Wood fibre EWI · Surrey
Wood fibre insulation for older homes in Banstead
Looking for wood fibre external wall insulation in Banstead? We survey homes across Banstead and the SM7 area, then give you a fixed written price before any work starts. For period homes in Banstead, the survey looks closely at existing lime mortars and any cement patching that may trap moisture.
- Free survey in SM7 and nearby
- Guide price from £150 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Banstead
Postcode, service and a phone number is all we need.
What's included
- High density gives good protection from summer heat
- Made from a renewable material with low embodied carbon
- Often the most suitable EWI where planning allows on older properties
- Thicker than foam for the same U-value

Before we quote 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.
If your home in Banstead is in a conservation area, we check the council's position on render before suggesting wood fibre EWI.
- Postcode district
- SM7
- County or area
- Surrey
- Nation
- England
- Nearby
- Sutton, Epsom, Coulsdon, Carshalton
Approvals in England
Before quoting in Banstead, 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.
Why do older walls need breathable insulation?
Stone and early brick walls were built with lime mortars and renders that let moisture in and out. Sealing them with impermeable materials can trap water in the wall, leading to damp and frost damage. Wood fibre keeps the build-up open to vapour, and its ability to absorb and release moisture helps the wall stay in balance.
Wood fibre insulation for older homes prices in Banstead
| Item | Guide price | Notes |
|---|---|---|
| Wood fibre + lime render system | £150–£210 per m²0% VAT | Excluding scaffold |
| Cottage, about 90 m² of wall | £15,300–£22,1000% VAT | Including scaffold |
| Lime render only (no insulation) | £78–£132 per m²inc VAT | See lime render |
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. Prices include VAT at 20%.
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.
Wood fibre EWI in Banstead: questions
Is wood fibre worth the extra cost?
On older solid walls the main benefit is moisture safety rather than raw U-value. If the wall needs to breathe, the cheaper option can cost more later.
Can wood fibre go on a stone wall?
Yes, after levelling. Rubble stone is often uneven, so a levelling coat or adapted fixing method is used first.
Is wood fibre insulation fireproof?
No — it's a timber product. It chars rather than flaming readily, but it is combustible, so it's used on low-rise buildings within a tested system and never where non-combustible materials are required.
Do you cover Banstead?
Yes — we survey and quote wood fibre external wall insulation in Banstead (SM7) and nearby Sutton, Epsom and Coulsdon, with a fixed written price before any work starts.