Internal wall insulation · West Sussex
Internal wall insulation in East Grinstead
From East Grinstead to Horley, we price internal wall insulation after a measured survey — no guesswork, and no work starts until the price is agreed in writing. We plan internal insulation in East Grinstead homes room by room so you keep the rest of the house usable.
- Free survey in RH19 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in East Grinstead
Postcode, service and a phone number is all we need.
Part of every quote
- Needs careful detailing at floor joists, reveals and corners
- Sockets, radiators, skirting and coving are moved and refitted
- Loses roughly 50–100mm per insulated wall
- Insulated plasterboard, stud wall or breathable systems
Homes and walls in East Grinstead
Surveys in East Grinstead also cover the surrounding RH19 district and towns such as Horley and Crawley. It's roughly 8 miles from East Grinstead to Crawley, the largest town in West Sussex. 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.
Exposure to wind-driven rain varies across West Sussex: sheltered town streets fare better than walls on high ground or facing the prevailing weather, and the render, beads and cill details are chosen with that in mind.
For terraced homes in East Grinstead with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- RH19
- County or area
- West Sussex
- Nation
- England
- Nearby
- Horley, Crawley, Crowborough, Haywards Heath
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 East Grinstead
| 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 East Grinstead: questions
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.
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 East Grinstead?
Yes — we survey and quote internal wall insulation in East Grinstead (RH19) and nearby Horley, Crawley and Crowborough, with a fixed written price before any work starts.