Rising damp, penetrating damp and condensation are the three most common types of damp that can affect your home. But each needs to be treated in different ways, and the costs can vary dramatically, so it’s important to know what type of damp is affecting your home before you try to get it fixed.
If you have had Cavity Wall Insulation fitted, then that could be a whole bigger issue.
Our image gallery below will help you to identify the type of damp or mould, and you can scroll down to find out what could be causing it. Once you’ve done this, you can then find out how to prevent it.
Living in a property with mould can be bad for your health, so it’s important to get it sorted as soon as possible. The worse the situation gets, the more it’s likely to cost to remove and repair any damage.
What is a damp-proof course?
The walls of houses generally have a barrier in them to stop rising damp from getting into walls. This is often a horizontal plastic or bitumen felt strip in the wall, 15cm above the ground level. Building regulations came into force in 1875, specifying that these had to be built into houses, so older houses may not have one.
What is a damp-proof membrane?
A damp-proof membrane (DPM) is a membrane material applied to prevent moisture transmission. A common example is polyethylene sheeting laid under a concrete slab to prevent the concrete from gaining moisture through capillary action. A DPM may be used for the DPC.
What is a chemical damp proof course?
A chemical damp course is installed by drilling holes at least 15 centimetres above the ground level fairly close together and feeding in a chemical compound that repels damp. Most houses that have had this done, you will be able to see the drill holes along the building on all exposed sides.