Wood fibre EWI · Northamptonshire
Wood fibre insulation for older homes in Northampton
From Northampton to Wellingborough, we price wood fibre external wall insulation after a measured survey — no guesswork, and no work starts until the price is agreed in writing. If your home in Northampton is in a conservation area, we check the council's position on render before suggesting wood fibre EWI.
- Free survey in NN1 and nearby
- Guide price from £150 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Northampton
Postcode, service and a phone number is all we need.
What the job covers
- High density gives good protection from summer heat
- Thicker than foam for the same U-value
- Made from a renewable material with low embodied carbon
- Vapour-open and hygroscopic — buffers moisture rather than trapping it
Northampton: walls, weather and approvals
We also cover Wellingborough and Daventry, close to Northampton. Housing in the East Midlands includes Victorian terraces in the towns and cities, plenty of inter-war semis and post-war council estates, some of them system-built.
Much of Northamptonshire 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 Northampton, the survey looks closely at existing lime mortars and any cement patching that may trap moisture.
- Postcode district
- NN1
- County or area
- Northamptonshire
- Nation
- England
- Nearby
- Wellingborough, Daventry, Rushden, Kettering
Permissions in England
For a house in Northampton, 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.
If the work covers more than half of a wall, or a quarter of the building's whole envelope, it counts as renovating a thermal element, with a target of about 0.30 W/m²K where feasible.
What finish goes over wood fibre?
A lime-based or mineral render designed for the system, applied over a reinforcing base coat. Lime finishes give the softer, slightly irregular texture that suits cottages and older terraces.
Wood fibre insulation for older homes prices in Northampton
| 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 Northampton: 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 Northampton?
Yes — we survey and quote wood fibre external wall insulation in Northampton (NN1) and nearby Wellingborough, Daventry and Rushden, with a fixed written price before any work starts.