Internal wall insulation · Greater London
Internal wall insulation in Streatham
Homeowners and landlords in Streatham can get a free survey and a fixed written quote for internal wall insulation, covering SW16 and the surrounding area. For terraced homes in Streatham with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Free survey in SW16 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Streatham
Postcode, service and a phone number is all we need.
Included as standard
- 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
- Insulated plasterboard, stud wall or breathable systems
Before we quote in Streatham
As well as Streatham itself, we quote in Mitcham, Brixton and Wimbledon. 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 Streatham homes room by room so you keep the rest of the house usable.
- Postcode district
- SW16
- County or area
- Greater London
- Nation
- England
- Nearby
- Mitcham, Brixton, Wimbledon, Battersea
Approvals 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.
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 Streatham
| 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
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 Streatham: questions
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
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.
Do you cover Streatham?
Yes — we survey and quote internal wall insulation in Streatham (SW16) and nearby Mitcham, Brixton and Wimbledon, with a fixed written price before any work starts.