Description
Unilin DURÉLIS VapourBlock
Durelis is a guaranteed airtight board, only 12mm depth, and is highly recommended by airtightness expert Paul Jennings as the best airtight product currently available, achieving consistent best test results for Passivhaus projects. Also suitable as the racking board on timber frame constructions, and acts as the vapour control layer, eliminating the need for membranes. Three functions in one is why we use this board as an essential component in our PH15 System.
Durélis VapourBlock is a 12mm, 2400 x 1196mm high density chipboard with a factory fitted transparent airtightness and vapour control layer on one side. VapourBlock is for internal use. This board is specifically designed as a more reliable airtightness and vapour control layer compared to conventional plywood or OSB. It is manufactured with a high proportion of recycled waste timber supplemented by FSC and PEFC certified local timber.
- Durélis VapourBlock guarantees a consistently high level of airtightness compared to OSB3.
- Durélis VapourBlock combines the benefits of high racking strength, with a high level of vapour resistance – with a μ value of 240.
- Durélis VapourBlock is classified as a structural board which is suitable for use in humid conditions (P5) equivalent to OSB3
- Durélis VapourBlock is suitable for use in service class 2 (restrictions in temperature and ambient humidity) and can be used in biological hazard classes 1 and 2 of EN 335-3
Durélis VapourBlock is also suitable for load-bearing applications in humid conditions (Service Class 2 to EN 1995-1- 1 )
The board is easy to saw and screw into, and has a low formaldehyde emission (E1 class)
