Rising Damp

What is Rising Damp?

Rising Damp is simply, water from the ground that enters a structure by capillary action. Rising damp can occur on any wall which is build into the ground (on a foundation). 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. Only rising damp can be cured by the installation of a chemical damp proof course.

Rising damp is a commonly encountered problem in some types of building, however it is often misdiagnosed. It is important that the investigations into dampness are undertaken by a trained and competent surveyor who can recognise and understand the problem. We would always recommend that the surveyor who undertakes investigations has been awarded the CSRT qualification.

What are the signs of Rising Damp?

Decayed skirting boards, crumbling or salt stained plaster, discolouration and staining, decayed timber floors, peeling paint and wallpaper are all common when walls are affected by rising damp. These defects are not always evident but when they are, a specialist inspection is always recommended.

What is involved in Rising Damp treatment?

Most types of masonry used in the walls of buildings will allow some water movement by capillary action; however, this is usually controlled by a physical barrier or damp proof course. If this physical barrier is absent, has broken down or is damaged then it is often possible to install a remedial damp proof course (DPC) to control water rising from the ground.

Water rising from the ground often introduces contaminating salts into the walls and plaster coats. These salts are hygroscopic, meaning this absorb moisture from the air, further adding to the problem. This contamination will often result in a need for the plaster to be removed and replaced using specially formulated salt resistant plasters. CSRT Qualified surveyors have the skills and experience needed to diagnose report on and repair buildings affected by rising damp

The Surveyors of Marsden Damp Services Ltd, using over 15 years experience, will carry out a survey on your property to diagnose the correct cause of dampness in your property. It is extremely important this is done, as a damp proof course will not cure other damp problems, such as condensation or lateral penetration.

We will then provide a written report and estimate. Upon receipt of acceptance of the estimate, we will arrange to carry out the damp proof works to your property, offering the ultimate professional service from start to finish.

For more information about having damp proofing works carried out, please see our FAQ section.