Vapor barrier tape: a comparative overview of connecting tapes. Scotch tapes, Adhesives and Sealing tapes for roofing and renovation works, DELTA, TYVEK and others Double-sided tape for vapor barrier

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 from entering (the transition of a substance from a vapor state to a liquid) into 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 soon peeling off, and moisture will freely enter the heat-insulating layer.

Vapor barrier tape is divided into several types:

Connecting tape made of aluminum. The thickness is on average thirty micrometers. This type 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. It is used very rarely to ensure vapor impermeability. 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 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, which can harm the human body. And also there is no quality guarantee.

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

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 layer of vapor barrier 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 installing 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 will be able to escape into the ventilation hole without any obstruction.

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 read 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, which you want to glue the surface of the vapor barrier layer - the inner one.

The main stages of work

When installing a vapor barrier layer, there is a specific algorithm of actions. This layer is placed after the 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 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 tape (needed to connect various joints), as well as double-sided tape (needed for gluing vapor barrier sheets).

Phased installation:

In the supporting system of the pitched roof (rafters), where the heat-insulating 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 located.
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 battens, 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 crate with the help of 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 thermal insulation layer and the roof from the destructive effects of condensation.

The main advantage of Ondutis is that it is suitable for absolutely any construction (walls, ceiling, floor slabs, roof and other places). Membrane Ondutis is a gray polymer sheet. This material is especially valuable in winter period time. Ondutis protects 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 by treating it with chemical antifungal agents. The vapor barrier is installed in several layers. Remember to leave holes for the vaporous liquid to escape during operation.

When buying additional materials, you do not need to 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.

The arrangement of waterproofing must be treated as responsibly as the choice of roofing. Vapor barrier tape is a special construction tape used to seal the joint seams of vapor barrier films. If an unsuitable or low-quality adhesive tape is used for these purposes, it peels off from the film, the seams lose their tightness, and moisture freely enters the insulation. As a result, in housing construction, thermal insulation properties are reduced or lost.

Types of tapes for bonding vapor barrier films

All special tapes used to connect vapor barrier films differ in their structure and differ in the materials from which they are made. Structurally, they are one- and two-sided. The first ones are used for attaching strips of the vapor barrier film "joint to joint", and the second ones - for attaching the vapor barrier "overlap".

Buy adhesive tape for vapor barrier from various materials can be of the following types:

Aluminum tape - is a layered building material consisting of protective paper, aluminum tape (20-40 microns thick) and an adhesive layer. This type of tape with a tape width of 5-10 cm holds vapor barrier films well, but it cannot be used with all their varieties.
Reinforced tape with aluminum - differs from the standard tape with an aluminum layer in increased strength, due to the placement of a reinforcing layer inside it. Width 5-10 cm.
Polypropylene is the cheapest and most readily available type of tape. You can buy scotch tape for vapor barrier in almost every hardware store... However, such a tape has a serious drawback - insufficient reliability of the seam for fastening vapor barrier films. Such tape is usually produced with a width of 5.0 cm, and a thickness of 20-100 microns.
In TPL tape, the polyethylene coating on the outside is combined with a fabric backing and a rubber adhesive layer. For example, such adhesive tape is rarely used to seal the joints of TechnoNIKOL vapor barrier. The thickness of the TPL tape is 200 microns, and the width is 5 cm.
Butyl rubber tape has good adhesion and adheres perfectly to the vapor barrier surface. The width of this type of tape is 1.5-5.0 cm.

Mounting tapes Ondutis

Ondutis ML is a double-sided self-adhesive tape with a fabric backing. The artificial rubber included in its composition provides a stable and reliable connection up to 15 years old. Such an adhesive tape, 5 cm wide, is used during the installation of vapor barrier films on the walls, ceilings and the roof itself; it is non-toxic and safe. Ondutis ML is used as a sealing tape (universal) when placing films - roofing and vapor barrier, on the protective elements of buildings. It is used for sealing (gluing) the seams of vapor barrier films.

