How to glue the vapor barrier: useful tips. How to glue vapor barrier: useful tips Double-sided adhesive tape for roofing

Vapor barrier tape is a special construction tape that is used to seal the seams of vapor barrier films. Using the wrong adhesive tape leads to its peeling off and moisture ingress into the insulation. As a result, the house loses its thermal insulation properties.

In this article, we will consider the main types of adhesive tape for vapor barrier, we will help to make right choice and tell you about the nuances of installation.

All construction tapes can be divided by structure and material. The structure is: single-sided and double-sided tape. The first is used for fastening the sheets "butt-to-butt", the second - "overlap".

According to the type of material, adhesive tapes are of the following type:

Mounting tapes Ondutis ML and BL

Ondutis ML is a double-sided self-adhesive fabric-based tape. Synthetic rubber, which is part of Ondutis ML, provides a reliable connection for 15 years. Adhesive tape is used for mounting vapor barrier on ceilings, roofs and walls. Standard Width- 50mm. Harmless and non-toxic.

Ondutis ML is used as a universal mounting and sealing tape when installing vapor barrier and roofing films on building envelopes. It is used for hermetic gluing of joints of vapor barrier films on walls, roofs and ceilings.

Ondutis BL is a double-sided self-adhesive mounting tape on anti-adhesive (non-sticky) paper. The tape provides a reliable vapor-air-tight connection for 15 years. One package contains two rolls of 25 m.

Ondutis BL is used for sealing joints to solid surfaces (concrete, brick, wood) and roof penetrations ( chimneys, ventilation ducts, etc.), as well as for attaching films to brick and concrete walls during installation.

The main rule to remember is that ordinary stationery tape is not suitable for gluing vapor barrier sheets. Due to the roughness of the outer side of the film, it will fall off literally the next day. When choosing adhesive tape, the following properties should be considered:

• resistance to ultraviolet and atmospheric phenomena;
• low level of moisture absorption (0-0.2%);
• operating temperature (ranges from -40 to + 75-80 ⁰С);
• adhesion to a certain group of materials (film, metal, wood, concrete, etc.)
• service life (15 years or more).

It is not recommended to buy products from unknown manufacturers. Firstly, they can be toxic, and secondly, no one guarantees the quality of bonding. Butyl rubber varieties of construction tapes are better suited for vapor barrier.

The choice of building materials for modern market huge. A new product is vapor barrier tape, but despite this, it has already gained popularity among consumers. The material is used for fixing and arranging sealed joints between vapor barrier layers.

Due to the fact that modern new buildings do not have high insulating properties, which is especially true for roofs, new settlers quite often have to insulate attics and attics. Poor vapor barrier manifests itself in the form of condensation, as well as an unfavorable indoor climate. If you equip it with high quality, during which adhesive tape for vapor barrier will be used, then fixing the film will ensure the durability of the structures.

The need to create sealed joints of the vapor barrier layer

A vapor barrier layer is laid on the inside of the room, which prevents the penetration of moisture from utility and residential premises into the thermal insulation layer. If the vapor barrier has an airtight layer, which is provided thanks to a special adhesive tape, then it will retain warm air and prevent the penetration of cold masses from the street.

If you use adhesive tape for vapor barrier, this will help restore the microclimate in the house, preventing excessive dryness of the air, because cold masses from the street have a relative humidity that is less than that which is comfortable for a person. If you are also concerned about the issue that is described in the article, then you need to choose a quality tape. It is only important to decide which company to prefer.

The purpose of the connecting tape "Izospan SL"

Adhesive tape for vapor barrier "Izospan" is intended for gluing panels of materials and making joints moisture and vapor impermeable. When installing insulated mansard roofs These tapes are used to seal the joints of films to penetrating structures. It can be ventilation systems, as well as roof windows.

"Izospan SL" is used to ensure the tightness of the junction of the protective film. This includes ceiling vapor barrier, which is adjacent to the walls of the insulated attic floor.

Technical characteristics of adhesive tape "Izospan SL"

The above-described adhesive tape for vapor barrier has unique technical characteristics, namely, the bond strength with concrete at a detachment of 0.1 MPa. As for the strength of the bond with the metal when peeling, it is 0.15 kgf/cm or more.

You may also be interested in water absorption. In the case of this tape, it does not exceed 0.2%. It is possible to use material at the temperature range from -60 to +140 °C. The shelf life is 12 years. Sometimes penetration at 0.1 mm is important for professionals. It varies from 30 to 350.

