External wall insulation in Dorchester
We cover Dorchester and nearby Weymouth for external wall insulation, with the survey, system choice, building control and finish all set out in one written quote.
Homes in and around Dorchester
Dorchester is in the DT1 postcode district, about 24 miles from Bournemouth. 4 other towns we cover are within 25 miles.
From Dorchester we also cover Weymouth (7 miles away), Yeovil (18 miles) and Poole (20 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: Weymouth (7 miles), Yeovil (18 miles), Poole (20 miles), Bournemouth (24 miles).
External wall insulation prices in Dorchester
Guide prices for external wall insulation in Dorchester 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 Dorchester
- EWI installation
- EPS insulated render
- Mineral wool EWI
- Wood fibre EWI
- Brick slip EWI
- Insulating lime render
- Bungalow EWI
- Terraced house EWI
- Detached house EWI
- Park home insulation
- All 24 services
Rules that apply in Dorchester
- 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 Dorchester: questions
How much should I budget for external wall insulation in Dorchester?
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 Dorchester and fixes the total in writing.
Do you cover Weymouth as well as Dorchester?
Yes. From Dorchester we also cover Weymouth, Yeovil and Poole, and the rest of Dorset.
Which EWI system suits homes in Dorchester?
It depends on the walls. Most brick houses in Dorchester 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.