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Why increasing your property's energy efficiency can cause condensation

Nowadays this can be achieved in many ways including loft insulation, cavity wall insulation, draft proofing and new windows.

Whilst this all sounds good and helps to save money it is also creating new problems in properties, mainly condensation and mould.

When carrying out everyday tasks such as showering, washing up, drying clothes we release water vapour into the air. Due to the increased efficiency of the building, the water vapour has nowhere to escape and can lead to condensation and mould growth.

A study published earlier this month by the Mackintosh School of Architecture found three-quarters of homes surveyed had moisture levels that could lead to dust mite growth and trigger allergies.

Up to 30% of this higher moisture level is created by drying laundry on radiators and clothes horses,something that 85% of people do in the winter.

In new built or newly insulated buildings it is becoming more essential for the home owner to get a healthy balance of letting fresh air in but keeping heating costs down. This can be achieved by simply closing the door and opening a window whilst showering, to remove the damp air but not to spread colder air to the rest of the house.

In more severe cases passive vents or mechanical ventilation can be installed either locally or for the whole house.

For more advice on mould and condensation please call our technical team.