Internal wall insulation · Greater London
Internal wall insulation in South Croydon
If you're planning internal wall insulation in South Croydon, start with a free survey: we measure, check the walls and confirm planning and building control for your address. Where a property in South Croydon is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in CR2 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in South Croydon
Postcode, service and a phone number is all we need.
What you get
- Insulated plasterboard, stud wall or breathable systems
- 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
Homes and walls in South Croydon
Surveys in South Croydon also cover the surrounding CR2 district and towns such as Croydon and Purley. 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.
For terraced homes in South Croydon with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- CR2
- County or area
- Greater London
- Nation
- England
- Nearby
- Croydon, Purley, Wallington, Carshalton
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 risks with internal insulation?
Insulating inside makes the masonry colder, so moisture risk rises. Weak points are where floor joists bear into the wall, window reveals and corners. A condensation risk check for the build-up, a continuous vapour control layer where specified, and returning insulation into reveals deal with most of it.
Internal wall insulation prices in South Croydon
| 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 South Croydon: 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 South Croydon?
Yes — we survey and quote internal wall insulation in South Croydon (CR2) and nearby Croydon, Purley and Wallington, with a fixed written price before any work starts.