Juta membranes. Waterproofing anti-condensation film Yutacon Roofing anti-condensation film Yutacon

Yutafol D - under-roof diffusion microperforated film

This is a three-layer material consisting of a load-bearing woven reinforcing polyethylene mesh, which is laminated on both sides with polyethylene film. The reinforcing mesh gives the film high strength, and double-sided lamination provides good waterproofing properties of the film.

Functions

Serves as a vapor-permeable under-roofing film to protect under-roof spaces from dust, soot and moisture resulting from rain and snow, and in attic spaces protects thermal insulation from external moisture and at the same time creates the opportunity, thanks to microperforation, to ventilate water vapor. The film is intended only for ventilated sloping roof systems, as well as for waterproofing wall structures when installing the film between the main load-bearing wall and siding.

Specification

Films UTAFOL D Standard, UTAFOL D Special consist of three layers: the main one is reinforcement mesh, made of polyethylene strips; and two external ones, made of polyethylene film. The reinforcing mesh gives strength to the material, double-sided lamination provides waterproofing properties, and micro-perforation creates the possibility of vapor permeability. In addition, this group includes the film UTAFOL D Silver. On the surface of some films, approximately 12 cm from the edge, there is a colored stripe, indicating a vapor-permeable version of the film. In addition, the color stripe determines the recommended horizontal overlap area with the subsequent film web. More precise information regarding overlap is given in the table.

The film is wound onto a roll in such a way that it can be easily rolled out on the roof, with the exception of UTAFOL D Silver film. It has a width of 1.4 and 1.5 meters with a length of 50 m and different densities - from 96 to 220 g/m2. The film, thanks to the raw materials included in its composition, has long term services. In addition, it is not susceptible to rotting, mold, pests and does not negatively affect health.

Usage

These films can be used for all types of roofs (Ondulin, Katepal, Frankfurt tiles, etc.) and siding. The film should be stored away from UV rays. It has reduced flammability, because contains a self-extinguishing reagent. In case of fire, it does not support the fire.

Specifications

Density - 96g/m2, 10g/m2
Thickness - 0.17 mm, 0.22 mm
Size -1.5 x 50 m
Water resistance - degree W2 (EN 1928)
Vapor permeability > 35 g/m2/24h (at +23°C and humidity 85% - CSN 727031)
Equivalent diffusion thickness S d - 4 m (EN 1931, N 12572)
Tensile strength - 250/240 N/5cm
Tensile strength with a nail -170/160 N/20cm, 200/190 N/20cm
UV stability - 3 months

Areas of use

Film Yutafol D is used in all ventilated insulated and non-insulated pitched roofs, where there is a ventilation gap above and below this waterproofing.

Installation

Along the film sheet, at a distance of about 12 cm from the edges, there is a colored (green or red) marking strip, which determines the amount of overlap between the two film sheets. It is fixed directly to the plane of rafters, joists or other roofing elements using mechanical staplers or galvanized nails with a flat head. It is laid on the roof with the bright side of the marking tape and the padding facing up (toward the roofing material).

Vertical and horizontal overlaps depend on the angle of inclination of the roof:

Roof slope degree.	Horizontal overlap	Vertical overlap	Gap
until 21 o	20 cm	10 cm	4 cm
22-30 o	15 cm	10 cm	3 cm
from 31 o	10 cm	10 cm	2 cm

Yutakon - under-roofing anti-condensation film

It is a polypropylene fabric laminated on one side with absorbent non-woven textiles and on the other with a thin polypropylene film.

Functions

YUTAKON anti-condensation under-roofing film is a material for protection against the penetration of moisture from the outside into the internal structure of an object, as well as against soot and dust in ventilated sloping roof systems. At the same time, it prevents the flow of condensing water vapor onto the applied thermal insulation due to the use of moisture-absorbing non-woven material (viscose).

Specification

Four-layer YUTAKON film is an ultraviolet-resistant polypropylene fabric laminated on both sides with a polypropylene film, to one side of which a moisture-absorbing non-woven material is attached. Top and bottom lamination ensures the waterproofing properties and vapor permeability of this film. Polypropylene fabric provides high strength, and non-woven material absorbs water vapor generated during internal space object. Once the condensation conditions disappear, the nonwoven material dries quickly in air flow. YUTAKON has a width of 1.3 and 1.5 m with a length of 50 m and a density of 130, 140 g/m2. The film, thanks to the raw materials included in its composition, has a long service life, no less than the roofing used. In addition, it is not susceptible to rotting, mold, pests, and does not negatively affect health.

Specifications

Density -130 g/m2
Thickness - 0.25 mm
Size -1.5 x 50 m
Water resistance - degree W 1 (EN 1928)
Vapor permeability< 0,35 г/м 2 /24ч (при +23°С и влажности 85% - CSN 727031)
Equivalent diffusion thickness S d - 50 m (EN 1931, EN 12572)
Absorbing capacity - min. 100 g/m 2 /24h
Tensile strength - 900/750 N/5cm
Tensile strength with a nail - 400/400 N/20cm
UV stability - 4 months

Areas of use

The advantage of YUTAKON is its strength and high ultraviolet resistance (12 months), which means that the roof can remain uncovered after covering with the film. for a long time unlike other roofing films. It can be used to protect roof structures during production preparatory work before installing the roofing, as well as for temporary protection of thermal insulation from atmospheric influences. Due to the fact that this film is vapor-tight and prevents water vapor from penetrating from the interior of the object into the roof covering, it reduces the possibility of water vapor condensation on the roof covering used.

