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rising damp |
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Successful damp proofing requires a basic understanding of rising damp and the purpose of a damp proof course
RISING DAMP
Rising damp only becomes a problem if it affects vulnerable materials or finishes that are in contact with the wall. For example if it affects timbers such as joist ends, skirting boards or the bottom of door frames such as to provide wood rotting potential or if it causes wall plaster or wall coverings to deteriorate or become stained. |
DAMP PROOF COURSE Rising damp typically occurs in buildings having no built-in damp-proof course and in structures where the built-in DPC has been bridged, for example by external renders, plaster or pointing that cover over the DPC or by a change in ground level.
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With cavity wall structures, a build up of unseen debris at the base of the perimeter walls, between inner and outer skins, can reach a level that breaches the damp proof course. This may give a potentially false indication that the physical DPC has broken down.
In fact very few physical damp proof courses are liable to break down failure unless they has become damaged by structural movements or alterations that have resulted in the DPC becoming discontinuous
For free assistance in matters relating to rising damp in domestic housing phone the Twistfix technical help and advice line on 0845 123 6006 or visit www.twistfix.co.uk |