Mounting Features

The described adhesive tape for vapor barrier, the purpose and installation of which is covered in the article, can be used for gluing horizontal and vertical joints of film materials. At the same time, the latter can be placed in wall and roof structures. The tape must be glued to the edge of the reinforced panel, placing the release paper on top. Next, the next canvas is laid with an overlap and fixed with adhesive tape, while you need to remove the paper from the connecting tape. In this case, the panels are pressed against each other.

When sealing the junction of materials to elements and structures, the tape should be glued to a hard surface like metal, brick or concrete. Release paper should be on top. The insulating film is superimposed on the tape, and then you can remove the paper and press the material firmly to the surface.

Features of gluing the tape on the material

For vapor barrier, it can also be glued to the material. To do this, release paper is removed from it so that the adhesive layer is exposed. The roll is placed on the material and rolled out with light pressure. The recommended distance must be retreated from the edge of the panel.

The connecting tape must be used exclusively for sealing the joints of rolled materials. To fix them on structural elements, mechanical fasteners such as galvanized nails or a construction stapler should be used. In this case, we are talking about fastening the vapor barrier to rafters, beams, frames or racks.

Purpose, scope and advantages of polypropylene adhesive tape "TechnoNIKOL"

Adhesive tape for vapor barrier "TechnoNIKOL" can be made of polypropylene. At the same time, its dimensions are 38 mm x 25 m. For one unit of goods, you will have to pay about 155 rubles. This material is a polypropylene layer, which is coated with adhesive on both sides. It can be used for hermetic connection of vapor barrier sheets, fastening film edges to bases, as well as for fixing polypropylene membrane sheets.

The advantages of this type of product are the following indicators:

• reliable connection of products;
• resistance to water;
• the ability to seal seams and joints;
• ease of use;
• the ability to create a moisture barrier.

This adhesive tape for gluing vapor barrier can be used in residential buildings, industrial buildings and facilities in private homes, factories, shopping malls, railway stations, warehouses, offices, public buildings, factories, apartments, facilities Catering, in industrial buildings.

Alternative adhesive tapes

Vapor barrier tape can be provided by products from another manufacturer, for example, Nicoband. He makes tapes for sealing in different colors. Their dimensions are 100 x 10000 mm. For one unit of goods you will have to pay approximately 665 rubles. Such a self-adhesive tape consists of a layer of aluminum foil, the outer coating of which can have one of five color options.

The material contains an adhesive layer of modified bitumen. This tape is intended for outdoor work, used for joints and cracks of various junctions. This double-sided vapor barrier tape has excellent adhesion to roofing materials, plaster, wood, metal and concrete. The service life of the tape is 10 years.

The installation of a vapor barrier layer is mandatory when building a dwelling. The film serves to protect the insulation from the vaporous liquid that comes from the room into the inside of the roof of the house. The vapor barrier membrane prevents the penetration of condensate (the transition of a substance from a vapor to a liquid state) into the living room.

If the vapor barrier is installed on the wrong side, the house will accumulate too much vapor. The penetration of moisture under the roof will not be controlled. The insulation will absorb a large amount of water over time and lose its thermal insulation characteristics, and gradually the wall or ceiling coverings will be destroyed. This article will consider the issue of gluing vapor barrier sheets.

Since the sealing of the joints of the vapor barrier layer occurs with the help of special construction tape, this material will be discussed. Will also be considered general rules and the nuances of establishing a vapor barrier.

Vapor barrier tape is a bonding tape that will help to seal vapor or water tight coatings or areas where certain parts fit together. If you use ordinary adhesive tape, this will lead to its quick peeling off, and moisture will freely enter the heat-insulating layer.

Vapor barrier tape is divided into several types:

• Connecting tape made of aluminium. The thickness averages thirty micrometers. This type copes with the task perfectly, but it is not suitable for all types of vapor barrier. The width of the aluminum tape is approximately ten centimeters;
• Reinforced tape. This construction connecting tape differs from the previous one in great strength, the width is about the same;
• Polypropylene construction tape. The main advantage of the material is its low cost in the construction market. However, this adhesive tape is rarely used by anyone when gluing vapor barrier sheets, since it has low strength;
• Universal reinforced adhesive tape. The basis of this type of tape is fabric. And the base of the glue is rubber. Very rarely used for vapor tightness. Tape width - five centimeters;
• Butyl rubber joint tape. The type has excellent adhesion to the surface and adheres well to the vapor barrier layer.

Ordinary clerical connecting tape is not suitable for gluing vapor barrier sheets. Literally after a short period of time (one or two days) everything will peel off.

