Building protection

Air leakage is a potential cause of structural damage in a building. When damp, warm air leaks through gaps and cracks into colder areas of the building, the vapour it contains can condense into water. This condensate provides an ideal habitat for moulds and other fungi.

The affected material can suffer damage and insulation performance can be reduced by up to a sixth, leading to further dampness – thus setting in motion a chain reaction that can eventually lead to serious damage to the structure.

To protect the longevity of the building fabric, a skilfully executed airtight building shell without leaks is essential, coupled with proper ventilation to replace moisture-laden interior air. The breathing building is a myth.

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Moisture protection >>
Installation of airtight layers >>

Ventilate properly

The best solution to replace moisture-laden interior air by oxygen-rich air from outside is controlled room air ventilation. If this is not available, rooms must be ventilated by fully opening windows and doors for a few minutes at intervals during the day.

The „breathing building“ myth

Construction physics and practical experience have shown, that air exchange between inside and outside through walls, floors and ceiling cannot provide enough fresh air. Moisture equilibrium generally occurs only within the first 8-13 mm of the interior building lining, particularly plaster, plasterboard and wood cladding.