Breathable membranes and moisture control

Photo showing the Retrovive breathable membrane in place before the cellulose-fibre is blown in

Our cellulose insulation, and the membrane we use in the Retrovive system to hold it in place, are ‘breathable’. This is critical to avoid moisture building up.

Humidity constantly varies according to different temperatures, how dry or wet the weather is and how much cooking, washing, showering, breathing etc., is happening in the house. It is vital that this moisture in the air is not trapped and allowed to build up as this can damage structural timbers and create mould issues.

The Retrovive underfloor insulation system controls this by allowing water vapour to permeate through it and dissipate via the ventilated space below. Even better, cellulose-fibre material also acts as a buffer, absorbing and releasing this moistures in a way that helps to even out the humidity and make for a more comfortable internal environment.

Some alternative insulation systems will block vapour movement, with potentially disastrous consequences, and others will not give the buffering benefit. Whereas, we are careful to ensure the ventilation under the floor is good.

We even have various techniques to duct airflow from external airbricks to down under the floor if necessary.

To find out more, and discuss your project, send us a message today.