Yutakon film is used in all ventilated insulated and non-insulated pitched roofs, where there is a ventilation gap above and below it and where the roofing material is metal tiles, galvanized sheets and other metal-based materials.

Installation

Along the film sheet, at a distance of about 12 cm from the edges, there is a black marking strip, which determines the amount of overlap between the two film sheets.

It is fixed directly to the plane of rafters, joists or other roofing elements using mechanical staplers or galvanized nails with a flat head.

It is mounted inside the room with an absorbent layer of non-woven textiles. The gap under the film, vertical and horizontal overlaps depend on the angle of inclination of the roof:

Roof slope degree.	Horizontal overlap	Vertical overlap	Gap
up to 14 o	22.5 cm	10 cm	6 cm
15-30 o	10 cm	10 cm	5 cm
from 31 o	10 cm	10 cm	4 cm

Yutafol DTB 150 - under-roof diffusion film

It consists of a load-bearing woven reinforcing polyethylene mesh, which is laminated on both sides with polyethylene film, and has a bottom layer of non-woven textiles, which protects the waterproofing layers of the film from mechanical damage from the flooring.

It is used in the construction of ventilated insulated and non-insulated pitched roofs, including those with a continuous deck, as well as for structures where the roof covering is in contact with the film.

Specifications

Density-150g/m2
Thickness- 0.3 mm
Size-1.5x50m
Water resistance- degree W 1 (EN 1928)
Vapor permeability> 10 g/m2/24h (at +23°C and 85% humidity - CSN 727031)
Equivalent diffusion thickness S d- 4.5 m (EN 1931, EN 12572)
Tensile strength- 320/370 N/5cm
Nail tensile strength- 350/300 N/20cm
UV stability- 4 months

Areas of use

Ventilated insulated and non-insulated pitched roofs, including those with a continuous deck, as well as for structures where the roofing is in contact with the film.

Installation

The film is mounted with an absorbent layer of non-woven textile inside the room, the minimum vertical and horizontal overlap is 10 cm.
It is fixed directly to the solid flooring or to the plane of the rafters. The minimum ventilation gap under the flooring should be 3 cm. The maximum permissible distance between the rafters is 150 cm.

YUTAVEK - under-roof superdiffusion membrane

Function . The super-diffusion membrane YUTAVEK is used as a vapor-permeable under-roof waterproofing to protect under-roof structures, thermal insulation and the attic from humidity resulting from rain and snow, as well as from dust, soot and the adverse effects of wind. Thanks to the high vapor permeability YUTAVEK increases weatherability water vapor from the internal space of the object. YUTAVEK can be used in construction with any type of thermal insulation and for all types of roofing and wall structures.

Specification .The YUTAVEK superdiffusion membrane is a three-layer polypropylene material consisting of two outer layers (black and white) that provide strength, and an inner layer that provides waterproofing ability. This material has high vapor permeability(1000 g/m2/24h). The roll has dimensions of 1.5 x 50 m and a density of 150 g/m2.

Usage .The YUTAVEK superdiffusion membrane is mounted directly on thermal insulation or other base covering load-bearing structure roof, where the membrane comes into contact with its lower white side with the thermal insulation. This material can also be used for external insulation vertical walls object. The YUTAVEK superdiffusion membrane is recommended for all types of coatings. YUTAVEK should be stored indoors without exposure to ultraviolet (UV) rays.

YUTAKON - under-roof waterproofing with anti-condensation layer

Function . Under-roofanti-condensation YUTAKON waterproofing is a material for protection against the penetration of moisture from the outside into the internal structure of an object, as well as against soot and dust in ventilated sloping roof systems. At the same time, YUTAKON waterproofing prevents the flow of condensing water vapor onto the applied thermal insulation due to the use moisture-absorbing non-woven material (viscose).

Specification .Four-layer waterproofing film YUTAKON - UV-resistant polypropylene fabric laminated on both sides with polypropylene film, to one side of which is attached moisture-absorbing non-woven material. Upper and bottom lamination provides waterproofing properties and vapor tightness of this film. YUTAKON polypropylene waterproofing fabric provides high strength, and the non-woven material absorbs water vapor generated in the internal space of the object. After condensation conditions disappear, the nonwoven material dries quickly in the air stream. Waterproofing YUTAKON has a width of 1.3 and 1.5 m with a length of 50 m and a density of 130, 140 g/m2. YUTAKON film, thanks to the raw materials included in its composition, has a long service life, no less than that of the roofing used. In addition, it is not susceptible to rotting, mold, pests, and does not negatively affect health.

