Rising damp is a type of dampness that usually occurs in older buildings. This is because bricks and mortar are very porous, as a result they soak up moisture. Rising damp is caused by the ground water being absorbed by the bricks and rising due to the capillary action of the porous wall material.
Rising damp is usually prevented by a damp-proof course. This is a plastic membrane which is placed along the mortar a few bricks high. Rising damp is identified by damp smells, rotting of floor timbers, crumbling or blistered plaster and a reduced temperature on the lower wall.
Rising damp can be treated with a damp proofing solution called dryrod, these are designed to stop the damp from rising and dry out the area.
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