastic or drywall. gluing 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 the joints.
GPL - 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 uncrosslinked polyethylene foam, which has a thickness of 2 mm and is waterproof, 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. 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, hygroscopicity is practically zero. The tapes are flexible and suitable for mounting on uneven surfaces. Lamination with metal 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.

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

Features of installation of vapor barrier tapes

Minimum temperature for tapes installation - + 10⁰С
Sticking tapes is carried out on the prepared surface - complete cleaning of all contaminants, dust removal and degreasing. Preparation is essential for proper vapor barrier function.
Layout of lines for fastening 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 mount the tape according to the markings
The protective paper strips are removed from the tapes just before the final installation of the frames.
After gluing the tapes, the joint is filled with polyurethane foam.
The tapes under the windowsills are mounted last.
If wet plaster is planned along the vapor barrier tape, the outer side of the tape must ensure adhesion with the mortar. From the assortment of vapor barrier tapes, it is possible to choose a material with the desired properties
Tapes are glued along the perimeters of the frames without breaks, in continuous stripes. The overlap and overlap of the tapes is not needed; at the joints, use adhesives recommended by the manufacturers, or scotch tape

The question of the need for vapor barrier of windows is decided by each owner, based on the specific operating conditions of the windows. Budget options for mounting the tape are absolutely excluded. But many experts believe that the vapor barrier of windows is by no means a reinsurance, but a real opportunity to increase the resource of window systems and improve the indoor climate, and saving in this case is not quite the correct approach.

Salute, readers!

I love thematic forums, where everyone, with his own opinion, teaches others.

What battles sometimes flare up there!

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

One forum member, foaming at his mouth, argued that she was not needed and that this was a good publicity stunt for one of the Western companies, another explained why it’s bad without it.

If you still don't 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, as well as a good finishing of slopes and assembly joints, will provide 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 used sealed tapes to isolate the assembly seam from vapors and moisture in the adjoining room prevent condensation from escaping onto the slopes.

If you have a kitchen, a room with a pool or a sauna, then installing a vapor barrier tape on the windows is simply necessary for you.

Varieties of vapor barrier tape

Tapes can be with one or two adhesive strips. Two adhesive strips are used to attach the tape with one side to the window and the other to the wall.

Also, vapor barrier tapes are classified according to weather periods:

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

The width of the tape also varies depending on the needs, which makes it possible to provide reliable vapor barrier for joints of various sizes. When choosing vapor barrier tapes, keep in mind that its width should be about 45 mm more than the width of the assembly seam.

Outdoor tapes consist of foamed materials (for this work, well-sealing materials with plaster mortar are needed, which will provide the required vapor barrier for the outer layer).

The vapor barrier tape can be butyl rubber, for the tightness of interpanel joints or for the installation of door or window blocks.

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

There are metallized vapor barrier tapes on the market to protect the assembly seam from high humidity for dry finishing of slopes.

General information on installing vapor barrier tape

Initially, you need to prepare your opening: clean the inner and outer 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 the line on the frame for attaching the vapor barrier tape.
After calculating and marking the window, we remove the frame and glue our internal vapor barrier tapes. The paper strip that protects the inner adhesive layer, which is subsequently attached to the walls, cannot be removed.

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

Helpful advice!

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

This will help you maintain the adhesive properties of the tape. If you are conducting a hidden installation, then the tape should be attached to the ends of the structure from above and on the sides, and from the bottom to the installation profile.

External heat-insulating tapes can be glued no earlier than the complete polymerization of the polyurethane foam.
The installation of the vapor barrier tape under the windowsill can be done last. When a vapor barrier tape is installed under the plaster layer, the tape must have an outer coating that will provide the necessary adhesion to this plaster layer.

In the event that the window quarter with gaps between the frame and the wall, a different technique is used: an uneven joint can be closed with a window strip, and a vapor barrier tape can be glued onto 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 observed.

source: moscowsad.ru

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

Self-adhesive tape GPL is a reliable solution to problems associated with heat, hydro, and vapor insulation of assembly seams, joints, joints and abutments in various building structures - window and door blocks, metal products, 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, 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 to all types of building materials.

