Wood fibre EWI · Somerset
Wood fibre insulation for older homes in Yeovil
If you're planning wood fibre external wall insulation in Yeovil, start with a free survey: we measure, check the walls and confirm planning and building control for your address. For period homes in Yeovil, the survey looks closely at existing lime mortars and any cement patching that may trap moisture.
- Free survey in BA20 and nearby
- Guide price from £150 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Yeovil
Postcode, service and a phone number is all we need.
Part of every quote
- Often the most suitable EWI where planning allows on older properties
- Thicker than foam for the same U-value
- High density gives good protection from summer heat
- Made from a renewable material with low embodied carbon

What we look for in Yeovil
As well as Yeovil itself, we quote in Bridport, Dorchester and Bridgwater. Yeovil sits around 32 miles from Bath. The South West has many stone and solid-walled cottages, exposed coastal properties and a share of post-war system-built houses, including types such as the Cornish Unit.
Exposure to wind-driven rain varies across Somerset: 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 older stone and early brick properties in Yeovil, we look at a wood fibre and lime build-up first.
- Postcode district
- BA20
- County or area
- Somerset
- Nation
- England
- Nearby
- Bridport, Dorchester, Bridgwater, Taunton
England: planning and regulations
Before quoting in Yeovil, 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 Yeovil
| 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
Enquiry
Send your postcode and a few details.
Measured survey
Walls, damp, eaves, cills and services recorded.
Written price
A fixed price with the specification attached.
Work and handover
Installed, inspected and documents handed over.
Wood fibre EWI in Yeovil: 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.
Does wood fibre need a lime render?
It needs the render specified by the system manufacturer, which is usually lime or mineral based.
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 Yeovil?
Yes — we survey and quote wood fibre external wall insulation in Yeovil (BA20) and nearby Bridport, Dorchester and Bridgwater, with a fixed written price before any work starts.