Usage . The advantage of YUTAKON waterproofing is its strength and high ultraviolet stability (12 months), meaning that the roof after covering with the film can remain uncovered for a long time, unlike other under-roofing films. It can be used to protect roof structures during preparatory work before installing the roof covering, as well as to temporarily protect thermal insulation from atmospheric influences. Due to the fact that this UTAKON film is vapor-tight and prevents water vapor from penetrating from the interior of the object into the roof covering, it reduces the possibility of water vapor condensation on the roof covering used. Although YUTAKON waterproofing film can be used for all ventilated sloped roofs, it is recommended to use it mainly for profiled roofing ( metal tiles) such as Gasell Profil, Rannila, Kami, Plegel, etc.

YUTAFOL D - under-roof diffusion waterproofing

Function . YUTAFOL D waterproofing serves as a vapor-permeable under-roofing film to protect under-roof spaces from dust, soot and humidity arising from rain and snow, and in attic spaces it protects thermal insulation from external moisture and at the same time creates the possibility, thanks to microperforation, ventilate water vapor. YUTAFOL D waterproofing is intended only for ventilated sloping roof systems, as well as for waterproofing wall structures when installing a film between the main load-bearing wall and siding.

Specification . Waterproofing films UTAFOL D Standard and UTAFOL D Special consist of three layers: the main one is a reinforcing mesh made of polyethylene strips; and two external ones, made of polyethylene film. Waterproofing reinforcement meshUTAFOL D imparts strength to the material, double-sided lamination provides waterproofing properties, and microperforation creates an opportunity vapor permeability. This group also includes UTAFOL D Silver film. On the surface of some films, approximately 12 cm from the edge, there is a colored stripe, indicating a vapor-permeable version of the film. In addition, the colored stripe determines the recommended horizontal surface of the overlap with the subsequent web of UTAFOL D film . More precise information regarding overlap is given in the table.Waterproofing UTAFOL Dis wound onto a roll so that it can be easily rolled out on the roof.

The exception is the waterproofing film UTAFOL D Silver. It has a width of 1.4 and 1.5 meters with a length of 50 m and different densities - from 96 to 220 g/m2. The film, thanks to the raw materials included in its composition, has a long service life. In addition, it is not susceptible to rotting, mold, pests and does not negatively affect health.

Usage . YUTAFOL D waterproofing films can be used for all types of roofs ( ceramic tiles, cement-sand tiles, flexible tiles, metal tiles, euro slate, etc.), as well as for siding. The film should be stored away from UV rays.In case of fire, it does not support the fire, as it contains a self-extinguishing reagent.

YUTAFOL SP 1 - connecting tape

Functions . Connecting tape UTAFOL SP 1 provides air - vapor tightness connecting films with vertical and horizontal overlap, used for attaching to protruding parts. For example, in the case of a smooth surface, it is used to attach to adjacent building structures. Thanks to butyl rubber and its perfect properties, the connecting tape YUTAFOL SP 1 makes it possible not only to perfectly attach films and other materials to each other, but also guarantees the strength of the connections against the penetration of water vapor.

Specification . Connecting tape YUTAFOL SP 1 is a double-sided self-adhesive connecting tape made of butyl rubber without reinforcement, dimensions 1x15 mm, wound on a paper sleeve of 45 m.p.

Application . Can be used to connect polyethylene and polypropylene materials, these materials with others, such as metal, glass, wood, etc. subject to cleanliness and degreasing of surfaces.

In the article describes the main properties of materials present on the construction market that protect the roof from moisture. In order not to make a mistake in the choice, we will consider the features of choosing a particular material depending on the type of roof and the type of roofing covering.

Vapor barrier films
Waterproofing perforated films
Waterproofing films with anti-condensation coating
Membranes.

VAPOR PROOF FILMS

Application.Vapor barrier films are used in houses with insulated roofs to isolate the insulation from vapors that rise from inside the house.
Installation.It is very important to seal all vapor barrier joints (between film sheets and at junctions with structural elements). If the joints are not sealed, moist air from below (from the premises) will penetrate into the thermal insulation and deteriorate its properties. (These 2 paragraphs are on a different topic, so they should not be started with bullet points).
Choice.When choosing a vapor barrier, you need to pay attention to the vapor permeability of the material - δ(mg/sq.m*h*Pa). Vapor permeability shows how many milligrams of water vapor pass through a film with an area of 1 square meter. m in 1 hour (the air temperature on both sides of the film is the same, and the difference in partial vapor pressure is 1 Pa). The lower the vapor permeability number, the better vapor barrier. (in the description of membranes below there is a different unit of measurement, you need to select only one..)

WATERPROOFING PERFORATED FILMS

Application.Waterproofing perforated films can be used with any type of roofing coverings.
Installation.The vapor permeability of these films is lower than that of thermal insulation, so when installing them, you must make 2 ventilation gaps (for a description of the ventilation gaps, see the article ).
Advantages:

Low price. However, it is worth checking whether the roof structure will actually be cheaper when using such films than roofing with a membrane. As described, such films can work successfully only if there is a lower ventilation gap - between the heat-insulating material and the film. Lower ventilation gap is carried out by additional lathing, which is mounted on top of the rafters. Thus, it will be necessary to use more wood. In addition, you will need more Supplies: antiseptics, antipyretics, fasteners and additional time for roof installation.
This film is the most economical (compared to membranes) option for waterproofing pitched roofs with a cold attic; it protects the thermal insulation of the ceiling top floor from moisture. If a membrane is laid in this design, then some of its characteristics simply will not be used, and perforated film is best combination price/quality for such a roof.