Ondutis BL - double-sided tape with non-adhesive (anti-adhesive) paper backing. This tape provides a stable air and vapor tight connection for up to fifteen years. Comes on sale in 2 rolls of 25 meters long (each). This BL tape is used for sealing various joints to wood, concrete, brick and other roof passages (for example, pipes for various purposes, ventilation ducts), as well as for attaching films to brick or concrete walls.

Fixation of film vapor barrier building materials

The main tier of the film vapor barrier is placed along the roof cornice, observing the sagging required for installation relative to the rafters at a level of 1-2 cm.

It is important to correctly form the space between the rafters so that it does not exceed 1.20 m.

In addition, you need to ensure that the size of the air gap between the heat-insulating elements and the waterproofing film is about 4 cm.

The placement of the waterproofing layer is carried out horizontally - from the eaves to the ridge beam, with a mandatory overlap of 10-15 cm.The maximum value of the sagging of the waterproofing film in relation to the rafters is strictly observed and should not exceed 2 cm.

The edges of the insulation are overlapped, with the obligatory gluing of the seams using the appropriate tape, glue or tape.

The vapor barrier film is fixed over its entire surface with a stapler. It is allowed to use for fastening nails with a galvanized surface.

It is important that the hardware used for fastening has a wide upper part that prevents damage to the insulation building material.

Each next piece of film is placed with an overlap of the previous one by 20 cm, and this value changes, depending on the value of the roof slope.

Counter-lattice bars are placed on top of the waterproofing coating. The minimum value of the cross-section of the bars should be within 4 * 2.5 cm, with a placement interval of 10-15 cm. Then the installation of the lathing structure is carried out.

In the upper part of the roof between the ridge beam and the waterproofing film, a gap of up to 5 cm is made.It is necessary to make a ridge ventilation or rupture of the waterproofing coating under a certain part of the roof covering, which will ensure sufficient ventilation of this hidden gap.

At the points of attachment to the roof of various pipes, masts or antennas, film insulators are cut and glued to the nearest parts of the lathing structure. For these purposes, either vapor barrier tape or self-adhesive (double-sided) tape is used. If dormers are placed on the roof, to perform their waterproofing, you must adhere to the recommendations of the manufacturers of such windows.

It is important when laying a perforated membrane waterproofing agent to observe the correct placement of the vapor barrier side, laying the perforation on the outside. Otherwise, there is a likelihood of moisture entering the under-roof space and thermal insulation, accumulation of condensate and steam inside, which will lead to rotting of roof parts and the appearance of leaks.

How to choose and buy an adhesive tape for vapor barrier correctly

It is necessary to remember the basic rule - ordinary scotch tape is not used for gluing the seams of canvases of vapor barrier films. Most of these insulating films have a rough outer surface, so the tape will come off almost immediately after gluing. When choosing the type of adhesive tape, you must take into account its following characteristics:

resistance to ultraviolet radiation and various natural phenomena;
low moisture absorption rate (up to 0.2%);
operating temperature range (in the range from -40 - + 80C);
adhesion resistance with certain types of building materials (metals, wood, concrete, films)
long service life (up to 15 years or more).

Important: do not purchase scotch tapes and tapes for gluing vapor barrier joints from unknown manufacturers. These tapes can be hazardous to health and the environment(often even toxic).

In addition, these tapes cannot guarantee the desired bonding quality. Various types of butyl rubber construction tapes are best suited for vapor barriers.

To increase the reliability of the connection of the vapor barrier sheets, the double gluing technique is used. First, the canvases are glued to each other "overlapping" using double-sided tape, and then the resulting seam is reinforced by gluing it with one-sided.

Installation of vapor barrier tape consists of the following steps:

Preparation of the glued surfaces of the films - they must be cleaned, dried and necessarily degreased.
The bottom sheet of the vapor barrier film is placed on the prepared base. Scotch tape is glued along the perimeter of the entire canvas.
The protective film is removed from the upper surface of the tape.
On the first canvas, the "overlap" is placed the second canvas, and the place where the seam is formed is clamped as tightly as possible.
Then the edges are glued with tape.

Important: in order to ensure the best quality of the joint, the joints must be sealed at the optimum temperature and humidity values.

