Solid wall insulation · Buckinghamshire
Solid wall insulation in Gerrards Cross
Quotes for solid wall insulation in Gerrards Cross list the system, the detailing and the VAT position in writing, so you know exactly what's included. On solid-walled houses in Gerrards Cross, the gable or the most weather-exposed wall is often the place to start.
- Free survey in SL9 and nearby
- Guide price from £75 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Gerrards Cross
Postcode, service and a phone number is all we need.
What's included
- Both can be done in stages, elevation by elevation or room by room
- In England and Wales, Building Regulations apply when more than half of a wall is treated
- External insulation keeps room sizes and treats cold bridges well
- Solid walls can lose heat roughly twice as fast as an insulated cavity wall

Before we quote in Gerrards Cross
We also cover Chalfont St Peter and Uxbridge, close to Gerrards Cross. It's roughly 33 miles from Gerrards Cross to Milton Keynes, the largest town in Buckinghamshire. 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 Buckinghamshire 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 Gerrards Cross homeowners weighing external against internal insulation, the survey sets out both with prices.
- Postcode district
- SL9
- County or area
- Buckinghamshire
- Nation
- England
- Nearby
- Chalfont St Peter, Uxbridge, Slough, Ruislip
Permissions in England
Planning in Gerrards Cross follows England's national rules: similar-looking finishes on houses are usually permitted, while flats, commercial premises, conservation areas and streets under an Article 4 direction need an application.
Building control applies once more than half of a wall is insulated or re-rendered, or more than a quarter of the whole building envelope, and your written quote says how that's handled.
What does solid wall insulation cost?
External systems run at roughly £105–£210 per m² of wall depending on the board and finish. Internal insulation is roughly £75–£130 per m², plus the cost of moving radiators, sockets and kitchen units.
Solid wall insulation prices in Gerrards Cross
| Item | Guide price | Notes |
|---|---|---|
| External (EWI) | £105–£210 per m²0% VAT | By board and finish |
| Internal (IWI) | £75–£130 per m²0% VAT | Plus making good |
| Survey and written recommendation | Free with a quote |
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.
Solid wall insulation in Gerrards Cross: questions
Is solid wall insulation worth it?
For many solid-walled homes it's one of the biggest single improvements to comfort, because the walls are often the largest heat-loss area. Savings depend on the home and heating, so we don't promise a figure.
Does solid wall insulation cause condensation?
It can if detailed poorly, particularly internally. A condensation risk check for the proposed build-up and careful detailing at joists, reveals and corners avoid it.
Can I do one wall at a time?
Yes. Many owners start with the coldest or most exposed elevation, often a gable end.
Do you cover Gerrards Cross?
Yes — we survey and quote solid wall insulation in Gerrards Cross (SL9) and nearby Chalfont St Peter, Uxbridge and Slough, with a fixed written price before any work starts.