Wood fibre EWI · Mid Glamorgan
Wood fibre insulation for older homes in Merthyr Tydfil
We quote wood fibre external wall insulation for homes in Merthyr Tydfil (CF47) and nearby Aberdare and Rhondda, with guide prices online and a free survey to fix the price. If your home in Merthyr Tydfil is in a conservation area, we check the council's position on render before suggesting wood fibre EWI.
- Free survey in CF47 and nearby
- Guide price from £150 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Merthyr Tydfil
Postcode, service and a phone number is all we need.
Included as standard
- Made from a renewable material with low embodied carbon
- High density gives good protection from summer heat
- Compatible with lime renders used on traditional buildings
- Thicker than foam for the same U-value
What we look for in Merthyr Tydfil
As well as Merthyr Tydfil itself, we quote in Aberdare, Rhondda and Ebbw Vale. Merthyr Tydfil sits around 7 miles from Rhondda. South Wales has long runs of solid-wall valley terraces, Victorian and Edwardian town housing and post-war council estates.
Parts of Mid Glamorgan fall in the higher wind-driven rain exposure bands, especially coastal and upland sites, so render specification, movement joints and detailing at cills, verges and the base of the wall matter more than usual.
For period homes in Merthyr Tydfil, the survey looks closely at existing lime mortars and any cement patching that may trap moisture.
- Postcode district
- CF47
- County or area
- Mid Glamorgan
- Nation
- Wales
- Nearby
- Aberdare, Rhondda, Ebbw Vale, Pontypridd
Approvals in Wales
Householder rules in Wales are similar to England's: in Merthyr Tydfil, a similar-looking finish on a house is often permitted, but conservation areas, flats and listed buildings need permission or consent.
Welsh Building Regulations expect walls to be upgraded when a substantial area is renewed, and building control signs the work off.
What about listed buildings and conservation areas?
EWI on a listed building needs listed building consent and is often refused where the outside appearance matters. In conservation areas, rendering or cladding a house normally needs planning permission. Wood fibre and lime are more likely to be acceptable than foam and acrylic, but the council decides. We check before quoting.
Wood fibre insulation for older homes prices in Merthyr Tydfil
| 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%.
From enquiry to finished wall
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 Merthyr Tydfil: questions
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.
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 Merthyr Tydfil?
Yes — we survey and quote wood fibre external wall insulation in Merthyr Tydfil (CF47) and nearby Aberdare, Rhondda and Ebbw Vale, with a fixed written price before any work starts.