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

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

Remove the protective film and, without stretching along the length, stick the tape on the surface to be treated. Press the tape firmly 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 ° С.

Self-adhesive heat-, hydro-, vapor-insulating tapes GPL - consist of foamed polyethylene laminated on one side with a metallized polypropylene film, on the other side there is a layer of special waterproof glue that allows you to securely fix the material on metal, brick, concrete, wood, plastic and other structures ...

The sticky layer is a special waterproof synthetic rubber glue with increased adhesion to various materials, which makes it possible to use tapes without preliminary surface preparation.

It is important!

Material dimensions

Polypropylene film thickness (microns) - 20
Thickness of NPE -Gasovka (mm) - 2
Length (m) - 15
Width (mm) - 90 / 120/150/200

Material characteristics

Thermal reflection coefficient, not less - 95%
Thermal conductivity coefficient, at 20 ° С, no more - 0.038 - 0.051 W / m ° С
Heat assimilation coefficient with a period of 24 hours, S - 0.48 W / (m2 ° C)
Specific heat capacity - 1.95 kJ / kg ° С
Thermal resistance, per 1 mm of thickness, m2 - 0.031 ° С / W
Water vapor permeability - 0 mg / (m h Pa)
Dynamic modulus of elasticity (under a load of 2-5 kPa) - 0.26-0.6 MPa
Sound absorption, not less - 32 dB
Smoke-generating ability - D3
Flammability group - G2

source: www.profband.ru

Installing the 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, lined with non-woven fabric, allows you to protect the assembly seam from the inside from moisture and prevents it from escaping from the seam to the surface of the inner slopes.

For easy and secure fixation, the tape has two adhesive strips of glue and butyl located on two different sides. It is recommended to apply it along the entire perimeter of the window for subsequent finishing of slopes with a dry method.

b) The vapor-proof sealing duplicated tape is made of a non-woven fabric covered with a self-adhesive plastoelastic mass based on butyl rubber with a high tack degree.

The peculiarity of butyl rubber tapes is their rather large weight. And if we 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 belts makes it easier to work with them during installation, and also significantly reduces transport costs when transporting belts over long distances.

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

In order to install the inner vapor barrier sealing tape, proceed as follows:

Cut the tape into pieces equal to the width and length of the window +10 cm (to form corner joints). Docking of tapes along their length is allowed "overlap", not less than ½ of the tape width.
Remove the protective paper from the side of the duplicated strip from the vapor barrier tape 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 taut state (tightly, without folds and bulges) to the outer surface of the box from the inner side vertically and horizontally from the ceiling. The inner edge of the adhesive must line up 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 sufficiently high resistance to low temperatures without loss of adhesion properties.

Lack of adhesion can occur if the acrylic adhesive strip is kept 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 removed release paper for the minimum possible time, and also to wipe the surface of the window block with a dry cloth or paper towel just before gluing the tapes to it.

source: www.wikipro.ru

How to properly apply vapor barrier tape on PVC windows

Question: How to correctly apply vapor barrier tape for PVC windows and at what temperature?

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

The tape allows you to protect the installation seam from moisture and steam emanating from the room and thus prevent condensation from escaping onto the window slopes. Vapor barrier tapes are produced with one and two adhesive strips.

It is very convenient to attach the tape with two adhesive strips 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 ones at air temperatures below 0 degrees. Choosing a tape for windows should be of such a width that it is 45 millimeters wider than the width of the assembly seam. This will allow you to provide a reliable vapor barrier for the assembly joints of your windows.

The very technology of installing windows and using a vapor barrier tape is as follows. We clean the opening from dirt and dust, install the window frame and without fixing it, mark it on the walls of the opening and on the window frame of the line of fastening of the vapor barrier tape.

We remove the frame from the opening and glue a vapor barrier tape on it, the protective strip on the part that will be glued to the wall is not removed!

Helpful advice!

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

Now you can assemble a window with sashes and install it capitally in its place. Install the vapor barrier tape on the windowsill 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 "Seams of assembly units for joining window blocks to wall openings".

