External wall insulation in St Helens
We cover St Helens and nearby Prescot for external wall insulation, with the survey, system choice, building control and finish all set out in one written quote.
Homes in and around St Helens
St Helens is in the WA10 postcode district, about 10 miles from Liverpool. 6 other towns we cover are within 25 miles.
From St Helens we also cover Prescot (3 miles away), Ashton-in-Makerfield (4 miles) and Huyton (5 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: Prescot (3 miles), Ashton-in-Makerfield (4 miles), Huyton (5 miles), Newton-le-Willows (5 miles), Great Sankey (6 miles), Golborne (6 miles).
External wall insulation prices in St Helens
Guide prices for external wall insulation in St Helens 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.
Bays, gables, conservatory junctions and narrow side passages take longer than plain walls, so the survey prices your actual house rather than an average.
Popular services in St Helens
- EPS insulated render
- Mineral wool EWI
- Phenolic EWI
- Brick slip EWI
- Insulated cladding
- Mineral & silicate render
- Terraced house EWI
- Flats & low-rise blocks
- Social housing EWI
- EWI for landlords
- All 24 services
Rules that apply in St Helens
- 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 St Helens: questions
How much should I budget for external wall insulation in St Helens?
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 St Helens and fixes the total in writing.
Do you cover Prescot as well as St Helens?
Yes. From St Helens we also cover Prescot, Ashton-in-Makerfield and Huyton, and the rest of Merseyside.
How long will the work take in St Helens?
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.