Internal wall insulation · Greater London
Internal wall insulation in Hanworth
If you're planning internal wall insulation in Hanworth, start with a free survey: we measure, check the walls and confirm planning and building control for your address. Where a property in Hanworth is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in TW13 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Hanworth
Postcode, service and a phone number is all we need.
Part of every quote
- Sockets, radiators, skirting and coving are moved and refitted
- Can be done one room at a time during a renovation
- Insulated plasterboard, stud wall or breathable systems
- Keeps the outside of the house exactly as it is
Before we quote in Hanworth
Surveys in Hanworth also cover the surrounding TW13 district and towns such as Feltham and Sunbury-on-Thames. 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.
We plan internal insulation in Hanworth homes room by room so you keep the rest of the house usable.
- Postcode district
- TW13
- County or area
- Greater London
- Nation
- England
- Nearby
- Feltham, Sunbury-on-Thames, Hounslow, Ashford (Surrey)
Planning and building control in England
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.
Do I need Building Regulations approval?
Yes, in England and Wales once you insulate or replaster more than half of a wall's area (or more than a quarter of the building's whole envelope), it's treated as renovating a thermal element. The wall should reach about 0.30 W/m²K where practical, and building control needs to be involved.
Internal wall insulation prices in Hanworth
| 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
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 Hanworth: 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 Hanworth?
Yes — we survey and quote internal wall insulation in Hanworth (TW13) and nearby Feltham, Sunbury-on-Thames and Hounslow, with a fixed written price before any work starts.