External wall insulation in Barnet
From Barnet to Hadley Wood and Potters Bar, we plan external wall insulation around the house in front of us rather than a standard package, with guide prices online and a written quote after survey.
Homes in and around Barnet
Barnet is in the EN5 postcode district, about 10 miles from London. 6 other towns we cover are within 25 miles.
Nearby places we cover from Barnet include Hadley Wood (2 miles), Potters Bar (3 miles) and Borehamwood (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: Hadley Wood (2 miles), Potters Bar (3 miles), Borehamwood (3 miles), Finchley (3 miles), Muswell Hill (5 miles), Enfield Town (5 miles).
External wall insulation prices in Barnet
Guide prices for external wall insulation in Barnet 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.
Brick slips, cladding and mineral wool cost more than EPS and render; the survey shows you the difference side by side.
Popular services in Barnet
- EWI installation
- EPS insulated render
- Wood fibre EWI
- Brick slip EWI
- Insulated cladding
- Mineral & silicate render
- Pebbledash & dry dash EWI
- Solid wall insulation
- Bungalow EWI
- Failed EWI remediation
- All 24 services
Rules that apply in Barnet
- 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 Barnet: questions
How much should I budget for external wall insulation in Barnet?
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 Barnet and fixes the total in writing.
Do you cover Hadley Wood as well as Barnet?
Yes. From Barnet we also cover Hadley Wood, Potters Bar and Borehamwood, and the rest of Greater London.
How long will the work take in Barnet?
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.