When buying a special construction adhesive tape, the following characteristics should be considered:

• this material must have high resistance to ultraviolet rays;
• adhesive tape should practically not absorb moisture;
• the ability to withstand temperatures up to 90 degrees Celsius;
• construction bonding tape must have excellent adhesion to wood and metal surfaces (adhesion);
• service life - fifteen years.

It is not recommended to purchase a connecting tape from an unknown company at the construction market or store. The material from which the adhesive tape can be made is capable of releasing toxins, which can harm the human body. Also, there is no guarantee of quality.

The vapor barrier web should be glued first with double-sided tape, and then the second layer with one-sided tape.

While working with special tape, you must follow a certain algorithm of actions:

• first you need to clean the surface of dust and other dirt, and then dry it;
• the lowest layer of vapor barrier is installed on the coating, it is sealed with a special connecting tape along the entire length and width;
• then we get rid of the film from the top of the adhesive tape;
• at the end, the second layer is installed, it must be pressed tightly and sealed.

Vapor barrier installation

There are materials specifically designed to establish a vapor barrier with a single layer of film, polyethylene, or materials with two layers. All of them are different from each other, so the question arises: “which side to glue the vapor barrier layer?”.

BOPP (Polypropylene Biaxially Oriented Film) is glued with the rough side to the underlayment. If the installation is done correctly, then the accumulated moisture will be able to go into the vent without any obstacles.

The membrane with two layers is glued with a smooth surface to the heat-insulating layer. Often, the manufacturer will even make a note on the correct side of the membrane. This greatly simplifies the work.

Polypropylene with a one-sided laminated coating, as well as the previous material, is glued with a smooth surface.

Of course everything Construction Materials, intended for installing a vapor barrier, differ from each other, so it is best to read the proposed instructions, or consult with the seller of the hardware store.

It should be remembered:

• if the membrane is painted in different colors, it must be glued to the insulation with a lighter side;
• usually the desired side of the film, which needs to be glued to the surface of the vapor barrier layer, is the inner side.

Main stages of work

When installing a vapor barrier layer, there is a specific algorithm of actions. This layer is placed after thermal insulation. The insulation must not have any cracks or other defects. Construction bars for crates are treated with chemical antifungal agents. The film must coincide with the entire perimeter of the surface.

For work you will need:

• pencil;
• construction stapler;
• screws;
• screwdriver (an ordinary screwdriver will do);
• tape measure;
• scissors;
• construction knife;
• one-sided adhesive tape (necessary for connecting various joints), as well as double-sided adhesive tape (needed for gluing vapor barrier sheets).

Step by step installation:

• In carrier system pitched roof(rafters), where the heat-insulating layer is located, it is necessary to fill the lower part of the coating, consisting of purlins, with two boards. With construction special adhesive tape, it is necessary to make a strip that will be adhesive on both sides. Then you need to cut the roll of the required length. From the bottom of the covering of purlins, the film should be glued onto the insulation on the side where the mark is located.
• It is important to glue the ends of the vapor barrier sheets to the supporting system of the pitched roof. This connection is made using a construction stapler. The bottom of the membrane is glued to the crate. Stepping back twenty centimeters from the top, you need to stick the next strip, while not tearing off the previous layer, intended for protection.
• Following this algorithm, it is necessary to glue the appropriate number of rows. The sealed film should be fixed with bars. The bars can be fixed with screws. Remember to leave a vent hole between the ridge and the roof eaves.

Throughout the work, it is necessary to monitor the integrity of the structure. If any vapor barrier sheet has been damaged, it must be urgently replaced with another one.

Features of installing a vapor barrier

Installation of vapor barrier on the walls of the room occurs if only the insulation has a mineral base, and the outer side is on the street.

To properly install the vapor barrier layer, you must:

• with the right side, carefully fix it on the covering, consisting of purlins, because the surface can be damaged;
• it is important to carefully close all possible surface defects (slots, holes, etc.);
• it is necessary to carry out the installation of the crate with the help of bars to create ventilation;
• the overall structure can be covered with decorative wall panels.

To date, there are many films to create a vapor barrier. But the best membrane is Ondutis. This material is excellent for protecting the heat-insulating layer and the roof from the destructive effects of condensate.

The main advantage of Ondutis is that it is suitable for absolutely any structure (walls, ceiling, floors, roofs and other places). Membrane Ondutis is a polymer sheet gray color. This material is especially valuable in winter period time. Ondutis is the protection of your premises from wind, moisture and steam.