Flaws:

If the roof has complex shape(several valleys, transitions, different levels, skylights etc.), then ensuring a ventilation passage free for air flow can be difficult (especially in the space between the rafters). In this case, there is a threat that the humid air will not be able to completely erode from the insulation, so remaining in it, moisture can lead to the formation of fungus and mold.
Such films are more difficult to install than membranes, since it is necessary to make additional sheathing over the insulation to create a lower ventilation gap, as mentioned above.

Choicewaterproofing films should be based on:

Water resistance (waterproof). Water resistance, as the name suggests, is the ability of the membrane to resist the penetration of moisture from the outside - rain, snow, etc. It is measured in millimeters (mm) of water. This figure must be at least 0.3 m of water column. If the water resistance of the film is lower, then it cannot serve as a temporary roof even a short time, so it must be covered with roofing material immediately after installation.
Resistance to infrared (IR) radiation, since the film is exposed to a strong heat flux, and the UV resistance time must be at least 2 months.
Strength. Strength must be no less than 150 N/5cm

ANTI-CONDENSATION FILMS

Application.Used with metal roofs - metal tiles, seam roofing coverings.
Installation.The fleecy side of the film absorbs moisture, preventing it from getting on inner surface roofs. Therefore, powerful ventilation of the under-roof space is necessary to remove drops of moisture. For these purposes, it is imperative to make a lower ventilation gap.

Films of this type protect the inner surface of the roof from moisture, but do not protect against condensation in summer time when moisture penetrates under the roof from the outside during the hot part of the day and cools down at night.

Choice.When choosing an anti-condensation film, you need to pay attention to vapor permeability. It should be close to zero (about 0.3 g/m2hPa) in order for the film to maximally protect the metal roof from condensation and subsequent corrosion.

DIFFUSION AND SUPERDIFFUSION MEMBRANES

Application.Membranes CANNOT be used in conjunction with roofing materials with high thermal conductivity: metal tiles and euro slate*. The exception is special volumetric diffusion membranes (see below). CAN be used with ceramic, cement-sand, bitumen tiles, or composite metal tiles - these roofing coverings have a thermal conductivity lower than simple metal tiles and efro-slate. In addition, the layer acrylic primer on the inner surface of the composite metal tile protects it from moisture.
Installation.They are mounted on roofs of complex configurations, since it is difficult to create a lower ventilation gap on them using additional sheathing.
Advantages.One top ventilation gap is needed (saving materials, since no additional sheathing is needed).

* The issue of using membranes with Euroslate is still controversial, and there are no final recommendations. IN in this case We were guided by the fact that Euro slate has high thermal conductivity.

VOLUMETRIC SEPARATION DIFFUSION MEMBRANES

Application.They are used for seam and other metal coatings - zinc, copper, steel, aluminum. Particularly good for titanium-zinc coatings on gentle slopes (3-15°). Also recommended for roofs with complex shapes.
Advantages:

Protects the roof covering from condensation, as there is constant ventilation thanks to the volumetric grille.
Only one top ventilation gap is needed, which is often provided by the membrane itself.

Choice.For membranes, the main quality indicator when choosing is vapor permeability. By European standards, vapor permeability is assessed using the Sd value - an indicator of the thickness of the resistance to water vapor diffusion, and the lower its value, the better the membrane: from 0.02 to 0.4 m. By Russian standards, the vapor permeability of membranes is measured in g/(m² day): at In this case, the higher the number, the greater the permeability of the film: the optimal (sufficient) indicator is 1000-1100 g/(m²day)

Anti-condensation films, as well as membranes, according to builders, are best suited for attics. Choosing between anti-condensation films and diffusion membranes depends on the used roofing material:

diffusion and superdiffusion membranes are installed with one upper ventilation gap (between the membrane and the roof) - under roofing coverings with lower thermal conductivity: natural and cement-sand tiles, bitumen tiles, etc.
Volumetric membranes are mounted mounted with one upper ventilation gap (between the membrane and the roof) - under metal roofing coverings.
anti-condensation films - mounted with two ventilation gaps - upper and lower.
Suitable for metal roofing coverings - metal tiles, corrugated sheets, seam roofing and euro slate.

Let's summarize everything that was mentioned above, considering the use of under-roofing waterproofing materials with concrete roofing coverings in heated houses.

Roofing made of soft (bitumen) tiles

As waterproofing, it is possible to use diffusion and superdiffusion membranes with one upper ventilation gap or waterproofing films made of polyethylene or polypropylene - with two ventilation gaps. The rafters are installed, then waterproofing is laid, a counter-lattice is laid on top, then lathing, solid flooring, tiles, insulation (thermal insulation) and then vapor barrier.

*Laying of waterproofing films is carried out using the same method for roofs with any covering. Read more about the installation of waterproofing and vapor barrier films in the next article.

Metal roofing (without internal acrylic coating)

An anti-condensation film is recommended as waterproofing, since the metal has high thermal conductivity, and with daily temperature changes on the lower surface metal coating condensation appears. It is also possible to use waterproofing films. DIFFUSION MEMBRANES* CANNOT BE USED, except for special volumetric separation diffusion membranes (see the article “Underroofing films and membranes. Types and materials of underroofing films and membranes”).

