A damp proof course is an impermeable barrier that usually sits horizontally at about half a foot above ground level. The barrier could be a plastic sheet or slate. It's purpose is to prevent water from rising up the masonry and onto the internal walls through capillary action. Damp proofing treatments after the initial build of the house are usually either chemical or electrical in nature.

Building prices for damp proofing : Disclaimer
Detailed Description of WorkPrice/CostUnitsLocationLast Updated
rising damp treatment for a 3 bedroom terrace house £1,500 item/job Devon 2008-03-03
Damp proof injection on all external sides of 2 bed end terrace. Replastered affected walls inside. £1,200 item/job Manchester 2007-12-07
damp proofing of a mid-terraced house £3,000 item/job Irelnad 2007-12-03
inject damp proof course on party wall (5m) + hack off + replaster £1,300 item/job Birmingham 2007-04-16
Fully inclusive Sovereign approved damp course systems. Site survey and full report. removal of contaminated plaster three stage render system and a 30 year sovereign backed Guarantee. £72 m2 Tyne & Wear 2007-02-21
remove .900 old render and plaster,drill and inject with chemical damp course,re plaster and remove rubble from site. £2,000 item/job Attleborough 2007-01-20
Digging out bay window (2mx3m) injecting fluid into wall, installing 2 air bricks £400 item/job Ilfracombe 2005-12-11
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