Internal wall insulation · Berkshire
Internal wall insulation in Windsor
Quotes for internal wall insulation in Windsor list the system, the detailing and the VAT position in writing, so you know exactly what's included. Where a property in Windsor is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in SL4 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Windsor
Postcode, service and a phone number is all we need.
Included as standard
- Insulated plasterboard, stud wall or breathable systems
- Keeps the outside of the house exactly as it is
- Loses roughly 50–100mm per insulated wall
- Sockets, radiators, skirting and coving are moved and refitted
Windsor: walls, weather and approvals
We also cover Slough and Egham, close to Windsor. Windsor is about 16 miles from Reading. Homes across the South East range from inter-war semis and post-war estates, which are mostly cavity-walled, to older solid-walled cottages and Victorian town terraces.
Much of Berkshire sits in the lower wind-driven rain exposure bands, which keeps the choice of finishes wide — though hilltop, coastal and exposed gable walls can still need a tougher specification, so we check the actual site.
For terraced homes in Windsor with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- SL4
- County or area
- Berkshire
- Nation
- England
- Nearby
- Slough, Egham, Staines, Maidenhead
Approvals in England
Planning isn't usually involved with internal insulation. Building control is, once more than half of a wall is treated, and listed buildings need listed building consent.
What are the options for internal insulation?
- Insulated plasterboard — PIR or phenolic foam bonded to plasterboard, fixed to the wall and skimmed. Thinnest option.
- Insulated stud wall — a timber or metal frame filled with insulation, with a vapour control layer and plasterboard. Takes more space but runs services easily.
- Wood fibre and lime — breathable boards finished in lime plaster, for older walls that need to manage moisture.
Internal wall insulation prices in Windsor
| Item | Guide price | Notes |
|---|---|---|
| Insulated plasterboard, supplied and skimmed | £75–£110 per m²0% VAT | |
| Insulated stud wall | £90–£130 per m²0% VAT | |
| Typical bedroom, one external wall | £1,795–£2,9950% VAT | Including making good |
Confirmed by a fixed written quote after survey. 0% VAT: installing insulation in a home is zero-rated until 31 March 2027, so these figures are the total; 5% applies from 1 April 2027.
How it works
Tell us about the property
Use the quote tool or form, or call. Photos help.
Free survey
We measure, check the walls and confirm approvals.
Fixed written quote
System, details, access, exclusions and VAT in writing.
Installation
Scheduled for suitable weather, with a clear programme.
Internal wall insulation in Windsor: questions
What happens to my radiators and sockets?
They're taken off and refitted on the new wall face. Electrical work is done by a qualified electrician.
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
Is internal insulation cheaper than external?
Per m² usually yes, but the cost of moving fittings and redecorating narrows the gap on whole-house jobs.
Do you cover Windsor?
Yes — we survey and quote internal wall insulation in Windsor (SL4) and nearby Slough, Egham and Staines, with a fixed written price before any work starts.