Wood fibre EWI · Somerset
Wood fibre insulation for older homes in Bath
Quotes for wood fibre external wall insulation in Bath list the system, the detailing and the VAT position in writing, so you know exactly what's included. For older stone and early brick properties in Bath, we look at a wood fibre and lime build-up first.
- Free survey in BA1 and nearby
- Guide price from £150 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Bath
Postcode, service and a phone number is all we need.
What the job covers
- Thicker than foam for the same U-value
- Often the most suitable EWI where planning allows on older properties
- Made from a renewable material with low embodied carbon
- High density gives good protection from summer heat
Before we quote in Bath
We also cover Trowbridge and Kingswood, close to 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 period homes in Bath, the survey looks closely at existing lime mortars and any cement patching that may trap moisture.
- Postcode district
- BA1
- County or area
- Somerset
- Nation
- England
- Nearby
- Trowbridge, Kingswood, Mangotsfield, Frome
England: planning and regulations
For a house in Bath, 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 Bath
| 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%.
What happens next
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.
Wood fibre EWI in Bath: questions
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 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.
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.
Do you cover Bath?
Yes — we survey and quote wood fibre external wall insulation in Bath (BA1) and nearby Trowbridge, Kingswood and Mangotsfield, with a fixed written price before any work starts.