To eliminate moisture between the metal tile and the waterproofing, an upper ventilation gap of about 40 mm high is created using lathing. There is a lower ventilation gap between the thermal insulation and waterproofing. From below, the thermal insulation material (insulation) is protected by a vapor barrier film. The vapor barrier is mounted on the inner surface of the rafters with a staple gun, mounted with an overlap and connected with adhesive tape.

* You can read more about laying anti-condensation film in the next article.

Composite metal roofing (with internal acrylic coating)

The thermal insulation below is protected by a vapor barrier. It is also possible to use waterproofing films as waterproofing, in which case two ventilation gaps are arranged.

*More details about the installation of diffusion membranes can be found in the next article.

Roofing made of natural tiles

It is recommended to use a diffusion and superdiffusion membrane as waterproofing with the installation of one upper ventilation gap. Waterproofing films are also used. As a vapor barrier that protects the thermal insulation from below - a vapor barrier film. When using waterproofing films, two ventilation gaps are created - upper and lower.

Slate roofing

Asbestos-cement slabs can be used as waterproofing for diffusion and super-diffusion membranes with the installation of one upper ventilation gap between the membrane and the roof.

It is also possible to use waterproofing films made of polyethylene or polypropylene, then you need to arrange two ventilation gaps - upper and lower (between thermal insulation and waterproofing). Used as protection against steam from the inside vapor barrier film.

Euroslate roofing

Euro slate has high thermal conductivity; with a daily temperature difference, condensation appears on its lower surface.

Therefore, anti-condensation films and other waterproofing films are used as protection, and DIFFUSION MEMBRANES DO NOT APPLY (as mentioned above, this issue is controversial). Two ventilation gaps are required - top and bottom. A vapor barrier film is used to protect the thermal insulation from steam from the inside.

Seam roof

It is also possible to use waterproofing films (both perforated and non-perforated) made of polyethylene or polypropylene and vapor barrier films with two ventilation gaps. DIFFUSION MEMBRANES CANNOT BE USED, except for special volumetric separation membranes for metal seam roofs (see the article “Underroofing films and membranes. Types and materials of underroofing films and membranes”).

Slate roof

It is also possible to use waterproofing films made of polyethylene or polypropylene and vapor barrier films with two ventilation gaps.

In unheated houses and houses with cold unheated attics vapor barrier is not suitable. Only waterproofing is installed. It is recommended to use perforated waterproofing film made of polyethylene or polypropylene for these purposes.

The fact that insulation moistened with condensate loses almost half its ability to retain heat is known to any specialist in the construction industry. This problem is especially relevant for the under-roof space. In order to eliminate this negative factor, it is necessary anti-condensation film. She provides necessary protection insulation against moisture penetration. And today this task is one of the most important when constructing new houses or renovating old ones. That is why anti-condensation waterproofing films are one of the most popular products in the global construction market.

What is anti-condensation film?

Under-roof anti-condensation waterproofing film is a product made of polypropylene, on one side of which non-woven textiles are applied. Its presence is quite justified, since textile pile has the property of retaining moisture, and its weight can be several times greater than the weight of the film itself.

Polypropylene from which they are made anti-condensation films for metal tiles, is an effective barrier to moisture. It does not allow air to pass through, thereby preventing snow and rain from blowing in from the outside. In addition, it has other characteristics that make any roof more functional, namely:

insensitive to ultraviolet radiation;
does not allow heat to pass out;
has excellent strength characteristics;
easy to install.

Features of application

Anti-condensation films - best option for those cases in which diffuse membranes are not able to provide the necessary protection of insulation from negative impact condensation and cannot provide the desired moisture removal. They are ideal for the following cases:

arrangement and repair of the attic;
installation of roofs finished with euro slate, metal tiles, corrugated sheets;
arrangement of uninsulated under-roof space;
installation of roofs over rooms with high humidity levels.

In addition, do not forget that this type material is able to remove moisture well from the premises in which Finishing work using “wet” technology. Due to their immunity to ultraviolet radiation, anti-condensation films can serve as temporary protection for the thermal insulation layer at the stage of roof construction when the finishing has not yet been installed.

In general, the presence of an anti-condensation film can extend the service life of a metal tile roof by more than 50%.

Anti-condensation film, Full waterproofing with under-roofing anti-condensation film under metal tiles

Under-roof anti-condensation waterproofing film is a product made of polypropylene, on one side of which non-woven textile is applied.

What are anti-condensation membranes

Anti-condensation membranes (films) are coatings made of waterproof spraying and polypropylene fabric (used as an adsorbent layer) that do not allow steam to pass through. This combination absorbs steam and removes it beyond the roofing material. The film is capable of trapping condensation that forms on inside roof and protects the supporting structure. The pile after installing the film can hold condensate weighing 3-6 times its own.

The top layer is responsible for the water-repellent properties of the material, and the absorbent capabilities of the adsorbent layer prevent the passage of water vapor. This ensures insulation of the insulation and prevents condensation from entering the parts from the surface of the membrane rafter system.