What scotch tape for vapor barrier to buy and how not to make a mistake with the choice - video

Vapor barrier tape is a special construction tape that is used to seal the seams of vapor barrier films. The use of an unsuitable 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.

Types of adhesive tapes for vapor barrier

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".

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

Aluminum tape	a kind of sandwich made of aluminum tape (thickness 20-40 microns), protective paper and an adhesive layer. It copes well with its main task, but is not suitable for all types of films. Typical belt width - 50-100 mm
Reinforced aluminum tape	differs from ordinary aluminum tape in greater strength due to the presence of a reinforcing layer. Width 50-100 mm
Polypropylene tape	inexpensive. Sold in any store. The disadvantages of this tape include its low reliability when gluing vapor barrier films. The width is about 50 mm, and the thickness is 20-100 microns.
TPL tape	The fabric backing is combined with a rubber backing adhesive and a polyethylene coating on the outside. They are rarely used for sealing joints. 200 microns thick, 50 mm wide.
Butyl rubber tape	possesses good adhesion and adheres perfectly to the vapor barrier. Width 15-50 mm

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 for the installation of vapor barrier on ceilings, roofs and walls. The standard width is 50mm. Harmless and non-toxic.

Ondutis ML is used as a universal assembly and sealing tape when installing vapor barrier and 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.

How to choose and buy the right vapor barrier tape

The main rule should be remembered - 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 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.

To provide reliable protection from the effects of moisture and steam, you should take a responsible approach to the installation of the roofing cake, select the necessary waterproofing components, including glue, tape or vapor barrier tape and some other components. The protection performed must fully meet all the stated requirements. It is recommended to approach its implementation no less responsibly than to the selection of roof coatings. An important role is played by the installation of vapor barrier films and waterproofing membranes, which will be discussed below.

Fixation of film materials

The main tier of the film is laid along the entire eaves of the roof, observing the required sagging relative to the rafters at the level of 10-20mm. Experts advise creating a space between adjacent rafters no more than 120cm. It should be noted that the height of the air gap of the thermal insulation components and the waterproofing film should be about 40mm.

The very laying of the waterproofing is done in a horizontal direction, starting from the eaves and reaching the ridge, observing an overlap of 100..150mm. The maximum sag of the film relative to the rafters should be no more than 20mm. The connection of the edges of the insulation is performed with an overlap, with the obligatory gluing of the joints by means of an appropriate tape, tape or glue.

Over the entire working surface, the vapor barrier film is fixed with a construction stapler. The use of galvanized nails is allowed. It is important that the hardware has a wide head, which will not damage the material.

Each subsequent row of film material is laid with an overlap of up to 200 mm, and this value fluctuates, depending on the slope of the roof.

On top of the waterproofing, counter-lattice bars are installed, while their minimum section should be at least 40 * 25mm, with an arrangement interval of 100-150mm. Next, the installation of the lathing is done.

In the ridge part of the roof, a gap of up to 50 mm is guaranteed between the corresponding axis and the waterproofing membrane. It is necessary to perform a ridge vent, which is called a rupture of the insulating component under the corresponding part of the roof, which provides ventilation of the hidden space.

In the area of fixation to the roof of all kinds of masts, a chimney or an antenna, usually the film materials are cut and glued to the nearby elements of the lathing. For this purpose, either scotch tape is used for vapor barrier, or self-adhesive tape on a double-sided basis. In the case of roof windows, it is recommended to follow the manufacturer's instructions when providing waterproofing.

When working with perforated foil, the correct position of the vapor barrier side should be observed with the perforation oriented to the outside. In another design, there is a high probability of moisture penetration into the roof, the formation of steam inside, which will lead to the opposite effect. Root rot and leaks will be found very soon.

How is the anti-condensation film installed?

