Internal wall insulation · Greater London
Internal wall insulation in Northolt
Looking for internal wall insulation in Northolt? We survey homes across Northolt and the UB5 area, then give you a fixed written price before any work starts. We plan internal insulation in Northolt homes room by room so you keep the rest of the house usable.
- Free survey in UB5 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Northolt
Postcode, service and a phone number is all we need.
What's included
- Insulated plasterboard, stud wall or breathable systems
- Can be done one room at a time during a renovation
- Needs careful detailing at floor joists, reveals and corners
- Loses roughly 50–100mm per insulated wall
What we look for in Northolt
We also cover Greenford and Harrow, close to Northolt. 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 Northolt with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- UB5
- County or area
- Greater London
- Nation
- England
- Nearby
- Greenford, Harrow, Southall, Ruislip
England: planning and regulations
Planning isn't usually involved with internal insulation. Building control is, once more than half of a wall is treated, and listed buildings need listed building consent.
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 Northolt
| 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.
What happens next
Tell us about the property
Use the quote tool or form, or call. Photos help.
Free survey
We measure, check the walls and confirm approvals.
Fixed written quote
System, details, access, exclusions and VAT in writing.
Installation
Scheduled for suitable weather, with a clear programme.
Internal wall insulation in Northolt: questions
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.
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.
Do you cover Northolt?
Yes — we survey and quote internal wall insulation in Northolt (UB5) and nearby Greenford, Harrow and Southall, with a fixed written price before any work starts.