Conclusion

As you could learn from this article, gluing vapor barrier sheets requires you to have some care and accuracy. Main construction tool is a special adhesive tape. It is necessary to fasten the film with the side where the marking is located (but do not forget to read the instructions before buying).

Before installing the vapor barrier layer, the surface must be prepared by first cleaning it of dust and dirt, and also by treating it with chemical antifungal agents. The vapor barrier is installed in several layers. During operation, do not forget to leave holes for the release of vaporous liquid.

When buying additional materials, do not feel sorry for your Money, because in the future the comfort and coziness in your home depends on it. Also an excellent material is glue for vapor barrier. The whole procedure can be carried out on your own, but it is better to trust professionals, because the work is quite complicated and takes a long time. Experts will make installation qualitatively, and you should not think of any problems.

Adhesive tape ML is a double-sided self-adhesive tape based on synthetic rubber. It has good adhesion and for a long service life, and also guarantees a reliable vapor-air-tight connection.

DELTA FLEXX-BAND F100

DELTA FLEXX-BAND F100 is an elastic one-sided bitumen-rubber adhesive tape with high adhesive strength on a high-strength non-woven tape for sealing elements passing through the roof.

Tape DELTA INSIDE-BAND I 60

DELTA INSIDE-BAND I 60 tape high strength adhesive for hermetic connection of vapor barrier films in the overlap zone on the front side. Can be used to bond films to metal, hard plastics, smooth wood.

The best tapes and adhesive tapes for vapor-waterproofing

The main purpose of adhesive tapes and tapes for vapor barrier, waterproofing is a tight connection of films in places of overlap. This creates a sealed vapor barrier between the vapor barrier and the walls passing ventilation pipes through the roof, various connections, fixing to the Mauerlat or any other roof structure.

Double-sided adhesive tapes, tapes for various membranes, as a rule, guarantee the quality of work carried out with vapor barrier and waterproofing. It is also necessary to think over the connection of the counter-lattice with the films; for this, a special sealing tape is provided, which ensures a tight connection at the places of nail fastenings.

Often the roofing film is fixed with a mounting stapler and this is where it all ends, but on a roof with a small slope this is a gross violation that will lead to the leakage of vapors and condensate. You can buy double-sided tape or vapor barrier tape at any roofing store or order it through an online store, which will completely create a high-quality vapor barrier.

The price of adhesive tapes and sealing tapes

The price of adhesive tapes is different, it differs from each other by manufacturers, as well as the width of the roll and the length. Adhesive tapes, tapes create an excellent vapor-tight seal of the vapor barrier overlap, hydro-wind protection to create a durable roofing pie structure. These are inexpensive roofing accessories that are not worth saving on. We have collected for you the best and most trusted manufacturers sealing tapes and tapes sealing the connection of the hydro-vapor barrier.

Video instructions for Delta® multi-band M60 tape

Video instruction sealing tape Delta® schaum-band SB 60

Video instruction tape for adjoining Delta flexx-band F100

The technology of laying the vapor barrier layer provides for gluing the sheets together. In modern construction, special adhesive tape is used for these purposes. If you choose a simple stationery material, then there is a threat of moisture getting into the insulation. Since there is a large amount of adhesive tape in stores, let's figure out how to glue the vapor barrier.

The vapor barrier film is laid on the inside of the room, under the thermal insulation. Its task is to protect thermal insulation from moisture from residential premises. The film itself does an excellent job, but vapors can enter through the joints of the sheets. To do this, each joint is isolated with a special adhesive tape.

If the joints are not sealed, moisture will penetrate to the insulation, due to which it will begin to lose its insulating properties. Wet mineral wool protects against cold 60% worse than dry.

In addition, when gluing the vapor barrier in the house itself, a comfortable humidity and microclimate are maintained. This is because the insulation absorbs vapor from the air and makes it drier. Due to the lack of water, problems with the health of the skin and respiratory tract can begin.

It is necessary to glue the joints of the vapor barrier layer during the new construction of a house or overhaul roofs. And it is also recommended to check the quality of the roofing cake when buying a house, whether old or modern building. Adhesive tape may peel off over time due to old age or due to poor quality installation work. In such a situation, you have to take on repairs, and here it is important to choose the right type of adhesive tape and the manufacturer.