Where are anti-condensation films used?

The main area of application of membranes is pitched metal roofs, namely: metal tiles, seam roofing coverings. They are in greatest need reliable protection from corrosion. Due to the low quality of the material, violation of technology, and exposure to temperature, microcracks may appear as a result of expansion or contraction of the metal during daily temperature fluctuations. The presence of condensation on the inside of the material leads to the formation of rust. Using an anti-condensation membrane is a way to eliminate the problems described above, since the adsorbent layer effectively absorbs steam and condensate.

Anti-condensation films with a hydrophobic coating are used where diffusion membranes cannot cope with the protection of the roof from condensation and drainage excess moisture. Anti-condensation products are perfect for insulating insulation, repairing attics, installing roofs covered with metal tiles, galvanized sheets, ondulin or corrugated sheets. In a roof that does not have insulation, anti-condensation films prevent the entry of dust and soot.

The films function perfectly in roofs that are located above objects with increased circulation of moist air, and their resistance to ultraviolet radiation allows the membranes to be installed as temporary protection for rafters and insulation in the absence of finishing materials. Metal tiles, which have an anti-condensation film underneath, last 50-70% longer than a roof not protected by a membrane.

Advantages of anti-condensation film

high mechanical strength;
unlike roofing felt and glassine, it does not emit harmful substances when heated, it has no odor;
films are environmentally friendly and do not interact with acids and alkalis;
retains its properties throughout the entire service life, does not break or be destroyed under the influence of the environment;
thanks to UV stabilizers, the membranes can be used in the open sun without consequences;
Due to their light weight, the films do not load the rafter system, are easy and quick to install, and have reasonable prices.

Impact resistance ultraviolet radiation, elimination of heat loss, resistance to stretching during installation - the main advantages of anti-condensation films.

Features of membrane installation

Anti-condensation films are installed between the insulation and the finishing or roofing material. The pile side of the membrane perfectly absorbs moisture and prevents it from reaching the inner surface of the roof. During installation, it is necessary to provide powerful ventilation of the under-roof space for unimpeded escape of moisture. For this purpose, a ventilation gap is created in the rafter system.

Membranes are installed only in dry weather after installing the rafter system and laying insulation. The film is laid out evenly, without folds, with the absorbent surface down on the rafters, and the bottom should not come into contact with the heat-insulating material. It is laid out only overlapping and in horizontal stripes from the eaves to the ridge of the roof.

Fastened with a construction stapler or galvanized nails with a large head. The overlap of the strips vertically should be 20 cm, and horizontally - at least 15 cm. The membrane joints are laid on the rafters and secured together with mounting tape. The distance between the anti-condensation film and the insulation should be 40-60 mm; moisture will flow along the lower edge of the membrane into the gutter for water drainage.

After installation, the covering is secured using 3x5 cm slats and nailed with galvanized nails on top of the rafters. A sheathing is made on top of the slats. After installation is completed, moisture should not get on the insulation. Places of contact of the anti-condensation membrane with stove and fireplace chimneys, antenna stands and ventilation ducts should be further insulated.

Ondutis is a popular manufacturer of anti-condensation films

Ondutis anti-condensation membranes are very popular, namely: R70, which protects the insulation from steam and condensation, and R70 Smart - comes complete with mounting tapes for gluing.

Conclusion

When choosing a film, you need to pay attention to its vapor permeability: it should be close to zero (0.25-0.35 g/m2 h*Pa) in order for the membrane to maximally protect the roof from condensation and subsequent corrosion.

Anti-condensation membranes (films): What is it?

We will understand what anti-condensation membranes or films are in this article from construction experts.

Under-roof waterproofing film

Roofing films provide excellent vapor and waterproofing!

Anti-condensation roofing films: main characteristics

Each of us, having a house or cottage, is interested in ensuring that condensation does not form under the roof of the home and that the structure can last as long as possible. After all, what causes condensation? It appears due to temperature changes on the lower plane of metal sheets.

In addition to this, the vapors rising from interior rooms buildings, in the cool air the spaces under the roof turn into water. And this is already fraught with the insulation getting wet, which means it will lose its thermal properties. This is also a direct path to freezing of the roof and the appearance of ice on it, rotting of the sheathing and rafters, an increase in mold and damage interior walls and ceilings of the house.

To avoid such unforeseen situations, it is better to take care in advance of both the insulation of the required thickness and its protection from the metal tiles - a correctly selected under-roofing film will help 100% avoid problems with the roof!

Vapor and waterproofing - what types of films can provide them? It should be noted that hydro- and vapor barrier films can be: single-layer and consist of several layers, with or without adhesive tape... That is, roofing films can always be chosen to suit every taste, at any cost and taking into account all the nuances proper organization space under the roof (i.e., high-quality film must be water- and airtight, vapor-permeable, durable, and so on).

So, a waterproofing film of any type is designed to prevent moisture from leaking in from the outside and at the same time should help remove a certain amount of insulating vapor to the outside (due to microperforation).

Installation of films must be done with a sag of 20 mm (above the insulation).

As for vapor barrier films, they are needed to protect the insulation from steam. There must be a tight connection!

