Explaining the meanings of some of the terms used when referring to damp, condensation and mould


Mould is fungus that forms in damp and poorly ventilated areas. Moisture, dust and fluff or debris will help mould grow. That’s why it’s important to regularly clean your home to reduce the chances of mould.

It can cause serious health issues, such as respiratory infections, allergies, or asthma.

Rising damp 

The movement of moisture from the ground rising through the building via narrow spaces. This is called capillary action.

Penetrating damp

Water getting into the external structure of the building or internal leaks. These cause damp, rot and damage to internal surfaces and structure.

Condensation (also known as condensation damp)

Condensation is the effect of warm, moist air touching a surface that’s colder than the air surrounding it.

Think about what happens when you have a cold glass of water on a hot day. Drops of water appear on the surface of the glass. This is condensation.

Things that may increase the risk of condensation are:

  • Lack of ventilation
  • Poor heating
  • Poor insulation
  • High humidity
  •  Overcrowding

Decent Homes Standard

The Decent Homes Standard was brought in by Government to ensure that all social housing are of a certain quality.

Grand Union works hard to make sure all of its homes meet, or where possible exceed the standards.