Controlling Condensation

The easiest way to insulate properties is to stop heat escaping. Unfortunately, this also stops moisture vapour escaping, (about 2 gallons per day for the average house) leading to condensation on cold surfaces.

Condensation is formed by warm air accepting moisture from within the dwelling, often by washing, cooking, clothes drying, etc. The higher the air temperature, the more moisture the air will hold. When the moist air is in contact with cold surfaces and the temperature drops, the moisture is released onto the colder surfaces ie, windows, room corners etc.

The effects of condensation are usually recognisable as black mould. Excessive moisture runs down the windows particularly to kitchens, bathrooms and bedrooms often causing decay to glazing bars and window sills.

Shaw Preservations can install a ventilation unit to control this type of dampness

The main benefits are:

• Cures condensation – wet windows, mould growth mildew and mustiness


• Far more effective than dehumidifiers


• One units deals with a whole home


• Negligible running costs


• Whisper quiet


• Totally automatic – no containers to empty.


• Provides all year round ventilation.


• Improves temperature distribution from conventional radiators


• Virtually maintenance free.