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

Vapor barrier tape is a special construction tape used to seal the seams of vapor barrier films. The use of inappropriate adhesive tape leads to its peeling 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 scotch tapes for vapor barrier, we will help you to make right choice and tell you about the nuances of editing.

All construction tapes can be classified according to structure and material. The structure is: one-sided and double-sided tape. The first is used for fastening the canvases "joint to joint", the second - "overlapping".

By the type of material, scotch tapes are of the following type:

Mounting tapes Ondutis ML and BL

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

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

Ondutis BL is a double-sided self-adhesive mounting tape on release (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 passages ( chimneys, ventilation ducts, etc.), as well as for attaching films to brick and concrete walls during installation.

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

• resistance to ultraviolet and weather conditions;
• 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 and others)
• 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 adhesion. Butyl rubber types 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 layers of vapor barrier.

Due to the fact that modern new buildings do not have high insulating properties, especially for roofs, new settlers quite often have to insulate attic rooms 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, in the process of which scotch tape will be used for vapor barrier, then fastening the film will ensure the durability of the structures.

The need to create sealed joints of the vapor barrier layer

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

If you use scotch 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 humans. If you are also concerned about the issue that is described in the article, then you need to choose a high-quality tape. It is only important to decide which company to prefer.

Purpose of the connecting tape "Izospan SL"

The Izospan vapor barrier adhesive tape is intended for gluing panels of materials and imparting moisture and vapor impermeability to the joints. When installing insulated mansard roofs These tapes are used to seal the adhesion of films to penetrating structures. These can be ventilation systems, as well as dormers.

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

Technical characteristics of the adhesive tape "Izospan SL"

The above-described vapor barrier tape has unique technical characteristics, namely, the strength of the bond with concrete at separation of 0.1 MPa. As for the bond strength 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%. The material can be used at temperatures ranging from -60 to +140 ° C. The shelf life is 12 years. Sometimes professionals find it important to penetrate at 0.1 mm. It ranges from 30 to 350.

Installation features

The described adhesive tape for vapor barrier, the purpose and installation of which is highlighted in the article, can be used for gluing horizontal and vertical joints of film materials. In this case, the latter can fit into 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 tape, while the paper must be removed from the connecting tape. In this case, the panels are pressed against each other.

When sealing the places where materials adjoin elements and structures, the tape should be glued to a hard surface like metal, brick or concrete. The release paper should be on top. The insulating film is applied to the tape, and then you can remove the paper and press the material tightly to the surface.

Features of gluing tape to material

For vapor barrier, it can also be glued to the material. For this, the 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 should only be used for sealing the joints of roll materials. Mechanical fasteners such as galvanized nails or a construction stapler should be used to secure them to structural elements. In this case, we are talking about fastening the vapor barrier to rafters, beams, frames or posts.

Purpose, area of \u200b\u200buse and advantages of polypropylene adhesive tape "Technonikol"

The Technonikol vapor barrier tape can be made of polypropylene. Moreover, 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 that is covered with adhesive on both sides. It can be used for hermetic connection of vapor barrier sheets, fastening film edges to substrates, as well as for fixing polypropylene membrane sheets.

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

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

Such tape for bonding vapor barrier can be used in residential buildings, industrial buildings and facilities in private houses, factories, shopping malls, train stations, warehouses, offices, public buildings, factories, apartments, catering facilities, in conditions industrial buildings.

Alternative self-adhesive tapes

Scotch tape for vapor barrier can be provided by products of another manufacturer, for example, Nicoband. He makes sealing tapes in various colors. Their dimensions are 100 x 10,000 mm. For one unit of goods, you will have to pay about 665 rubles. This self-adhesive tape consists of a layer of aluminum foil, the outer coating of which can have one of five colors.

The material contains a modified bitumen adhesive layer. This tape is intended for outdoor work, it is used for joints and cracks of various abutments. 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.

Installation of a vapor barrier is mandatory when building a living space. The film serves to protect the insulation from the vaporous liquid that emanates from the room into the inside of the roof of the house. A vapor barrier membrane prevents condensate (the transition of a substance from a vapor to a liquid state) to the living room.

If the vapor barrier is installed on the wrong side, the house will accumulate too much vapor. Moisture penetration 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 seams of the vapor barrier layer are sealed with the help of a special construction tape, this material will be discussed. Also will be considered general rules and the nuances of establishing a vapor barrier.

