Tyvek DuPont AirGuard Reflective Metalized Vapour Insulation 1.5x50m, 75m2

The material is used as vapor insulation with a heat reflective effect for walls and roofs, with a particularly high vapor resistance. The material is covered with an aluminum layer on the inside of the room, forming 10-15 cm overlaps. The overlaps are sealed with Tyvek Metalised tape. Country of origin: Luxembourg.

Vapor barrier films are the simplest and most commonly used construction films. They do not allow water vapor to pass through in either direction (outside - inside or vice versa) and are considered "non-breathable" films. However, this insulation provides protection against moisture, protecting both the thermal insulation material and the building structure. Vapor barriers are used for insulation of roofs, walls, and floors.

The market offers a wide range of these films, and the quality of the products varies, so several conditions must be considered when choosing a vapor barrier film. The external vapor barrier film may resemble a regular film, but this is a deceptive impression. According to European Union (EU) and Latvian building regulations, the film must be at least 0.2 mm or 200 microns thick. It must be made of primary polyethylene (polypropylene) rather than with secondary polyethylene additives, as is often the case with many of the offered vapor barrier films. This can be noticed "by eye" - if the film has secondary polyethylene additives, sand grains, impurities, etc. will be visible, which will reduce the quality of the film during operation.

A high-quality vapor barrier film must be resistant to ultraviolet radiation. During the production process, a special chemical additive is added to the mass from which the film is made, stabilizing the polyethylene molecules and extending the lifespan of the film. High-quality vapor barrier films are colorless or have a light, transparent color (e.g., blue) rather than pigmented. The film material must be supplemented with a UV stabilizer.

TECHNICAL SPECIFICATIONS

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