Wood fibre EWI · Surrey
Wood fibre insulation for older homes in Sunbury-on-Thames
If you're planning wood fibre external wall insulation in Sunbury-on-Thames, start with a free survey: we measure, check the walls and confirm planning and building control for your address. For older stone and early brick properties in Sunbury-on-Thames, we look at a wood fibre and lime build-up first.
- Free survey in TW16 and nearby
- Guide price from £150 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Sunbury-on-Thames
Postcode, service and a phone number is all we need.
What you get
- High density gives good protection from summer heat
- Made from a renewable material with low embodied carbon
- Compatible with lime renders used on traditional buildings
- Vapour-open and hygroscopic — buffers moisture rather than trapping it
Homes and walls in Sunbury-on-Thames
We cover Sunbury-on-Thames and nearby Walton-on-Thames, Hanworth and Ashford (Surrey). Sunbury-on-Thames is about 8 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 Sunbury-on-Thames is in a conservation area, we check the council's position on render before suggesting wood fibre EWI.
- Postcode district
- TW16
- County or area
- Surrey
- Nation
- England
- Nearby
- Walton-on-Thames, Hanworth, Ashford (Surrey), Feltham
Permissions in England
For a house in Sunbury-on-Thames, external insulation or render is often permitted development if it looks similar to the existing walls; conservation areas, flats, commercial buildings and listed buildings need permission or consent, so we check your address first.
Insulating or re-rendering more than half of a wall's area brings in Part L of the Building Regulations, so building control is notified and the wall is upgraded to about 0.30 W/m²K where practical.
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 Sunbury-on-Thames
| 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 Sunbury-on-Thames: questions
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.
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.
Do you cover Sunbury-on-Thames?
Yes — we survey and quote wood fibre external wall insulation in Sunbury-on-Thames (TW16) and nearby Walton-on-Thames, Hanworth and Ashford (Surrey), with a fixed written price before any work starts.