Rising Damp is simply, water from the ground that enters a structure by capillary action. Water that enters or affects a building through any other route can move about in various ways but is not rising damp. 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 PCA qualified surveyor who can recognise and understand the problem.
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.
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. This contamination will result in a need for the plaster to be removed and replaced using specially formulated salt resistant plasters.
It is important that rising damp is correctly diagnosed. You can be confident that our PCA qualified surveyor will provide a detailed survey report, and recommendations that will solve the problem.
Water penetration through masonry known as penetrating damp is a common problem in buildings in particular in solid wall construction. The problem is also increasingly common in buildings of cavity wall construction where cavity wall insulation has been poorly installed or used in walls that are not suitable for cavity wall insulation. Other paths through which rain can cross through a cavity wall include incorrectly positioned wall ties and mortar obstructions in the cavity. The wall ties corrode and this causes the ties to expand and crack the mortar beds of the brickwork.
Damaged or poorly maintained rain water goods, i.e. gutters and down pipes are common and cause water penetration into the building leading to disrupted finishes to walls internally.
There is a multitude of reasons why water penetrates a building; that’s why you need good honest advice from competent surveyor.
Our PCA trained surveyor will identify the problem and what work needs to be carried out to rectify this issue.