Solid wall insulation · Surrey
Solid wall insulation in Ashford (Surrey)
Looking for solid wall insulation in Ashford (Surrey)? We survey homes across Ashford (Surrey) and the TW15 area, then give you a fixed written price before any work starts. For Ashford (Surrey) homeowners weighing external against internal insulation, the survey sets out both with prices.
- Free survey in TW15 and nearby
- Guide price from £75 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Ashford (Surrey)
Postcode, service and a phone number is all we need.
What's included
- External insulation keeps room sizes and treats cold bridges well
- In England and Wales, Building Regulations apply when more than half of a wall is treated
- Both can be done in stages, elevation by elevation or room by room
- Internal insulation suits single rooms or where the outside can't change

Before we quote in Ashford (Surrey)
We cover Ashford (Surrey) and nearby Staines, Feltham and Sunbury-on-Thames. It's roughly 9 miles from Ashford (Surrey) to Woking, the largest town in Surrey. 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.
For solid-walled homes in Ashford (Surrey), we check wall thickness and age first to confirm there's no cavity to fill.
- Postcode district
- TW15
- County or area
- Surrey
- Nation
- England
- Nearby
- Staines, Feltham, Sunbury-on-Thames, Hanworth
Planning and building control in England
Before quoting in Ashford (Surrey), we check whether the property is in a conservation area, under an Article 4 direction or listed, because that decides whether changing the outside needs planning permission.
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.
How can I tell if my walls are solid?
Measure the wall thickness at a window or door: about 225mm (9 inches) of brick usually means solid, while 260mm or more often means a cavity. On exposed brick, a pattern with bricks laid end-on (headers) every few courses points to solid construction. Stone walls are usually solid regardless of thickness. Age is a strong clue too — most homes built before the 1920s are solid-walled.
Solid wall insulation prices in Ashford (Surrey)
| 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.
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.
Solid wall insulation in Ashford (Surrey): 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 Ashford (Surrey)?
Yes — we survey and quote solid wall insulation in Ashford (Surrey, TW15) and nearby Staines, Feltham and Sunbury-on-Thames, with a fixed written price before any work starts.