Rising Damp

Rising Damp

Rising damp can be caused by a variety of factors such as the failure of an existing damp proofing course (DPC) or what is termed ‘bridging’ of that DPC due to different levels of the floor on the inside and outside of the property which can cause the damp proofing course to fail. You may find that older buildings have never had a damp proofing course at all. Sometimes, damp in walls may be down to condensation and it is vital that you have a specialist who can diagnose the correct cause of damp.

Rising damp problems

Rising damp is unsightly as well as being unhealthy and often leads to timber decay and loss of heat from your property. Rising damp carries hygroscopic salts, which absorb moisture from the atmosphere, which in turn causes damp in walls in conditions of high humidity which is often the case in many homes. The presence of these salts then breaks down internal plaster and leaves residue on internal walls which is impossible to eliminate without specialist treatment.

Rising damp is one of the main problems which can be resolved quite easily by our specialists at Willow Renovations. Rising Damp can cause problems in exterior and interior walls in ground-floor rooms in situations where:

  • There is no Damp Proof Course (DPC), for instance in older buildings.
  • The DPC is faulty or ineffective due to age.
  • Where external ground levels are high and bridge the DPC.

Signs of rising damp

Damp can affect any building and looking out for any signs of damp can enable you to get the rising damp treated before it spreads.

  • Tidal marks up to 1.2 metres high on the wall
  • Mould on the walls or furniture
  • Flaking or peeling wallpaper
  • Rotting floorboards
  • Decaying skirting boards
  • Plaster that has lost its structural integrity

Testing for rising damp

Moisture readings obtained from around the base of the walls will indicate if damp is present. Our specialist can measure this for you using a device to determine the nature of the moisture problem and what if any, damp proofing treatment is needed.

Fixing rising damp problems

It is important to resolve any other causes of damp that potentially exist within the property, such as loose roof slates and tiles, defective flashings, poor gutters, downpipe problems, cracked render, defective pointing or damaged brickwork.


It is rare for any damp proof course to be undertaken without the need to replaster some if not all of the affected walls. Your Willow Renovations specialist will advise what needs to be done to achieve the best possible outcome.

Damp proofing your home

Where rising damp is diagnosed, Willow Renovations will install a remedial damp proof course to resolve your damp issues.

If there are any other issues, such as damp marks higher than 1.5 metres or mould around window frames, then you might have a penetrating damp or condensation problem. In any case, Willow Renovations can assess your home and undertake the necessary treatments to eradicate and prevent further damp problems.