Internal wall insulation · Greater London
Internal wall insulation in Feltham
From Feltham to Hanworth, we price internal wall insulation after a measured survey — no guesswork, and no work starts until the price is agreed in writing. We plan internal insulation in Feltham homes room by room so you keep the rest of the house usable.
- Free survey in TW13 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Feltham
Postcode, service and a phone number is all we need.
What the job covers
- Sockets, radiators, skirting and coving are moved and refitted
- Can be done one room at a time during a renovation
- Loses roughly 50–100mm per insulated wall
- Keeps the outside of the house exactly as it is
Before we quote in Feltham
As well as Feltham itself, we quote in Hanworth, Ashford (Surrey) and Hounslow. London's housing includes a large stock of Victorian and Edwardian solid-wall terraces, inter-war semis and post-war blocks, and conservation areas cover many streets — so planning is often the first question for external work.
Much of Greater London 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.
Where a property in Feltham is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Postcode district
- TW13
- County or area
- Greater London
- Nation
- England
- Nearby
- Hanworth, Ashford (Surrey), Hounslow, Sunbury-on-Thames
England: planning and regulations
Internal insulation rarely needs planning permission, but in England and Wales insulating or replastering more than half of a wall's area involves building control, and listed buildings need consent for internal changes that affect their character.
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 Feltham
| 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.
From enquiry to finished wall
Get a guide price
Try the online quote tool for a ballpark figure.
Book the survey
A visit at a time that suits you.
Agree the quote
Nothing starts until you've signed the written price.
We do the work
Planned around weather, with you kept informed.
Internal wall insulation in Feltham: 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.
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.
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
Do you cover Feltham?
Yes — we survey and quote internal wall insulation in Feltham (TW13) and nearby Hanworth, Ashford (Surrey) and Hounslow, with a fixed written price before any work starts.