External wall insulation in Cambridge
Homeowners in Cambridge 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 Cambridge
Cambridge is in the CB1 postcode district. 6 other towns we cover are within 25 miles.
Our Cambridge surveys cover the CB1 district and the surrounding area, including Newmarket, Ely and Huntingdon.
Most EWI failures start at the edges rather than the middle of a wall, so the quote for your Cambridge home sets out how each detail will be built.
Nearby towns we cover: Newmarket (13 miles), Ely (15 miles), Huntingdon (16 miles), Haverhill (16 miles), St Neots (16 miles), Letchworth Garden City (21 miles).
External wall insulation prices in Cambridge
Guide prices for external wall insulation in Cambridge 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 Cambridge
- Mineral wool EWI
- Brick slip EWI
- Insulated cladding
- Insulating lime render
- Silicone render finish
- Solid wall insulation
- Non-traditional houses
- Bungalow EWI
- Flats & low-rise blocks
- Social housing EWI
- All 24 services
Rules that apply in Cambridge
- Building regulations
- Insulating more than half of a wall, or more than a quarter of the whole building envelope, counts as renovating a thermal element under the Building Regulations, so the wall should reach 0.30 W/m²K where that is technically, functionally and economically feasible, and building control must be involved.
- 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 Cambridge: questions
How much should I budget for external wall insulation in Cambridge?
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 Cambridge and fixes the total in writing.
Do you cover Newmarket as well as Cambridge?
Yes. From Cambridge we also cover Newmarket, Ely and Huntingdon, and the rest of Cambridgeshire.
How long will the work take in Cambridge?
Two to six weeks on site for most houses, depending on size: bungalows are quicker, detached houses longer, weather allowing. Render isn't applied in rain or frost.