Vapor barrier tape is a bonding tape that will help ensure the vapor or water tightness of coatings or where certain parts fit together. If you use ordinary scotch tape, this will lead to its quick peeling off, and moisture will freely enter the thermal insulation layer.

Vapor barrier tape is divided into several types:

• Connecting tape made of aluminum. The thickness is on average thirty micrometers. This view does an excellent job with the task, 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 plus of the material is its low cost in the construction market. However, this adhesive tape is rarely used 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 to ensure vapor tightness. The width of the tape is five centimeters;
• Butyl rubber connecting tape. The type has excellent adhesion to the surface and adheres well to the vapor barrier layer.

Regular stationery tape is not suitable for bonding vapor barrier sheets. Literally after a short period of time (one or two days) everything will come off.

When buying a special construction tape, you should consider the following characteristics:

• this material must be highly resistant to ultraviolet rays;
• scotch tape should practically not absorb moisture;
• the ability to withstand temperatures up to 90 degrees Celsius;
• construction joint tape must have excellent adhesion to wood and metal surfaces (adhesion);
• the service life is fifteen years.

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

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

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

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

Installation of vapor barrier

There are materials specifically designed for the installation of vapor barrier with one layer of film, polyethylene, or materials with two layers. They all differ 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 subroof. If the installation is done correctly, then the accumulated moisture can go into the ventilation hole without any obstacles.

The membrane with two layers is glued with a smooth surface to the thermal insulation layer. Oftentimes, the manufacturer will even mark the side of the membrane that is needed. This greatly simplifies the work.

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

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

Remember:

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

The 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 should not have any cracks or other defects. Construction bars for lathing are treated with chemical anti-fungal agents. The film must match the entire surface perimeter.

For work you will need:

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

Phased installation:

• In the carrier system pitched roof (rafters), where the thermal insulation layer is located, it is necessary to fill the lower part of the covering, consisting of battens, with two boards. With construction special tape, you need to make a strip that will be sticky on both sides. Then you need to cut the roll to the required length. From the bottom of the lathing cover, the film should be glued to the insulation with the side where the mark is.
• It is important to glue the ends of the vapor barrier sheets to the pitched roof supporting system. This connection is made using a construction stapler. The bottom of the membrane is glued to the crate. Having stepped 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, you need to glue the appropriate number of rows. The sealed film should be secured with beams. The bars can be secured with screws. Remember to leave an air vent between the ridge and the eaves.

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

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 outside is on the street.

To properly install the vapor barrier layer, you must:

• carefully fasten it with the right side to the covering, consisting of purlins, because the surface can be damaged;
• it is important to carefully close all possible surface defects (cracks, holes, etc.);
• it is necessary to carry out the installation of the lathing using beams to create ventilation;
• the overall structure can be covered with decorative wall panels.

Today, there are many films for creating a vapor barrier. But the best membrane is Ondutis. This material is excellent for protecting the insulating layer and the roof from the destructive effects of condensation.

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

Output

As you can find out from this article, gluing vapor barrier sheets requires some care and accuracy from you. The main construction tool is a special adhesive tape. 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 from dust and dirt, as well as treating it with chemical anti-fungal agents. Vapor barrier is installed in several layers. Remember to leave holes for vaporous liquid to escape during operation.

When buying additional materials, do not spare your money, since in the future the comfort and coziness in your home depends on it. Vapor barrier glue is also an excellent material. The entire procedure can be carried out independently, but it is better to trust the professionals, because the work is rather complicated and takes a long period of time. Experts will make the installation efficiently, and you will not have to think about any problems.

Scotch tape ML is a double-sided self-adhesive tape made of synthetic rubber. It has good adhesion for a long service life and guarantees a reliable vapor-air tight connection.

DELTA FLEXX-BAND F100

DELTA FLEXX-BAND F100 is a flexible one-sided bitumen-rubber adhesive tape with high adhesion on a high-strength nonwoven tape for sealing elements passing through the roof.

Scotch tape DELTA INSIDE-BAND I 60

Scotch tape DELTA INSIDE-BAND I 60 Universal single-sided tape with high adhesion force for tight connection of vapor barrier films in the overlap zone on the front side. It can be used for adjoining films to metal, hard plastic, smooth wood.