Provides reliability and durability of the assembly seam. The material is a self-adhesive polyurethane foam tape impregnated with a special compound. The belt is delivered in a compressed state, rolled into rollers.

A wide range of standard sizes of tape sealant allows you to choose a material for protecting joints of almost any size.

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

Typical application examples:

Sealing joints and movable joints of panels, blocks and small-piece wall materials on the facades of buildings;
Sealing gaps between the window and door frame and the opening in the wall;
Sealing the gaps of the junction of translucent structures to the walls of buildings;
Sealing joints between sections of prefabricated structures.

Sun tape.

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

ВС tape is a vapor barrier tape used to organize a ventilated assembly seam.

The ВС tape prevents the formation of condensate on the surface of the inner slopes and protects the polyurethane foam from moisture from the side of the room.

The tape has an adhesive layer over the entire width of the tape attachment, protected by an anti-adhesive film. The belt is supplied in rollers with a length of 50 linear meters of various widths.

BC + ribbon.

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

ВС + tape is a vapor barrier tape used to organize a ventilated assembly seam.

The ВС + tape prevents condensation from falling on the surface of the inner slopes and protects the polyurethane foam from moisture from the side of the room.

The tape has an adhesive layer in the entire width of the tape attachment, 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 the subsequent application of plaster.

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

The VM tape prevents condensation from falling on the surface of the inner slopes and protects the assembly foam from moisture from the side of the room.

The tape has an adhesive layer over the entire width of the tape attachment, protected by release paper. The belt is supplied in rollers with a length of 25 linear meters of various widths.

VM + tape.

VM + tape is intended for finishing the interior slopes of window openings with subsequent plastering.

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

The VM + tape prevents condensation from falling on the surface of the inner slopes and protects the polyurethane foam from moisture from the side of the room.

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

The belt is supplied in rollers with a length of 25 linear meters of various widths.

Hydro-vapor barrier tape (GPL).

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

Polyethylene foam gives the tape elasticity, which is necessary for sealing joints 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, due 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 from sticking together in the roll, the sticky layer is protected by a siliconized film.

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

Hydro-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 you to securely fix the material on metal, brick, concrete, wood, plastic and other structures.

An additional adhesive strip is applied on the side of the film for ease of installation. The basis is foamed polyethylene with high thermal insulation properties.

Due to the closed cellular structure, polyethylene foam has an extremely low hydroscopicity, i.e. practically does not absorb moisture. Polyethylene foam gives the tape elasticity, which is necessary for sealing joints 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, due to this, the reflective layer is reliably protected from oxidation and mechanical damage.

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

Hide

Vapor barrier is required for plastic windows. The vapor barrier tape allows you to close joints, seams, 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 tightness of the room and minimum heat loss.

How to mount windows correctly?

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

Stages of installation of windows and common mistakes during their installation, see the link

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

Modern builders are often used to install doors and plastic windows. Read the nvc website for advice from professionals on how to choose it

What is vapor barrier used for in plastic structures?

It is worth considering that the more correct the installation is, the more reliable the structure will be and will be able to serve you longer. Even if, but will be inserted incorrectly, you will not get the desired effect.

It is necessary to ensure that workers are obliged to fulfill the following conditions:

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

A vapor barrier tape is necessary to ensure the protection of the structure from water vapor.

In order for the vapor barrier not to interfere with the plastering, special tapes should be used, on top of which the room can be finished.

What should you know about sealing?

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

Window mounting tape is excellent for protecting the foam. Even if you are going to use platbands that will protect the structure from weather conditions, and can also give the frame a decorative look, you should glue the tape before installing them. It will help to make the insulation of high quality, while making the work not much more expensive.

The most inexpensive and easy-to-install vapor barrier for windows is a special tape that everyone can handle.

The replacement of windows in the house is always accompanied by the installation of protection for the joint between the frame and the wall. Polyurethane foam is applied between the opening and the frame - a traditional and proven thermal insulation. Foam regularly performs its role, but with extreme exposure to moisture or ultraviolet radiation, its quality may change for the worse.

