Wood fibre EWI · Hertfordshire
Wood fibre insulation for older homes in Stevenage
Wood fibre insulation for older homes in Stevenage: free survey, written specification and a fixed price, with the details that keep walls dry planned from the start. For older stone and early brick properties in Stevenage, we look at a wood fibre and lime build-up first.
- Free survey in SG1 and nearby
- Guide price from £150 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Stevenage
Postcode, service and a phone number is all we need.
What's included
- Thicker than foam for the same U-value
- Compatible with lime renders used on traditional buildings
- Often the most suitable EWI where planning allows on older properties
- Vapour-open and hygroscopic — buffers moisture rather than trapping it
Stevenage: walls, weather and approvals
We cover Stevenage and nearby Hitchin, Letchworth Garden City and Welwyn Garden City. Stevenage is about 19 miles from Watford. The East of England has a mix of post-war estates, inter-war semis and older solid brick and flint cottages, with some system-built council homes on post-war estates.
Much of Hertfordshire 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.
For period homes in Stevenage, the survey looks closely at existing lime mortars and any cement patching that may trap moisture.
- Postcode district
- SG1
- County or area
- Hertfordshire
- Nation
- England
- Nearby
- Hitchin, Letchworth Garden City, Welwyn Garden City, Harpenden
Permissions in England
For a house in Stevenage, 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.
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 Stevenage
| 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
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 Stevenage: 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 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.
Does wood fibre need a lime render?
It needs the render specified by the system manufacturer, which is usually lime or mineral based.
Do you cover Stevenage?
Yes — we survey and quote wood fibre external wall insulation in Stevenage (SG1) and nearby Hitchin, Letchworth Garden City and Welwyn Garden City, with a fixed written price before any work starts.