Internal wall insulation · Norfolk
Internal wall insulation in Dereham
From Dereham to Norwich, we price internal wall insulation after a measured survey — no guesswork, and no work starts until the price is agreed in writing. Where a property in Dereham is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in NR19 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Dereham
Postcode, service and a phone number is all we need.
What you get
- Keeps the outside of the house exactly as it is
- Loses roughly 50–100mm per insulated wall
- Sockets, radiators, skirting and coving are moved and refitted
- Insulated plasterboard, stud wall or breathable systems
Homes and walls in Dereham
As well as Dereham itself, we quote in Norwich, Thetford and King's Lynn. Dereham is about 16 miles from Norwich. The East of England has a mix of post-war estates, inter-war semis and older solid brick and flint cottages, with some system-built council homes on post-war estates.
Much of Norfolk 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 Dereham homes room by room so you keep the rest of the house usable.
- Postcode district
- NR19
- County or area
- Norfolk
- Nation
- England
- Nearby
- Norwich, Thetford, King's Lynn, Bury St Edmunds
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.
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 Dereham
| 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
Get a guide price
Try the online quote tool for a ballpark figure.
Book the survey
A visit at a time that suits you.
Agree the quote
Nothing starts until you've signed the written price.
We do the work
Planned around weather, with you kept informed.
Internal wall insulation in Dereham: 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 Dereham?
Yes — we survey and quote internal wall insulation in Dereham (NR19) and nearby Norwich, Thetford and King's Lynn, with a fixed written price before any work starts.