External wall insulation in Windsor
From Windsor to Slough and Egham, we plan external wall insulation around the house in front of us rather than a standard package, with guide prices online and a written quote after survey.
Homes in and around Windsor
Windsor is in the SL4 postcode district, about 16 miles from Reading. 6 other towns we cover are within 25 miles.
Nearby places we cover from Windsor include Slough (2 miles), Egham (4 miles) and Staines (5 miles), all in England.
Your quote will name the certified system, the board thickness and the calculated U-value for your walls, not a vague 'insulation package'.
Nearby towns we cover: Slough (2 miles), Egham (4 miles), Staines (5 miles), Maidenhead (6 miles), Uxbridge (7 miles), Ashford, Surrey (7 miles).
External wall insulation prices in Windsor
Guide prices for external wall insulation in Windsor 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 Windsor
- Mineral wool EWI
- Phenolic EWI
- Insulated cladding
- Silicone render finish
- Pebbledash & dry dash EWI
- Non-traditional houses
- Terraced house EWI
- Flats & low-rise blocks
- EWI repairs
- EWI surveys
- All 24 services
Rules that apply in Windsor
- Planning
- On a house, external wall insulation is usually permitted development if the finish looks similar to the existing walls. Render or cladding on a house in a conservation area, National Park, National Landscape (AONB), the Broads or a World Heritage Site needs planning permission. Flats and maisonettes have no householder permitted development rights, listed buildings need listed building consent, and an Article 4 direction can remove rights locally.
- 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 Windsor: questions
How much should I budget for external wall insulation in Windsor?
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 Windsor and fixes the total in writing.
Is VAT charged on external wall insulation in Windsor?
Not on installing insulation in a home at the moment: that's zero-rated until 31 March 2027, after which the rate is due to be 5%. Work on commercial buildings is standard-rated.
Do you cover Slough as well as Windsor?
Yes. From Windsor we also cover Slough, Egham and Staines, and the rest of Berkshire.