Vapour brake Bison Variable

Varibel vapour barrier - Effective polyester-based membrane

Vapour barrier Varibel is a polyester-based membrane used on the warm side of the wall or roof construction. The vapour barrier is used to air seal and to control water vapour. The vapour barrier enables a so-called bi-directional vapour transport. A certain vapour flow is permanently ensured outwards in the structure, but also inwards. This increases the ability to dry out while reducing the risk of harmful condensation and moisture accumulation.

• Polyester-based membrane for thermal insulation
• Used on the warm side of wall or roof construction
• Features airtightness and water vapour control
• Enables bi-directional vapour transport
• Favours drying out and minimises the risk of condensation and moisture accumulation