Rising damp is a common problem in older properties either because no damp proof course (DPC) was provided at the time of building, or because a physical membrane has failed or been 'bridged'. In the majority of cases the provision of a remedial DPC is a cost effective and minimum disturbance option.
Dampness in buildings if left untreated can lead to structural deterioration; it will result in decay of timber, spoil decorations and can have problematic health effects through the development of moulds and mites.
The source of rising damp is the soil or subsoils which are always wet. Soils consist of biodegraded plant matter hence water in soils is nor pure and usually contains nitrate and chloride salts. These rise through the masonry and are left behind as water evaporates. Rising damp over a number of years can cause high levels of salts in masonry. These residual salts are hygroscopic, hence they contribute to the problems found.
Rising damp results from the capillary action of water from the ground. In the absence of an adequate DPC a zone rising to around 50cm (or more) above the skirting level along the whole length of the wall will result.
Where the DPC is damaged or breached, patches of dampness may occur. Initially the Damp Proofing Course needs to be renewed.
Platinum Chemicals provide an industry leading range of Damp Proofing Course products such as DampSolve, Dryzone, SikaMur InjectoCream, Siliconate K and more...
Platinum Building Chemicals Ltd | Damp Proofing
Dryzone | Damp Proofing