Summary
Almost 50% of heat in solid-walled houses is lost through external walls, making insulation essential for warmth retention, damp reduction, and overall comfort.
- Target Properties: Solid wall homes, concrete or steel-framed units, and older stone/brick houses can benefit from external wall insulation.
- Permitting: Check local regulations for required permissions; not typically allowed on listed buildings or in conservation areas.
- Installation Process: Involves applying insulation boards, a mesh and flexible render coat, and a final colour coat, ideally done in dry weather.
- Savings: Can save approximately £800-950 annually on heating bills, depending on the type of heating.
- How long will it last: External wall insulation is a long-term investment. Most system designers (manufacturers) will be able to provide a warrantee of, or in excess of 25 years.