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Advice and recommendations on the correct moisture protection and wood preservation can be found on this page. Frequently recurring and longer lasting high material moisture levels can cause damage to the wood. This particularly affects roofs and external walls, which are exposed to weather conditions on the outside and can also be affected by water vapour diffusion and convection of warm room air . Dry and safe constructions can be realised by taking a few simple measures.
The airtight level of a component does not allow the ambient air, driven by pressure differences, to flow from the inside to the outside via the component cross-section. This convection leads to heat loss and, in the worst case, to condensation in the cross-section of the building component.
In our climatic region, the diffusion flow occurs mainly in the winter period between warm indoor air and cold outdoor air. In vapour-permeable timber frame constructions, this can be reduced by the vapour-retarding properties of the EGGER OSB to such an extent that no condensation occurs on the outside.
With exterior cladding made of vapour-permeable wood-based materials, such as Egger DHF, a flow of cold outside air through the insulation level is avoided. Only tight board joints with a tongue and groove profile are sufficient to form this windproof level.