Christmas is fast approaching and already the UK has seen snow, sleet, flash flooding and storms. But what actually happens when cavity wall insulation gets wet?
There are over 5.2 million homes in the UK which are at risk of surface, river and coastal flooding. Recent weeks have seen the country being hit by a variety of bad and wet weather and whilst homeowners are attempting to recover from the effects of flooding to their properties, there is a growing concern amongst experts as to the impact this can have on insulation.
Phil Hogdson, Chartered Surveyor and Technical Director at Llewellyn Smith commented “the reality is that in most cases cavity wall insulation is not currently water repellent. In fact, once wet the insulation doesn’t work at all, as wet insulation will make any property colder because the cold and damp will cross the cavity into your property through the wet insulation.
There are small samples of properties being tested in regions prone to flooding to see if water resistant cavity wall insulation can be injected into walls which will prevent water from entering properties. Whether this will be successful remains to be seen.”
From our experience in handling cases like this and discussion with homeowners, it has become apparent that homeowners first begin to notice damp and mould in their homes during or following the winter season which indicates that bad or wet weather can indeed have a negative impact on cavity wall insulation and how well it works.
If you notice any of the 6 tell-tale signs affecting your home this winter, contact our expert team for more information.