External wall insulation in Letchworth Garden City
Looking for external wall insulation in Letchworth Garden City? We survey homes across Hertfordshire and the SG6 postcode district, measure every wall and give you a fixed price in writing before any work is booked.
Homes in and around Letchworth Garden City
Letchworth Garden City is in the SG6 postcode district, about 24 miles from Watford. 6 other towns we cover are within 25 miles.
From Letchworth Garden City we also cover Hitchin (3 miles away), Stevenage (5 miles) and Luton (11 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: Hitchin (3 miles), Stevenage (5 miles), Luton (11 miles), Ampthill (12 miles), Welwyn Garden City (12 miles), Harpenden (13 miles).
External wall insulation prices in Letchworth Garden City
Guide prices for external wall insulation in Letchworth Garden City 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.
Whole-house prices include standard scaffolding, beads, sills and refitting services; unusual access, footpath licences and wall repairs are quoted separately.
Popular services in Letchworth Garden City
- EWI installation
- Phenolic EWI
- Wood fibre EWI
- Insulating lime render
- Pebbledash & dry dash EWI
- Bungalow EWI
- Terraced house EWI
- Detached house EWI
- Park home insulation
- EWI for landlords
- All 24 services
Rules that apply in Letchworth Garden City
- 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 Letchworth Garden City: questions
How much should I budget for external wall insulation in Letchworth Garden City?
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 Letchworth Garden City and fixes the total in writing.
Do you cover Hitchin as well as Letchworth Garden City?
Yes. From Letchworth Garden City we also cover Hitchin, Stevenage and Luton, and the rest of Hertfordshire.
Which EWI system suits homes in Letchworth Garden City?
It depends on the walls. Most brick houses in Letchworth Garden City 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.