Damp proof course & rising damp?

A Damp Proof Course is a barrier that is installed at the lower level of the wall of a building to prevent water from rising from ground level. This barrier, effectively stops, what is known as, rising damp.

Mild cases of rising damp may only get spotted following a building survey, in more serious cases visible damp patches, along with hygroscopic salts can be seen on the surface of the walls.

Rising damp – tell tale signs!

  • Peeling wallpaper
  • Damp or lifting plaster
  • A tide line on the walls
  • Damp or stained skirting boards
  • Brown/yellow stains on the walls
  • Furry, raised, powdery residue on plaster
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Rising Damp for Damp proof course page
Injecting a damp proof course

Injecting damp proof course

Fitting a damp proof course requires a number of steps for permanent elimination. Although the steps are fairly standard, each survey and analysis will result in a thorough plan, which may include:

  • Removal of any damp plaster
  • Adding a salt neutraliser to walls to dissolve all salts
  • Chemical injections to repair the damp proof course
  • Applying a waterproof interior render
  • Finishing the walls with a smooth skim coat plaster
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