External wall insulation in Northolt
Planning external wall insulation in Northolt? The answers below cover cost, timescales and the rules that apply in England; the free survey turns them into a fixed price for your house.
Homes in and around Northolt
Northolt is in the UB5 postcode district, about 11 miles from London. 6 other towns we cover are within 25 miles.
Nearby places we cover from Northolt include Greenford (1 miles), Harrow (3 miles) and Southall (3 miles), all in England.
Your quote will name the certified system, the board thickness and the calculated U-value for your walls, not a vague 'insulation package'.
Nearby towns we cover: Greenford (1 mile), Harrow (3 miles), Southall (3 miles), Ruislip (3 miles), Wembley (3 miles), Hayes (3 miles).
External wall insulation prices in Northolt
Guide prices for external wall insulation in Northolt 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 Northolt
- EWI installation
- EPS insulated render
- Mineral wool EWI
- Phenolic EWI
- Mineral & silicate render
- Bungalow EWI
- Terraced house EWI
- Park home insulation
- Flats & low-rise blocks
- EWI surveys
- All 24 services
Rules that apply in Northolt
- 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 Northolt: questions
How much should I budget for external wall insulation in Northolt?
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 Northolt and fixes the total in writing.
Do you cover Greenford as well as Northolt?
Yes. From Northolt we also cover Greenford, Harrow and Southall, and the rest of Greater London.
How long will the work take in Northolt?
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.