The sequence of actions is as follows:

1. Upon completion of the installation of the rafters and insulation, the film is fixed. It is best to wait for dry weather for this.
2. Maximum rafter distance should be within 120cm.
3. The anti-condensation film unfolds in one position, when its surface is facing the bottom of the absorbent part. The corresponding base is positioned so as not to touch the insulating elements.
4. Fixation is provided by means of staples of a construction stapler, glue, or galvanized nails with a large head.
5. Laying is carried out sequentially, starting from the eaves and reaching the ridge, with overlapping overlap, in separate horizontal layers. The magnitude of this overlap in the horizontal plane is up to 150mm, in the vertical part from 200mm.
6. The joints of the film are displayed on the rafter parts of the structure.
7. The joints are fastened with a special adhesive tape for vapor barrier or a tape for waterproofing.
8. Be sure to place the film evenly, without any hiccups. The formation of a sag up to 20mm in the central part of the rafter space is allowed, due to which the removal of steam and condensate of wooden components is guaranteed.
9. It is recommended to keep the maximum distance relative to the insulation and the film in the range of 40..60mm.
10. During installation, it should be understood that the lower part of the waterproofing is intended to drain water into the appropriate gutter.
11. At the end of the work, the installed coating is fixed by means of wooden slats with a section of 30 * 50mm with galvanized hardware. The roof lathing is placed on top.

Features of installing a waterproofing film

Here are the main points that you need to pay attention to:

1. It is unacceptable to install the film so that during its operation moisture from the upper part falls on the insulating layer of insulation.
2. It is important to properly handle the junction of the penetrating elements, be it chimneys, antennas, ventilation ducts and others. For this, trapezoidal cuts are provided at certain points. The valve of the upper and lower position is fixed to the horizontal component of the crate with a sealed tape, or to a penetrating element. The lateral elements are retracted to the upper point and fixed to the penetrating component in a similar way.
3. In the case of roof windows, adhere to the manufacturer's instructions for quality installation of adjoining materials.
4. Roofs with inclined ridges and hipped roofs require the laying of the film relative to the longitudinal axis of the corresponding element.
5. Strips with a horizontal arrangement on the pitched part of the roof are mounted from the outside with overlapping.

Installation of superdiffusion and diffusion membranes

With the help of these components, ideal protection of the home from moisture is provided, since their vapor-permeable qualities are much higher than other materials. The membranes with the maximum performance are placed directly on the insulation, without the need to provide a bottom space.

In most cases, they are limited by the upper ventilation gap within 40 mm, relative to the crate and the membrane itself. Laying is carried out horizontally, from the bottom of the roof to the ridge.

Fixing the membrane to the rafters is carried out using a construction stapler, galvanized nails with a wide head, or glue for vapor barrier, with counter-rail fasteners. In the case of laying the thermal insulation directly to the ridge, the membrane will overlap by 200 mm.

After treating the crate with an antiseptic and others protective compounds, before starting work, you should make sure that wooden elements completely dry out. At the end of the installation of the film, the counter battens are mounted on the crate, otherwise the steam outlet is not guaranteed.

All subsequent installation steps are similar to those with a waterproofing film, where galvanized hardware with a wide head, glue, or stapler staples are used to fix the membrane.

Membranes are joined with adhesive tape for vapor barrier, which protects against the effect of a capillary of moisture where the overlap is made. Areas of intersection of the roof with penetrating structural elements, including chimneys, antenna posts and ventilation ducts, are subject to insulation. For these purposes, a sealing tape is used. Relatively roof windows- are guided by the indication of their manufacturer.

When choosing the type of membrane, you should always study the instructions for its application and operation in order to choose the correct working side.

Installation of a volumetric diffusion membrane

Here is the following sequence of actions:

1. Laying is carried out parallel to the eaves overhang, with placement on the solid part of the flooring.
2. On the upper edge, fixation is carried out using roofing nails or staples.
3. Each next roll is installed with an overlap of the fixing point by 70mm.
4. The overlap is treated with glue or a suitable compound
5. On top of the waterproofing film, a sealing tape is fixed on a self-adhesive base, often made of polyurethane foam. This ensures the necessary protection in the area of mounting the counter-grill using nails.
6. It is allowed to carry out work at an air temperature of up to -5 degrees.

Products and manufacturers

It is necessary to fasten both the joints of the films and the places of their contact with walls, pipes, as well as with roof structures.

Below, our specialists have collected the most popular brands of materials for joining hydro and vapor barrier films, which allow you to create a completely sealed insulation.

