External wall insulation in Hertford
Looking for external wall insulation in Hertford? We survey homes across Hertfordshire and the SG13 postcode district, measure every wall and give you a fixed price in writing before any work is booked.
Homes in and around Hertford
Hertford is in the SG13 postcode district, about 17 miles from Watford. 6 other towns we cover are within 25 miles.
From Hertford we also cover Hoddesdon (4 miles away), Welwyn Garden City (6 miles) and Hatfield (7 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: Hoddesdon (4 miles), Welwyn Garden City (6 miles), Hatfield (7 miles), Cheshunt (7 miles), Waltham Abbey (8 miles), Harlow (8 miles).
External wall insulation prices in Hertford
Guide prices for external wall insulation in Hertford 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.
The final figure depends on wall area, the number of windows and doors, the finish and how much work the roofline, sills and services need.
Popular services in Hertford
- EWI installation
- EPS insulated render
- Brick slip EWI
- Insulating lime render
- Solid wall insulation
- Non-traditional houses
- Bungalow EWI
- Terraced house EWI
- Park home insulation
- Flats & low-rise blocks
- All 24 services
Rules that apply in Hertford
- 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 Hertford: questions
How much should I budget for external wall insulation in Hertford?
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 Hertford and fixes the total in writing.
Do you cover Hoddesdon as well as Hertford?
Yes. From Hertford we also cover Hoddesdon, Welwyn Garden City and Hatfield, and the rest of Hertfordshire.
Which EWI system suits homes in Hertford?
It depends on the walls. Most brick houses in Hertford 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.