External wall insulation in Eltham
Homeowners in Eltham look at external wall insulation for warmer rooms, lower heat loss and a new exterior in one job. Here is how it works, what it costs and which England rules apply.
Homes in and around Eltham
Eltham is in the SE9 postcode district, about 9 miles from London. 6 other towns we cover are within 25 miles.
Our Eltham surveys cover the SE9 district and the surrounding area, including Blackheath, Welling and Catford.
Most EWI failures start at the edges rather than the middle of a wall, so the quote for your Eltham home sets out how each detail will be built.
Nearby towns we cover: Blackheath (2 miles), Welling (3 miles), Catford (3 miles), Greenwich (3 miles), Bexley (4 miles), Beckenham (4 miles).
External wall insulation prices in Eltham
Guide prices for external wall insulation in Eltham run from about £109 to £175 per square metre installed, depending on system and finish; scaffolding priced per house, with VAT at 0% on homes until 31 March 2027.
Whole-house prices include standard scaffolding, beads, sills and refitting services; unusual access, footpath licences and wall repairs are quoted separately.
Popular services in Eltham
- Phenolic EWI
- Wood fibre EWI
- Insulated cladding
- Silicone render finish
- Terraced house EWI
- Detached house EWI
- Flats & low-rise blocks
- EWI for landlords
- EWI repairs
- Failed EWI remediation
- All 24 services
Rules that apply in Eltham
- Funding
- Low-income households in homes rated below EPC C can apply for Warm Homes: Local Grant where their council is taking part. The Great British Insulation Scheme closed on 31 March 2026, and ECO4 closes on 31 December 2026; its final months are for finishing and putting right existing work. Grant schemes use their own approved installers, so check a scheme's installer rules before booking; our quotes are for privately funded work unless we confirm otherwise in writing. Grants guide
- VAT
- Installing insulation in a home is zero-rated for VAT until 31 March 2027, then 5%.
Checked October 2026. Rules change, so we confirm them for your address at survey.
External wall insulation in Eltham: questions
How much should I budget for external wall insulation in Eltham?
Budget around £109–£175 per square metre of wall for the system and finish, plus scaffolding priced per house. The survey measures your walls in Eltham and fixes the total in writing.
Do you cover Blackheath as well as Eltham?
Yes. From Eltham we also cover Blackheath, Welling and Catford, and the rest of Greater London.
Which EWI system suits homes in Eltham?
It depends on the walls. Most brick houses in Eltham suit EPS with silicone render; older stone or lime-built walls suit wood fibre or insulating lime render; and blocks need mineral wool. The free survey recommends one and explains why.