Vapor barrier adhesive

DELTA TIXX adhesive for air and vapor tight bonding of all types of vapor barrier membranes and films to various designs made of concrete, wood or brick. The use of a clamping bar is not required. Volume: 310ml.

Vapor barrier tapes

1. Aluminum tape Izospan FL Termo is used to connect the edges of Izospan films of the FB brands, as well as FS, FD, FX. Can be used in rooms with high temperatures: baths and saunas. It can also be used to eliminate minor damage to fabrics of Izospan FB materials, as well as Izospan FS, FD, FX. Width 50mm.

2. Special double-sided adhesive tape D-TACK Tacoduo is used for hermetic bonding of waterproofing and vapor barrier films, as well as for organizing a hermetic adhesion of waterproofing and vapor barrier to wooden and metal structures roofs. Width 30mm.

3. Double-sided adhesive tape Izospan KL + reinforced with a diagonal mesh and is used to connect hydro and vapor barrier films to each other, as well as to seal the junction of hydro and vapor barrier to other elements of the roof, frame walls, floors. Width 30mm.

4. Tyvek Double-sides Tape has a heavy-duty adhesive backing and is used to seal and bond membranes in extreme humidity conditions. Width 50mm.

Scotch tapes for vapor barrier

1. Aluminum scotch tape Izospan FL is intended for bonding of any brands of "Izospan" waterproofing and vapor barrier films. Width 50mm.

2. Universal single-sided tape DELTA INSIDE-BAND I 60 with high adhesion force for tight connection of vapor barrier films in the overlap zone from the front side. It is used only indoors, and it is also not allowed to use it with waterproofing under-roof films. Width 60mm.

3. Scotch tape Juta Yutafol SP1 is used for a hermetic vapor-tight connection of the overlap of two layers of the film and for fixing the film to the details building structure... Width 15mm.

4. Special tape D-TACK Tacoflex is designed to create a vapor barrier circuit and is used to seal penetrations - ventilation pipes, glued with an overlap. Width 50mm.

5. Aluminum single-sided tape DELTA POLY-BAND P100 is used together with DELTA-REFLEX vapor barrier film. Width 100mm.

6. Tyvek Metallized Tape is made of Tyvek and acrylic adhesive. It is used for sealing overlaps of abutments to pipes, windows and doors, as well as for repairing Tyvek sheets. Width 75mm.

Conclusion

One way or another, in the absence of experience and knowledge, it is better to entrust the installation of the roofing film and membrane to specialists in the relevant field, however, the information provided will allow you to independently, reasonably control the construction, make the necessary adjustments and comments to the performers.

Laying of roofing films and membranes

Vapor barrier tape is used to bond the vapor barrier joints. Vapor barrier tape or vapor barrier glue can also be used.

How to glue the vapor barrier film on the roof?

The technology of laying a vapor barrier layer provides for gluing the canvases together. V modern construction for these purposes, use a special tape. 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 scotch tape in stores, let's figure out how to glue the vapor barrier.

The importance of sealing joints

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 ingress 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. It is also recommended to check the quality of the roofing cake when buying a house, whether it is an 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 take on 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 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:

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 no more than 40 microns, but it provides sufficient strength for work. This option is not suitable for all types of vapor control.
Reinforced aluminum. It adds a reinforcing layer that increases the strength of the material. The width remains the same as in the previous version.
Polypropylene. The most budget-friendly 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.
PTL tape. Consists of several layers: plastic wrap on the outside, fabric in the center and rubber-based glue on the working side. Quite rare scotch tape 200 microns thick.
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 roof windows.

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

Concerning technical characteristics, then the most important information here concerns the adhesion strength. If we talk about the connection with concrete, then the pull-off strength is 0.1 MPa. But to glue to metal surfaces not recommended as adhesion is reduced tenfold.

The water absorption of the adhesive tape is 0.2%, which is an excellent result when compared with roofing felt, which has an indicator that 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 for sealing the film adjoins to supporting 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 application 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 backing. 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 barrier in roofing pies and walls.

Ondutis BL also has two adhesive sides, one of which is covered with non-sticky paper. It is used to seal the joints of the 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.

