External wall insulation (EWI) is an effective way to reduce heating costs and energy used at home in the winter. It also works the other way in the summer keeping the house temperature cool. A well-insulated house keeps warmth exactly where you need it? indoors.
Generally we would advise on an insulation thickness of 50mm.
EWI also protects the structure of your house from the elements, increasing your houses life expectancy.
External Wall Insulation (EWI) is a form of insulation fixed to the exterior of an existing or new dwelling. This is then rendered to give a protective and decorative coating to the existing elevation.
If your home was built before or around 1900?s, its external walls are likely to be solid rather than Cavity walls. Cavity walls are made of two layers with cavity between them. This cavity acts as a barrier to reduce heat flow/moisture through the wall. Solid walls have no such gap and this allows more heat/moisture to pass through them than through cavity walls. In fact, twice as much heat can be lost through an un-insulated solid wall as through an un-insulated cavity wall. The good news is that solid walls can be insulated? from the inside or the outside.
45% of the heat lost in an un-insulated solid wall home is through the walls, insulating your solid walls can reduce heat loss and can save you around ?400.00 to ?500.00 a year.