Internal wall insulation · Northamptonshire
Internal wall insulation in Corby
Homeowners and landlords in Corby can get a free survey and a fixed written quote for internal wall insulation, covering NN17 and the surrounding area. We plan internal insulation in Corby homes room by room so you keep the rest of the house usable.
- Free survey in NN17 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Corby
Postcode, service and a phone number is all we need.
What you get
- Needs careful detailing at floor joists, reveals and corners
- Keeps the outside of the house exactly as it is
- Sockets, radiators, skirting and coving are moved and refitted
- Loses roughly 50–100mm per insulated wall

Before we quote in Corby
As well as Corby itself, we quote in Uppingham, Kettering and Market Harborough. It's roughly 19 miles from Corby to Northampton, the largest town in Northamptonshire. Housing in the East Midlands includes Victorian terraces in the towns and cities, plenty of inter-war semis and post-war council estates, some of them system-built.
Much of Northamptonshire 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 Corby with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- NN17
- County or area
- Northamptonshire
- Nation
- England
- Nearby
- Uppingham, Kettering, Market Harborough, Oakham
Planning and building control in England
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 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 Corby
| 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
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 Corby: 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.
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
Do you cover Corby?
Yes — we survey and quote internal wall insulation in Corby (NN17) and nearby Uppingham, Kettering and Market Harborough, with a fixed written price before any work starts.