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A damp-proof course (DPC) [2] is a barrier through the structure designed to prevent moisture rising by capillary action such as through a phenomenon known as rising damp. Rising damp is the effect of water rising from the ground into property. [3] The damp proof course may be horizontal or vertical. [4]
Damp (structural) Detail showing some of the causes of damp penetration. Structural dampness is the presence of unwanted moisture in the structure of a building, either the result of intrusion from outside or condensation from within the structure. A high proportion of damp problems in buildings are caused by ambient climate dependent factors ...
The improved damp-proof course arrested water ingress and with the suspended floors halted wood rot. [14] The overcrowding and deterioration of the pre-regulation terraced houses caused increasing concern. Local authorities were empowered by the Housing Act 1930 to conduct slum clearance by purchasing unfit properties compulsorily and ...
This had advantages, but in low-lying districts it would remain permanently damp. The upper floors would have been of wooden planks laid on joists; in poorer houses there were no plastered ceilings. Walls may have been plastered or not. Some houses had a slate damp-proof course but some had none. After poor weather or flooding the walls would ...
A vapor barrier (or vapour barrier) is any material used for damp proofing, typically a plastic or foil sheet, that resists diffusion of moisture through the wall, floor, ceiling, or roof assemblies of buildings and of packaging to prevent interstitial condensation. Technically, many of these materials are only vapor retarders as they have ...
Damp proofing is another aspect of waterproofing. Masonry walls are built with a damp-proof course to prevent rising damp , and the concrete in foundations needs to be damp-proofed or waterproofed with a liquid coating, basement waterproofing membrane (even under the concrete slab floor where polyethylene sheeting is commonly used), or an ...
A general term for flashing a chimney to cover the intersections of the chimney and install a damp proof course (DPC) Kickout flashing At the very bottom of a roof/wall intersection, the lowermost step flashing specially formed to deflect water away from the wall. Valley flashing In the valley of two intersecting roof planes.
Damp proofing From a merge : This is a redirect from a page that was merged into another page. This redirect was kept in order to preserve the edit history of this page after its content was merged into the content of the target page.