OSB Airstop

OSB Airstop core is OSB Superfinish described by EN 300 standard as OSB/3 type (load-bearing board for use in humid conditions). It is formed by a special press with high temperature and a phenol-based film applied on the unsanded OSB board. It reduces the differences in the boards’ heterogeneity therefore giving the precise defined values of airtightness and vapor resistance. In the diffusion-open structure this allows for installation of reinforced sheathing, airtight barrier and vapor check at once. OSB focuses closely on the needs of current construction trends of modern low-energy and, in particular, passive wooden houses which have higher requirements for airtightness of external building envelope.


- Increased resistance to humid conditions
- High load-bearing capacity and stiffness for construction purposes
- High dimensional accuracy and shape stability
- High flexibility and impact resistance
- Easy workability with common woodworking tools
- Environmentally friendly, recyclable product
- Airtightness


- Internal non-load-bearing cladding of walls and ceilings, partitions
- Structural roof decking
- Load-bearing for ceilings and roofs
- Sub-floors and base boards for flooring systems
- Attic conversions or extensions


EN 300 - type OSB 3; EN 13501-1: class D-s1, d0; EN 13986:2004+A1:2015

Emission Class

E1 (EN ISO 12460-5)

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  • OSB Airstop
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