The best tapes and tapes for vapor waterproofing

The main purpose of tapes and tapes for vapor barrier, waterproofing is a tight connection of films in overlap areas. Thus, a sealed vapor barrier is created between the vapor-waterproofing and the walls passing ventilation pipes through the roof, by various abutments, fixing to the Mauerlat or any other roof structures.

Double-sided tapes, tapes for various membranes, as a rule, guarantee the quality of the 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 in the places of nail fasteners.

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

Price for adhesive tapes and sealing tapes

The price of scotch tapes is different, it differs from each other by manufacturers, as well as roll width and length. Scotch 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 hydro-vapor barrier connection.

Video instruction of adhesive tape Delta® multi-band М60

Video instruction Sealing tape Delta® schaum-band SB 60

Video instruction of Delta flexx-band F100 abutment tape

The technology of laying the vapor barrier layer provides for gluing the canvases together. In modern construction, special 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 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 penetration from residential premises. The film itself does an excellent job, but fumes can penetrate through the joints of the sheets. To do this, each joint is insulated with special tape.

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

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

It is necessary to glue the joints of the vapor barrier layer when building a new house or overhaul roofs. And it is also recommended to check the quality of the roofing cake when buying a house, whether it is old or modern building... Scotch tape may eventually come off from old age or due to poor-quality conduction installation works... In such a situation, you have to undertake repairs and here it is important to choose the right type of adhesive tape and the manufacturer's company.

Varieties of scotch 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 butt-end, and double-sided - for overlapping canvases. Secondly, there is a wide variety in materials than to glue the film from which the docking tapes are made:

1. Aluminum. Scotch 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 provides sufficient strength for work. This option is not suitable for all types of vapor control.
2. Reinforced aluminum... Here 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 because of the high probability of peeling.
4. PTL tape. Consists of several layers: plastic film on the outside, fabric in the center and rubber-based glue on the working side. Quite rare scotch tape 200 microns thick.
5. Butyl rubber... Most suitable option for connecting the vapor barrier material to each other. Suitable for most materials. Has a width of 15 to 50 mm.

Connecting 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 of the 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 the hydro and vapor barrier. It has been designed to seal the junction of protective films to structures passing through the roofing pie attic floor... For example, it is used near chimneys, pipes and ventilation ducts or dormers.

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

Concerning technical characteristics, then the most important information concerns adhesion strength. If we talk about the connection with concrete, then the tensile strength is 0.1 MPa. But it is not recommended to glue to metal surfaces, since adhesion decreases tenfold.

The water absorption of the adhesive tape is equal to 0.2%, which is an excellent result when compared with roofing felt, in which the indicator fluctuates within 2%. The working 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 suitable only for overlapping vapor barrier installation. To do this, the 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 tape has work surfaces on both sides. The base 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.

The Technonikol adhesive tape is intended only for gluing vapor barrier rolls. It cannot be used when sealing film adjoins 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 area of \u200b\u200bapplication differs, the surfaces to which the adhesive tape can be glued. So, ML is a tape with an adhesive on both sides of the fabric base. The role of the joint compound is synthetic rubber, which is distinguished by its strength and reliability. It is produced in rolls 50 mm wide and 25 meters long. Designed for bonding vapor barriers in roofing cakes and walls.

Ondutis BL also has two adhesive sides, one of which is covered with non-sticky paper. It is used to seal joints of vapor barrier with hard surfaces. They are used to process connections with brick, concrete and wooden walls... In addition, it can be used as an attachment to concrete walls.

Nicoband

A more expensive option for vapor barrier tape, which has an aluminum base and two adhesive surfaces. The tape has several color options and is produced 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 for sealing external seams. It is able to bond the insulating film firmly to plaster, wood, metal, roofing and concrete. The manufacturer gives a guarantee of a tight connection for 10 years.

Scotch selection criteria

Remember that stationery tape is definitely not suitable for gluing vapor barrier films. It is not designed to firmly bond to rough surfaces, so it falls off after a few hours. Even if it seems that it stuck reliably, keep in mind that the manufacturer did not count on using his tape in frosty conditions.

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

• if it is planned to use it outdoors, then the tape must withstand ultraviolet radiation and precipitation;
• the level of water absorption should not exceed 0.2%;
• it is important that the working 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 10 years.