Internal wall insulation · Greater London
Internal wall insulation in Heston
We quote internal wall insulation for homes in Heston (TW5) and nearby Hounslow and Isleworth, with guide prices online and a free survey to fix the price. Where a property in Heston is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in TW5 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Heston
Postcode, service and a phone number is all we need.
What's included
- Insulated plasterboard, stud wall or breathable systems
- Loses roughly 50–100mm per insulated wall
- Needs careful detailing at floor joists, reveals and corners
- Keeps the outside of the house exactly as it is
Homes and walls in Heston
We also cover Hounslow and Isleworth, close to Heston. 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 Heston homes room by room so you keep the rest of the house usable.
- Postcode district
- TW5
- County or area
- Greater London
- Nation
- England
- Nearby
- Hounslow, Isleworth, Southall, Hayes
Permissions 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 Heston
| 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
Enquiry
Send your postcode and a few details.
Measured survey
Walls, damp, eaves, cills and services recorded.
Written price
A fixed price with the specification attached.
Work and handover
Installed, inspected and documents handed over.
Internal wall insulation in Heston: questions
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
Can I stay in the house?
Yes, but each room is out of use while it's worked on, typically 3–5 days.
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 Heston?
Yes — we survey and quote internal wall insulation in Heston (TW5) and nearby Hounslow, Isleworth and Southall, with a fixed written price before any work starts.