Steam insulation tape for windows: technical specifications

The vapor barrier tape, like the trim of the slopes, is able to improve the quality characteristics of the construction, which prolongs the period of its operation. On sale you can find such tapes, which have one or both sides of an adhesive strip. It is designed to fix the tape to the window and the wall. Among other things, such materials are classified by temperature characteristics during operation.

The first variant is suitable for the summer period and can be used in the temperature range from +5 to + 35 ° C, whereas products intended for winter are able to undergo temperatures below zero degrees. The width of this strip can vary depending on the tasks, which allows it to provide a vapor barrier of seams of different sizes. When a vapor barrier tape is chosen, you should take into account that its width should be 45 mm larger than the mounting seam.

general description

The tapes for installation outside can be composed of foam materials, they are required for sealing joints and can be used in conjunction with a plaster solution that increases the vapor barrier characteristics. On sale there is a vapor barrier tape for windows, the characteristics of which photos are presented in the article. This material can be based on butyl rubber, which is designed to seal joints and install on window and door blocks. The product consists of a non-woven fabric, is primed in the process of installation, in the next stage it is covered with plaster, and on the final stage it is painted. This type has a self-adhesive layer. If you need a vapor barrier tape that will be used in high humidity, then the material should be placed under the dry finish of the slopes, using a metallised version.

Characteristics of foil vapor barrier tape

The foamed hydro-heat-insulating tape is glued on clean, dry, and also pre-degreased surfaces. The material itself is supplied in boxes, the dimensions of which are 420x420x600 mm. It should not be operated at temperatures below + 10 ° C. The tapes have foam polyethylene in the base, which is laminated and on one side is metallised with polypropylene film, while on the other side there is a waterproof adhesive layer that reliably provides fastening of the material to concrete, brick, metal, plastic and wooden structures.

The basis is the material, which consists of a closed honeycomb structure, it has low hygroscopicity and almost does not absorb moisture. Elasticity is provided by foam polyethylene, which guarantees the sealing of seams with varying degrees of unevenness. High mechanical strength was achieved thanks to the presence of a polypropylene film that is resistant to alkali, organic solvents and acids. The reflective layer is protected from mechanical damage and oxidation. The sticky layer consists of water resistant glue, which is created on the basis of synthetic rubber. It has improved adhesion properties with different materials, which makes it possible to use the tape without preliminary surface preparation.

For reference

You can not be afraid of the fact that the vapor barrier tape is glued together in a roll, since there is a protective siliconized layer on its surface. A steam-and heat-insulating mounting tape is used for joints, joints and joints of various building structures, including installation of window blocks, wood, metal, plastic and concrete products.

Dimensions of materials

The film thickness is 20 μm, whereas the length is 15 m, and the width can vary from 90 to 200 mm. The intermediate values are 120 and 150 mm.

Specifications

The vapor barrier tape for windows has a high coefficient of thermal reflection, which reaches 95%. The coefficient of thermal conductivity is very small, and at 20 ° C it is in the range 0.038-0.051 W / m ° C. The coefficient of heat build-up during the day reaches the level of 0.48 W / (m ² ° C). The thermal resistance is 0.031 ° C / W, which is true for one millimeter of thickness. Professionals sometimes also are interested in such a characteristic as the specific heat capacity. In the case of the described vapor barrier film, this parameter is 1.95 kJ / kg ° C.

Under load within 2-5 kPa, the dynamic modulus of elasticity can vary from 0.26 to 0.6 MPa. The vapor barrier tape for windows has one more significant advantage, which is expressed in the ability to absorb extraneous noise. Thus, the sound absorption is 32 dB. The material belongs to the group of flammability G2, smoke-forming ability - D3. The density of the material can be 50 and 80 kg / m ³ .

Features of sealing tape installation

The vapor barrier tape for windows, the technical characteristics of which were presented above, should be installed according to the algorithm developed for this material. For internal sealing of the seam, a doubled vapor barrier tape based on aluminum foil is used. For reliable and easy fixation there are glued stripes on it, which are located on both sides. The tape should be installed along the entire perimeter of the window, and after it is closed by slopes that are installed in a dry way.

To install the inner vapor barrier tape in the first stage, it should be cut into separate pieces, the length of which will be equal to the width and length of the window. To this value it is necessary to add on 10 sm which will leave on angular joints. The length of the tape is overlapped, the width of which should be approximately 1/2 the width of the material.

Methods of work

The vapor barrier tape for PVC windows, the application of which is described in detail in the article, is released in the next step from the protective paper from the side of the duplicated strip. Now the material can be glued to the profile of the frame. This must be done in a stretched state, and the inner edge of the adhesive layer must coincide with the inner edge of the frame. The protective layer, which is on the butyl rubber coating, should not be removed at this stage.

To ensure that adhesion of adhesive strips has not been reduced, it is necessary to keep the structure in the open state for a shorter amount of time, and before gluing the surface of the window should be wiped with a soft cloth or paper towel.

Conclusion

The vapor barrier tape for windows, the density of which was mentioned above, should be installed in one piece, there should not be tears on flat surfaces. At the final stage, you need to install the tape on the windowsill, and then collect the window with the flaps.