Under-roofing anti-condensation films: the most common of them

Tyvek® Soft membrane

A single-layer material with which vapor barrier can be easily achieved. It is an excellent protection for a pitched roof with a ventilated gap (even an attic one) from all winds and precipitation. Used for work and residential premises.

Single-layer waterproofing film with increased strength and anti-reflective coating. Perfectly protects stingrays even mansard roofs+ walls of houses from winds and precipitation.

Its installation is carried out directly on the thermal insulation material and rafters without a ventilation gap.

Tyvek® Supro membrane

An excellent material when waterproofing and the highest strength with vapor permeability are required. In addition, the film does an excellent job of providing wind protection for slopes of any variation (warm, cold or combined roofs). It is successfully used in floor and wall structures.

A film with pronounced waterproofing properties. It has adhesive tape of the highest strength and is equipped with a vapor barrier.

Most the best option to protect the roof space and walls of the building from all weather conditions. It is used in all types of roofs, both with and without load-bearing structures.

Tyvek® Housewrap

This under-roof film can be laid directly on the thermal insulation. It is a durable, lightweight, flexible, windproof, single-layer material with waterproofing properties. It is good because it increases the tightness of the structure and can be attached to a frame stand, plywood sheathing, or block masonry.

Ideal for wood and steel frames, curtain facades and concrete structures. Very durable (4 months without covering is not the limit).

DuPont™ Tyvek® Solid

The material is endowed with the highest characteristics, in particular it has excellent vapor barrier. Acts as a protector of various roofs and facades from wind gusts and other weather conditions. It has an anti-reflective coating and can be laid directly on thermal insulation and rafters. Suitable for both commercial and individual homes.

Tyvek® Solid Silver

It perfectly saves energy at home, provides warmth in winter, and cool comfort in summer. Allows you to save on heating and air conditioning up to 15-20%.

DuPont™ Tyvek® Supro Tape membrane

Durable hydro/vapor barrier film with adhesive tape highest quality. Excellent protection from winds and various precipitations roofing slopes different load-bearing or not, structures.

Indispensable for the construction of roofs of both non-residential and residential buildings.

DuPont™ AirGuard® Reflective

The most advantageous offer for those consumers who want to achieve thermal resistance of the entire room in winter by reflecting thermal radiation inside the home. The vapor barrier layer makes it possible to enhance the effect of thermal insulation and makes the building more energy efficient.

Tyvek AirGuard® Reflective

Moisture resistance, tightness, fur. strength, low condensation formation, low heat loss during convection - this is all the vapor barrier film of the specified model. In addition, it does not respond to fire and meets all international standards as rubber-based materials and plastics. Able to reflect about 95% of warm radiation.

Tyvek AirGuard® SD5

The building membrane of our time is an excellent choice when you need to reduce heat losses, minimize the formation of condensation inside thermal insulation material. Lightweight, easy to install, with mechanical strength, with control of steam transmission, in full compliance with the European standard certificate (EN 13984), the film is very popular in all corners of the Russian Federation.

Because its main advantages: the absence of a “greenhouse” effect, a comfortable humidity-temperature balance in the house, environmental friendliness and safety for the outside world.

Diffusion type waterproofing filmDELTA-VENT N and DELTA-VENT N PLUS

3-layer film is excellent for completely insulated roofs and is a fabric made of non-woven material on a PVC base (the layers are glued together with ultrasound). Features self-adhesive edges for quick, wind- and waterproof installation (no need for tape or glue).

This under-roofing film has a gray surface with a matte effect, low weight (130 g/m2), and the highest resistance to fur. damage and data stability.

2-layer premium film with an anti-condensation layer that retains and then removes condensation due to diffusion. Is the guarantor of such important feature as waterproofing. Resistant to tearing and steam penetration (this is facilitated by the polyurethane coating).

When laying it is convenient because it has on its underside non-woven material and a cellular surface - during cutting, smooth edges come out and the blade is wasted minimally. Widely used in roofs without decking or with formwork.

4-layer fabric with a reflective layer of aluminum, belongs to the premium class. Used on flat and pitched roofs.

During its operation, you will achieve complete vapor barrier; also, such a film helps save energy.

The film is endowed with record strength properties, the highest ductility, improved thermal protection and 99% electromagnetic shielding. radiation.

Tyvek® roofing films and acrylic tapes

Tyvek® acrylic tapes come in both single-sided and double-sided. 1-sided tapes are good for sealing overlaps, are excellent for a variety of membranes, and as a sealant cope well with joints at the junction of doors, windows, and pipes.

Double-sided tapes have more capabilities: they have excellent adhesion in moisture conditions, are suitable for all membranes, which can be glued both to each other and to smooth surfaces.

Under-roof waterproofing anti-condensation film - review of materials, MY ROOF

Under-roof waterproofing film for MY ROOF | Roofing films provide excellent vapor and waterproofing! Roofing films…

In our company you can buy Yutafol D, YUTAKON films, YUTAVEK membrane at very affordable prices. Our managers will answer all your questions about the use of this or that membrane, and will also quickly process your order.

