External wall insulation in Trowbridge
We cover Trowbridge and nearby Bath for external wall insulation, with the survey, system choice, building control and finish all set out in one written quote.
Homes in and around Trowbridge
Trowbridge is in the BA14 postcode district, about 25 miles from Swindon. 6 other towns we cover are within 25 miles.
From Trowbridge we also cover Bath (8 miles away), Frome (8 miles) and Chippenham (10 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: Bath (8 miles), Frome (8 miles), Chippenham (10 miles), Kingswood (16 miles), Whitchurch (16 miles), Brislington (17 miles).
External wall insulation prices in Trowbridge
Guide prices for external wall insulation in Trowbridge 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 Trowbridge
- EPS insulated render
- Mineral wool EWI
- Phenolic EWI
- Insulating lime render
- Mineral & silicate render
- Solid wall insulation
- Detached house EWI
- Flats & low-rise blocks
- EWI for landlords
- EWI surveys
- All 24 services
Rules that apply in Trowbridge
- 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 Trowbridge: questions
How much should I budget for external wall insulation in Trowbridge?
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 Trowbridge and fixes the total in writing.
Do you cover Bath as well as Trowbridge?
Yes. From Trowbridge we also cover Bath, Frome and Chippenham, and the rest of Wiltshire.
How long will the work take in Trowbridge?
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.