External wall insulation in Hitchin
Every external wall insulation job in Hitchin starts with a free survey of your walls: what they are built from, how they have weathered, and what the details around windows, eaves and services will need.
Homes in and around Hitchin
Hitchin is in the SG4 postcode district, about 21 miles from Watford. 6 other towns we cover are within 25 miles.
Our Hitchin surveys cover the SG4 district and the surrounding area, including Letchworth Garden City, Stevenage and Luton.
Most EWI failures start at the edges rather than the middle of a wall, so the quote for your Hitchin home sets out how each detail will be built.
Nearby towns we cover: Letchworth Garden City (3 miles), Stevenage (5 miles), Luton (7 miles), Harpenden (10 miles), Ampthill (10 miles), Welwyn Garden City (11 miles).
External wall insulation prices in Hitchin
Guide prices for external wall insulation in Hitchin 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 Hitchin
- EPS insulated render
- Phenolic EWI
- Brick slip EWI
- Insulated cladding
- Silicone render finish
- Mineral & silicate render
- Solid wall insulation
- Bungalow EWI
- Terraced house EWI
- Semi-detached EWI
- All 24 services
Rules that apply in Hitchin
- 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 Hitchin: questions
How much should I budget for external wall insulation in Hitchin?
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 Hitchin and fixes the total in writing.
Do you cover Letchworth Garden City as well as Hitchin?
Yes. From Hitchin we also cover Letchworth Garden City, Stevenage and Luton, and the rest of Hertfordshire.
Which EWI system suits homes in Hitchin?
It depends on the walls. Most brick houses in Hitchin 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.