In order to exclude the possibility of such a situation in advance and save yourself from replacing in the future, you should think about sealing the seams. To do this, you need to install additional insulation.

A complete set of insulation allows you to avoid freezing of the room and to exclude the penetration of moisture and noise into the interior as much as possible.

The insulation of the wall-window joint consists of three layers:

Outer. Its function is waterproofing, which means protecting the premises from all weather manifestations - snow and rain.
The carrier insulation layer is located in the middle of the joint and is responsible for heat and sound insulation. Frost protection is provided by a porous material resembling polyurethane foam. The waterproofing agent prevents moisture from getting inside.
The inner layer is also considered to be heat insulating. Here the mechanism of heat conservation is different. This layer does not allow heat to escape from the inside, in contrast to the outside, which protects the premises from cold air currents from the street.

Vapor barrier of windows belongs to the inner layer, but is not always included in the insulation system. One-sided self-adhesive vapor barrier tape or double-sided vapor barrier tape is an additional protection. The need to use tape increases if the window is installed in a room with a high moisture content: kitchen, sauna, bathhouse.

Installation of vapor barrier tapes in complexity does not surpass the installation of other types of seam insulation. However, a vapor barrier can help avoid subsequent serious problems with the entire window protection system. When installing a vapor barrier, in some cases, you may need a couple of additional accessories, for example, an adhesive tape for vapor barrier. It is worth considering.

Classification of vapor barrier tapes

Vapor barrier tapes are manufactured in two versions:

tapes with one adhesive side;
double-sided vapor barrier tapes.

The first type of tape is attached to the window frame of the window. The second makes it possible to choose the place of attachment: both on the frame and in the opening.

In addition to differences in adhesive structure, tapes are divided into two types according to climatic performance:

for predominantly warm average annual weather, "summer" vapor barrier films are suitable;
in the presence of subzero temperatures, "winter" tapes are used.

Adhesive surface of vapor barrier tapes

All vapor barrier films are equipped with an adhesive strip. The absence of the need to independently apply glue eliminates the possibility of poor-quality fastening of the tape, as well as the ingress of moisture into the heat-insulating environment.

The material for the adhesive layer of the vapor barrier tape is butyl rubber or, in cases of high humidity, metal. Tapes containing rubber foil are used for windows, balconies and doors in almost all types of premises. The basis of such a vapor barrier is a non-woven fabric.

Types of vapor barrier tapes

The most common types of tapes, depending on the material:

Some of the most popular butyl rubber tapes are PSUL (pre-compressed sealing tapes), which are responsible for the external vapor barrier, the finishing of the external joints and the tight connection between the frame and the wall.
Polyethylene tape ГПЛ is made of foam material. On the one hand, it is processed by lamination. The strip contains metal inserts and an adhesive part along the entire length and width. Due to its well thought-out composition, it is practically universal and is recommended for insulating all types of door and window frames.
Vapor barrier tape for VS windows. Suitable for insulating joints if a subsequent dry method of finishing slopes is planned. Usually applied on plastic or plasterboard elements. The bonding tape protects the surfaces from condensation. The wide adhesive strip makes the installation of the vapor barrier strip quick and easy.
VM vapor barrier tape. As well as other types of tapes, it is perfectly attached to window and door frames. Installation is carried out in sequence from the frame. The strips of tape are overlapped in order to avoid possible heat leaks during the operation of windows or doors.

Butyl rubber tape has a high specific gravity. The PSUL tape weighs about 5 times more than the tape made with reinforced aluminum foil at the same width. The differences between the types of tapes also lie in the surfaces for which they are usually used. Thick rubber tape is able to adhere firmly to the wall, and there is no need to use heavy insulating materials for gluing with slopes. For this case, lightweight foil-reinforced strips are preferred.

GPL tapes

GPL - steam waterproofing tapes that perform moisture protection as the main task. These tapes form an outer layer of insulation with an additional vapor barrier function.... Self-adhesive vapor barrier tape is made of foamed polyethylene.

Polyethylene foam has a porous structure, has good thermal insulation properties and practically zero hygroscopicity (does not absorb moisture). The presence of this material in the tape makes it elastic and provides high-quality sealing with any surface, including uneven ones.

