Diffusion films

Diffusion membranes combine the properties of multiple films and are essentially composite membranes. These membranes simultaneously protect thermal insulation and wooden structures from water impact as a waterproofing material and from energy losses due to wind impact as wind insulation. The structure of these membranes allows water vapor to freely move outwards, but prevents moisture from the outside from entering the thermal insulation, thus ensuring its effective performance. Diffusion membranes can have two, three, or more layers. Two-layer membranes are less resistant to mechanical damage, so they require more attention during installation. Three-layer films are more durable, as the diffusion layer is covered with a special protective layer. Four-layer diffusion membranes are particularly durable, as they incorporate a special reinforcement during the manufacturing process. This gives the membrane additional strength and elasticity. High vapor diffusion is ensured by micro-pores with a diameter of 1-2 microns evenly distributed across the membrane surface.

Diffusion membranes are widely used in pitched roof structures, especially in attic conversions. The use of membranes is optimal for converting cold attics into attic rooms without altering the existing rafter structures. All diffusion membranes can be used as wind insulation films. Diffusion membranes are applied tightly to the thermal insulation layer, with overlaps of 10-15 cm. It should be noted that diffusion membranes are applied with the colored side facing upwards. However, if the roof slope is less than 25%, the overlap areas must be sealed with frost and moisture-resistant adhesive tapes to ensure optimal use of the membrane.

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