External wall insulation in High Wycombe
Looking for external wall insulation in High Wycombe? We survey homes across Buckinghamshire and the HP13 postcode district, measure every wall and give you a fixed price in writing before any work is booked.
Homes in and around High Wycombe
High Wycombe is in the HP13 postcode district. 6 other towns we cover are within 25 miles.
From High Wycombe we also cover Amersham (6 miles away), Maidenhead (7 miles) and Chesham (8 miles).
Whatever the exposure of your street, the details at sills, eaves and the base of the wall are what keep an EWI system dry, and we draw them before work starts.
Nearby towns we cover: Amersham (6 miles), Maidenhead (7 miles), Chesham (8 miles), Chalfont St Peter (8 miles), Gerrards Cross (9 miles), Slough (11 miles).
External wall insulation prices in High Wycombe
Guide prices for external wall insulation in High Wycombe 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.
What moves the price most is the board and finish you choose, the access around the house, and details such as roofline extensions or moving a gas meter.
Popular services in High Wycombe
- EWI installation
- Phenolic EWI
- Brick slip EWI
- Silicone render finish
- Solid wall insulation
- Non-traditional houses
- Semi-detached EWI
- Social housing EWI
- EWI for landlords
- Failed EWI remediation
- All 24 services
Rules that apply in High Wycombe
- 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 High Wycombe: questions
How much should I budget for external wall insulation in High Wycombe?
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 High Wycombe and fixes the total in writing.
Do you cover Amersham as well as High Wycombe?
Yes. From High Wycombe we also cover Amersham, Maidenhead and Chesham, and the rest of Buckinghamshire.
How long will the work take in High Wycombe?
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.