Varieties of adhesive tape

Construction tapes have two factors by which they can be distinguished. First, there are different structural solutions. They produce one-sided adhesive tape, for gluing the vapor barrier end-to-end, and two-sided - for mounting overlapping cloths. Secondly, there is a wide variety in materials than to glue the film from which the docking tapes are made:

1. Aluminum . Adhesive tape 50-100 mm wide, consisting of a layer of aluminum, protective paper and glue. The thickness of the metal in the film is not more than 40 microns, but it gives sufficient strength for work. This option is not suitable for all types of vapor barrier.
2. Reinforced aluminum. It adds a reinforcing layer that increases the strength of the material. The width remains the same as in the previous version.
3. polypropylene. Most a budget option for gluing, which can be found in any store. Usually the width does not exceed 50 mm, and the thickness is 100 microns. Not recommended for use in construction due to high peeling potential.
4. Tape PTL. It consists of several layers: polyethylene film on the outside, fabric in the center and rubber-based adhesive on the working side. Quite a rare adhesive tape 200 microns thick.
5. Butyl rubber. Most suitable option for connecting vapor barrier material to each other. Suitable for most materials. Has a width of 15 to 50 mm.

Adhesive tape brands

In order to choose the appropriate option, it is not enough to know only the technical characteristics or the material of the adhesive tape. Coming to the store, you already need to know the brand of adhesive tape and call it to the manager. Below we will analyze some popular options, based on this information, you can decide exactly what is right for your tasks.

Izospan SL

This tape is used simultaneously to seal the joints of hydro and vapor barrier. It was designed to seal the joints of protective films to structures passing through the roofing cake. attic floor. For example, it is used near chimneys, pipes and ventilation ducts or skylights.

In addition, its working surface is perfectly glued to the walls and provides a reliable, tight connection. Therefore, Izospan SL tape is used to process the edges of the vapor barrier layer in the attic.

Concerning specifications, then here the most important information regarding bond strength. If we talk about the connection with concrete, then the tear strength is 0.1 MPa. But gluing to metal surfaces is not recommended, since adhesion decreases tenfold.

The water absorption of adhesive tape is 0.2%, which is an excellent result when compared with roofing felt, in which the indicator fluctuates within 2%. The operating temperature is between -60 and + 140 °C. This tape is suitable for use in any area.

Izospan SL belongs to the group of double-sided adhesive tapes, therefore it is only suitable for overlapping vapor barrier installation. To do this, adhesive tape is glued to the edge of the first roll, then the release paper is removed and the second roll is applied.

TechnoNIKOL

This adhesive tape has working surfaces on both sides. The basis for the tape is polypropylene, but despite this, the material performs its functions perfectly. The length of one roll is 25 meters, and the width is 3.8 cm. Due to the low cost, about $ 3 per piece, you can save on insulation without losing quality.

TechnoNIKOL adhesive tape is intended only for gluing vapor barrier rolls. It can not be used for sealing the adjunctions of the film to load-bearing structures. Most often it is used in residential private construction and industrial buildings.

Ondutis ML and BL

The mounting tape is designed for a service life of up to 15 years. Depending on the marking, the scope, surfaces to which adhesive tape can be glued differ. So, ML is a tape with an adhesive on both sides of the fabric base. Synthetic rubber, which is durable and reliable, acts as a connecting compound. It is produced in rolls 50 mm wide and 25 meters long. Designed for gluing vapor barrier in roofing pies and walls.

Ondutis BL also has two adhesive sides, one of which is covered with non-sticky paper. Used to seal vapor barrier joints with solid surfaces. They process connections with brick, concrete and wooden walls. In addition, it can be used in the role of fastening the film to concrete walls.

Nicoband

A more expensive version of vapor barrier tape, which has an aluminum base and two adhesive surfaces. The tape has several color options and is available in rolls 10 meters long and 100 mm thick. The cost of this option is $ 11, which is explained by the scope.

Nicoband mounting tape is used to seal external seams. It is able to firmly bond the insulation film to plaster, wood, metal, roofing and concrete. The manufacturer gives a 10-year guarantee for tight connections.

Adhesive tape selection criteria

Remember that stationery tape is definitely not suitable for gluing a vapor barrier film. It is not designed for a strong connection with rough surfaces, so it falls off after a few hours. Even if it seems that it is firmly stuck, keep in mind that the manufacturer did not count on the operation of his adhesive tape in frosty conditions.

When choosing a mounting tape, pay attention to the following factors:

• if you plan to use it outdoors, then the adhesive tape must withstand ultraviolet radiation and precipitation;
• the level of water absorption should not exceed 0.2%;
• it is important that the operating temperature coincides with the climatic zone;
• choose tape for specific jobs, either for sealing the film or for bonding to hard surfaces;
• minimum service life of 10 years.