Damp in crawl spaces
Moisture and water damage are one of the most common problems that affect a house holder. Damp, in itself, is completely harmless, but damp together with organic materials, such as for example in a crawlspace, often causes problems in the form of mould, fungus and odours. Which, in turn, increases the risk of allergies and asthma in children.
There are house structures with crawl spaces that are unventilated, indoor air ventilated or outdoor air ventilated. The latter type of crawl space, i.e. the outdoor air ventilated type, is usually extremely sensitive to damp.