Rising damp (structural)
Rising damp refers to the vertical flow of moisture through the masonry wall structure of a building. Water rises through walls due to capillary action.
Modern houses include damp-proof course to act as a barrier through which water cannot pass, thus helping to prevent rising damp.
Rising damp is one of the most serious problems that can affect the structure of a building. The most serious problems arise within the structure. The unwanted moisture enables the growth of various fungi in wood, causing rot. Plaster and paint deteriorate and wallpaper loosens. Stains, both from the water and from mold, mar surfaces. Externally, mortar may crumble and stains may appear on the walls. Steel, or iron, fasteners rust and loosen.
This problem is mainly related to older structures because no water proof barrier was placed between tiers of masonry.
Categories
Moisture protection | Construction | Masonry | Building defects