Wood fibre EWI · Greater London
Wood fibre insulation for older homes in Chislehurst
From Chislehurst to Eltham, we price wood fibre external wall insulation after a measured survey — no guesswork, and no work starts until the price is agreed in writing. For period homes in Chislehurst, the survey looks closely at existing lime mortars and any cement patching that may trap moisture.
- Free survey in BR7 and nearby
- Guide price from £150 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Chislehurst
Postcode, service and a phone number is all we need.
Included as standard
- Vapour-open and hygroscopic — buffers moisture rather than trapping it
- High density gives good protection from summer heat
- Often the most suitable EWI where planning allows on older properties
- Compatible with lime renders used on traditional buildings
Chislehurst: walls, weather and approvals
Surveys in Chislehurst also cover the surrounding BR7 district and towns such as Eltham and Welling. London's housing includes a large stock of Victorian and Edwardian solid-wall terraces, inter-war semis and post-war blocks, and conservation areas cover many streets — so planning is often the first question for external work.
Much of Greater London 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 older stone and early brick properties in Chislehurst, we look at a wood fibre and lime build-up first.
- Postcode district
- BR7
- County or area
- Greater London
- Nation
- England
- Nearby
- Eltham, Welling, Bexley, Beckenham
Planning and building control in England
Planning in Chislehurst follows England's national rules: similar-looking finishes on houses are usually permitted, while flats, commercial premises, conservation areas and streets under an Article 4 direction need an application.
Building control applies once more than half of a wall is insulated or re-rendered, or more than a quarter of the whole building envelope, and your written quote says how that's handled.
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 Chislehurst
| 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
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 Chislehurst: 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 Chislehurst?
Yes — we survey and quote wood fibre external wall insulation in Chislehurst (BR7) and nearby Eltham, Welling and Bexley, with a fixed written price before any work starts.