Why having a damp free home is important
Suspended wooden floors above bare ground are a major source of internal moisture. Evaporation from the ground can add 40 litres of moisture a day to the average home. It’s important to keep that water in the ground, where it belongs, by installing a ground vapour barrier (made of heavy polythene) – these are required under the Government’s Healthy Homes Standards for rental properties as well as for HomeFit. For more information, see Gen Less How to tackle dampness.
Dampness - what to look for
1 of 3

Black polythene under a suspended floor. Credit: Allan McIntosh.