Damp-proofing & waterproofing
Affects of rising damp
RISING DAMP
True rising damp typically occurs when a building has not been constructed with any form of damp-proof course. The effects are usually progressive over a long period of time: mineral salts build up in the masonry and plaster, causing damage.
Active rising damp can be controlled or eliminated by the installation of a remedial damp-proof course (DPC) at the base of affected walls. David Reynolds installs two main types of remedial damp-proof course:
Chemical DPC systems. We use a range of liquid or cream based water-repellents, which are installed at the base of affected walls via a run of small holes drilled into the masonry.
Electro-Osmosis (Lectros system). This involves the introduction of a very slight positive electrical charge through the base of a wall, which reverses the effect of capillary action.