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 to seal external seams. It is able to firmly bond the insulating film 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 bonding 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 you plan 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.

How to glue vapor barrier and how to glue the film

Sealing joints and what is the best way to glue the vapor barrier? Varieties and brands of adhesive tape. Selection criteria and characteristics.

Scotch tape for vapor barrier

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

Types of adhesive tapes for vapor barrier

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

Mounting tapes Ondutis ML and BL

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 fastening films to brick and concrete walls during installation.

How to choose and buy the right vapor barrier tape

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).

Installation of adhesive tape for vapor barrier

Stages of installing adhesive tape:

Preliminary preparation of all surfaces (canvases, bases). They must be cleaned, degreased and dried.
The bottom layer of vapor barrier is laid on the base. The adhesive tape is fixed around the entire perimeter.
The film is removed from the top of the tape.

The second "overlap" is laid on the first canvas and pressed tightly.

For best quality, joints should be sealed at minimum humidity and room temperature.

Scotch tape for vapor barrier: What is it, what types are there, which one to choose and how to make the installation

What is construction tape for vapor barrier. What kind of tape to glue the vapor barrier one-sided or double-sided. How to make a choice and buy the right scotch tape.

In our today's article, we will talk about protecting insulation from steam penetration. To be absolutely precise, we will try to figure out the best way to glue the vapor barrier. What means are there for this, and how are they used in this or that case. We asked an expert in insulation issues to help understand all the nuances and intricacies of the issue.

Editor:

Good afternoon, Specialist! Many words have been said about the thermal insulation of living quarters, attics, balconies, attics. We have clarified the situations in relation to the need to use a vapor barrier material in certain cases. But how to properly connect the vapor barrier sheets, how to seal the joints - these questions were left behind. Let's help readers figure it out.

Specialist:

Bonding sheets of vapor barrier material is a fairly simple process. But, at the same time, he is also very responsible. There are several types of adhesive tapes, and first of all, let's define the basic requirements that they all must meet:

High adhesion of the adhesive layer - the canvas must be reliably, "tightly" glued both to the insulated structures and to the surface of the vapor barrier sheets;
Should not deteriorate or change its properties under the influence of ultraviolet radiation;
Should not absorb moisture;
The operating temperature range should reach up to 90 degrees Celsius;
The service life of the adhesive tape cannot be less than the service life of the steam insulation itself - which is an average of 15 years.

Editor:

Our readers asked the question: "Is it possible to use ordinary stationery tape to connect the joints?"

Specialist:

My answer is definitely no. For all its stickiness and moisture resistance, it literally lags behind after a few days. Here are the connecting materials that will cope with the functions assigned to them:

Aluminum tape. This is a 10 cm wide roll of special aluminum foil with an adhesive layer. Perhaps this is the most versatile connector, but it also copes with gluing far from all types of vapor barrier.
Reinforced tape. In fact, this is the same aluminum connector, but with increased strength.
Polypropylene adhesive tape is perhaps the most affordable connector. But it has the lowest strength, which leads to its infrequent use.
Reinforced adhesive universal adhesive tape. A five-centimeter-wide skein of scotch tape is reinforced with a fabric layer, and at the base of the adhesive composition is rubber resin.
Butyl rubber connecting tape. High adhesion and reliable adhesion are the main advantages of this connector.

Editor:

As far as can be judged by the characteristics of adhesive tapes, each of them is good in its own way and the area of its application is determined by the characteristics of the premises, structures and types of surfaces that we glue?

Quite right. In addition, I want to draw your attention to the fact that even the strongest adhesive composition will not cope with its task if the surfaces to be insulated are not properly prepared.

I strongly advise you not to rely on the Russian "maybe", but to approach the issue of choosing an adhesive tape for vapor barrier with all responsibility, because the reliability and durability of the insulation of the entire building or your room separately depends on such a seemingly trifle. The joint opened due to the peeled off tape will become a channel for moisture to penetrate into the insulation fiber. Deterioration of thermal insulation, dampness, fungus ... Saving on trifles, we risk losing the battle for heat conservation.