Internal wall insulation · Surrey
Internal wall insulation in Banstead
If you're planning internal wall insulation in Banstead, start with a free survey: we measure, check the walls and confirm planning and building control for your address. For terraced homes in Banstead with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Free survey in SM7 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Banstead
Postcode, service and a phone number is all we need.
What you get
- Loses roughly 50–100mm per insulated wall
- Keeps the outside of the house exactly as it is
- Sockets, radiators, skirting and coving are moved and refitted
- Can be done one room at a time during a renovation
Local considerations in Banstead
We also cover Sutton and Epsom, close to Banstead. Banstead sits around 15 miles from Woking. Homes across the South East range from inter-war semis and post-war estates, which are mostly cavity-walled, to older solid-walled cottages and Victorian town terraces.
Much of Surrey 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.
Where a property in Banstead is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Postcode district
- SM7
- County or area
- Surrey
- Nation
- England
- Nearby
- Sutton, Epsom, Coulsdon, Carshalton
Permissions 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 Banstead
| 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
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 Banstead: 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 Banstead?
Yes — we survey and quote internal wall insulation in Banstead (SM7) and nearby Sutton, Epsom and Coulsdon, with a fixed written price before any work starts.