Yutafol D YUTAVEK YUTAKON

Today, the products of the Czech company Juta are in particular demand among consumers as wind and water protection. Our company offers a wide range of various protective films and membranes produced by Juta, the main purpose of which is to create comprehensive protection for insulation, roofing and building structures from moisture and condensation, taking into account the difficult conditions of the Russian climate.

Attention! When installing protective films, be sure to leave a ventilated gap (about 2-4 cm) - this is necessary so that condensed moisture quickly evaporates from the surface of the membranes and is carried away with the air flow.

Wind-hydro-protective films Yutafol D

Wind-hydro-protective films UTAFOL D are presented in several types - Standard, Special and Silver.

The “Special” index is assigned to low-flammable types of film UTAFOL D: such films are characterized by reduced flammability due to the use of a self-extinguishing component. This type of material is called “combustion suppressant”: in the event of a fire, the film does not contribute to the expansion of the fire and does not emit flammable substances that could cause the fire to quickly spread.

Yutafol D films have three layers: the main (inner) layer is a reinforcing mesh consisting of polyethylene strips, and there are also two outer layers made of high-quality polyethylene film. The internal reinforcing mesh gives the material increased strength, lamination on both sides provides the necessary waterproofing properties, and micro-perforation makes the protective film vapor-permeable, does not allow moisture to enter the room and ensures the removal of condensation from the insulation to the outside.

Utafol D films are used:

as a vapor-permeable under-roof film to ensure effective protection under-roof spaces from moisture, dust and soot resulting from rain or snow;
to protect thermal insulation in attics from external moisture and simultaneously ventilate unwanted water vapor;
as a device for waterproofing wall structures - in case of installation protective film between the siding and the main load-bearing wall.

There should be a colored stripe on the surface of Yutafol D films approximately 10-12 cm from the edge - its presence suggests a vapor-permeable version of this film. In addition, the color strip also determines the recommended width of the horizontal overlap surface in relation to the subsequent film sheet.
Film Yutafol D can be used for all types of roofing (Katepal, Ondulin, etc.) and siding, in all inclined ventilated roofing structures.

Under-roofing anti-condensation film YUTAKON

Four-layer film UTACON is an ultraviolet-resistant polypropylene fabric, which is laminated on both sides with polypropylene film and has a layer of moisture-absorbing non-woven material. Top and bottom lamination is necessary to ensure waterproofing properties and vapor resistance, polypropylene fabric is used to create high strength, and quick-drying non-woven material is used to absorb water vapor generated in the internal space construction site.

YUTAKON under-roof anti-condensation film is intended for:

for guard internal structure the object from the penetration of moisture from the outside, as well as from the appearance of soot and dust in ventilated (ventilated) systems of inclined roofs;
to prevent condensing water vapor from dripping onto the insulation used;
to protect finished roofing structures during preparatory work before installation of the roofing;
to protect thermal insulation from harmful effects atmospheric phenomena.

UTAKON film Available in widths of 1.3 and 1.5 m, length 50 m and density 130, 140 g/m2. This material, due to the quality of the raw materials included in its composition, has a relatively long service life - no less than that of the roofing used. In addition, the film is resistant to pests, does not rot or mold, and has no negative influence to your health.

The advantage of YUTAKON film is not only its strength and durability, but also its good ultraviolet resistance (about 12 months) - this means that the roof, after providing protection with the help of YUTAKON film, can be uncovered (without any additional protection) for a long time - unlike coating with other under-roofing protective films.

The use of UTAKON film is possible in all ventilated non-insulated and insulated pitched roofs, where the roofing material is metal tiles or galvanized sheets, or other roofing materials made on a metal basis (such as Rannila, Gasell Profile, Plegel, etc.).

Superdiffusion membrane YUTAVEK

UTAVEK membrane is a polypropylene material consisting of three layers: two outer layers (black and white) provide strength, and the inner layer is responsible for the waterproofing superdiffusion ability.
Properties of the UTAVEK membrane:

high vapor permeability (µ = 64, > 1200 g/m2 in 24 hours);
high water resistance (it has been experimentally proven that the membrane holds a column of water whose height is more than 1,500 mm);
good strength (more than 150 N/5 cm);
durability - no less than the durability of roofing coverings;
resistance to mold, rot and pests;
absolutely harmless to humans.

YUTAVEK used to create vapor-permeable under-roof waterproofing in order to ensure protection of under-roof structures, thermal insulation systems, attic space from humidity, which may arise due to natural precipitation, adverse effects of wind, as well as from soot and dust. The high vapor permeability of the membrane helps to accelerate the weathering process of condensate that accumulates in the internal space of the construction site. This material is also often used if necessary external insulation vertical walls of the object.

The YUTAVEK membrane can be used in the construction process of objects with all types of thermal insulation and for any roofing and wall structures. This membrane is mounted directly on the thermal insulation or flooring itself, touching its underside ( white), or some other base that covers the supporting structure of the roof. The YUTAVEK membrane, unlike other superdiffusion membranes, can be laid directly on an impregnated (treated with a special composition to prevent rotting) surface wooden structures roofs

Rolls of superdiffusion membrane UTAVEK have standard sizes 1.5 x 50 m with a density of 150 g/m2. When storing the UTAVEK membrane, it is necessary to exclude access to ultraviolet rays.