External (Solid) Wall Insulation

Download our External Wall Insulation brochure for more information.

Did you know that around 45% of the heat lost in an un-insulated solid walled 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 on your fuel bills.


External or 'Solid' Wall Insulation 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 facade.

If your home was built before or around 1920, its external walls are likely to be solid rather than Cavity walls. Cavity walls are made of two layers with a small gap or cavity between them. This cavity acts as a barrier to reduce heat flow through the wall. Solid walls have no such gap and this allows more heat 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, like cavity walls, solid walls can be insulated‚ from the inside or the outside.

External (Solid) wall insulation is an effective way to stop wasting energy and money at home. In winter, a well insulated house keeps warmth exactly where you need it‚ indoors.

Castle Point Insulation are currently involved in many External Wall Projects, Insulating & Rendering: Private Houses, Social Housing Stock, Schools, Park Homes and Commercial Properties.

All our External Wall Insulation installations are covered by an independent guarantee.








Insulate your Home in the MOST effective way today.

Call us now on 0844 888 70 10

Very efficient and friendly, they explained what they were doing!Ms H. - Harlow, Essex - 27th January 2011

Very efficient and clean. Job well done!Many Thanks!Mr A. - Billericay, Essex - Feb 2010

Good job top installers, an asset to your company.Mr B. - Hastings, East Sussex - 9th February 2011