On one side the strip is laminated with a thin film of metal, on the other side there is glue. A special moisture-resistant glue allows the tape to easily adhere to any materials: plastic, metal, wood, brick, without requiring labor-intensive preparation.

In general, polypropylene film has significant fracture and chemical resistance to both alkalis and acids. Thanks to these qualities, polypropylene vapor barrier for windows is used without wear and oxidation.

Characteristic of GPL

The vapor barrier tape GPL is characterized by:

heat reflection - not less than 95%;
thermal conductivity - 0.04-0.05 W / m · ° С;
specific heat capacity - 1.95 kJ / kg · ° С;
zero vapor permeability;
sound absorption - from 32 dB.

The tape is transported as a rolled roll. Bonding of layers does not occur; to prevent it, a paper film is laid.

Dimensions of self-adhesive tape GPL

The dimensions of the insulating strip for plastic windows are characterized by width, length and thickness:

Width varies according to the needs of the buyer. Standard sizes - 90/120/150/200 mm;
Typical tape roll length - 15 m;
The tape has two layers in thickness:
- the first insulating layer - non-crosslinked polyethylene foam, 2 mm;
- the second is directly vapor barrier - polypropylene film, 20 microns. This thin film of the relative entire thickness of the layer is sufficient so that condensation does not fall on the slopes of the window opening, and the entire window protection system from weather manifestations worked better.

Installation of vapor barrier is carried out at a temperature of 10 ° C.

Installation of vapor barrier tape

The installation of a vapor barrier tape is built in several stages:

Preparation and processing of a window / door opening. The surface of the walls of the opening and the frame must be free of dust. The less pollution, the more reliable the thermal insulation.
It is necessary to mark the line of fastening of the vapor barrier tape. To do this, you need to put the frame in the opening without fixing it, and visually calculate where you need to draw the line.
After that, the frame is removed back, and the vapor barrier strip is glued along the marked lines.
The paper films covering the adhesive are removed last.
The installation of the vapor barrier tape is completed by covering the joint with foam.
If it is necessary to install the tape in the area under the windowsill, then it is performed at the very end.

When installing the vapor barrier tape, subsequent plastering may be expected. In this case, the open part of the tape should be made of a material that provides the best adhesion of the insulating strip and the decorative coating to each other.

The vapor barrier tape must be glued around the perimeter of the frame in a continuous layer, without gaps. Optimal thermal insulation is facilitated by the selection of finishing materials bordering on the insulation, which have an acceptable moisture permeability in this case.

Vapor barrier accessories

In the installation of a vapor barrier, minor difficulties may arise - strip overlaps and overlaps. You can consider this not dangerous for tightness, and as a result, it is likely to get problems with heat - and vapor barrier. Therefore, when installing a sealed vapor barrier for PVC windows, additional accessories may be needed, for example, self-adhesive tape. In some cases, glue is most convenient.

If the metallized vapor barrier tape is attached to an uneven surface, then additional reinforcing effort may be required.

Self-adhesive tape can be, just like the vapor barrier sheets themselves, one - or double-sided. They are purchased, if necessary, to additionally glue the joints of the vapor barrier strips, to correct the damage to the tapes.

In the case of double overlap, adjoining the tape to wood or metal, double-sided tape is more often used. With a double overlap, i.e. connecting the strip to pipes or doors, it is more convenient to use one-sided.

Cost of 1 lin. m. vapor barrier tape on average is from 25 to 45 rubles. The price tag for additional goods, for example, double-sided tape, is quite high (up to 1400 rubles). Therefore, in the matter of their acquisition, everyone is guided by the installation process, the desired degree of confidence in the operation of the system and the possibility of spending money.

Video: the use of vapor barrier film for plastic windows

In general, vapor barrier is not considered mandatory at the moment. Its installation is often determined by the choice between reinsuring against possible unpleasant situations or saving. Some manufacturers and buyers choose a budget option that does not include vapor barrier on the windows. However, a wide range of products for vapor barrier allows you to make the most suitable choice, without losing on the safety of operation of the entire window system.