Wood fibre EWI · Gwent
Wood fibre insulation for older homes in Cwmbran
Homeowners and landlords in Cwmbran can get a free survey and a fixed written quote for wood fibre external wall insulation, covering NP44 and the surrounding area. For older stone and early brick properties in Cwmbran, we look at a wood fibre and lime build-up first.
- Free survey in NP44 and nearby
- Guide price from £150 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Cwmbran
Postcode, service and a phone number is all we need.
What's included
- 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
- Compatible with lime renders used on traditional buildings
Local considerations in Cwmbran
As well as Cwmbran itself, we quote in Pontypool, Risca and Newport (Gwent). It's roughly 5 miles from Cwmbran to Newport (Gwent), the largest town in Gwent. South Wales has long runs of solid-wall valley terraces, Victorian and Edwardian town housing and post-war council estates.
Exposure to wind-driven rain varies across Gwent: 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.
If your home in Cwmbran is in a conservation area, we check the council's position on render before suggesting wood fibre EWI.
- Postcode district
- NP44
- County or area
- Gwent
- Nation
- Wales
- Nearby
- Pontypool, Risca, Newport (Gwent), Caerphilly
Planning and building control in Wales
Householder rules in Wales are similar to England's: in Cwmbran, a similar-looking finish on a house is often permitted, but conservation areas, flats and listed buildings need permission or consent.
In Wales, insulating or re-rendering more than half of a wall's area is treated as renovating a thermal element under Approved Document L (Wales), so building control is involved before work starts.
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 Cwmbran
| 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
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 Cwmbran: 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 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.
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 Cwmbran?
Yes — we survey and quote wood fibre external wall insulation in Cwmbran (NP44) and nearby Pontypool, Risca and Newport (Gwent), with a fixed written price before any work starts.