Wood fibre EWI · County Londonderry
Wood fibre insulation for older homes in Derry~Londonderry
Homeowners and landlords in Derry~Londonderry can get a free survey and a fixed written quote for wood fibre external wall insulation, covering BT48 and the surrounding area. For period homes in Derry~Londonderry, the survey looks closely at existing lime mortars and any cement patching that may trap moisture.
- Free survey in BT48 and nearby
- Guide price from £150 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Derry~Londonderry
Postcode, service and a phone number is all we need.
What's included
- Compatible with lime renders used on traditional buildings
- 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
What we look for in Derry~Londonderry
Surveys in Derry~Londonderry also cover the surrounding BT48 district and towns such as Strabane and Limavady. Northern Ireland has many rendered and pebble-dashed homes, older solid-walled rural houses, and estates built by the Housing Executive.
Parts of County Londonderry 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 older stone and early brick properties in Derry~Londonderry, we look at a wood fibre and lime build-up first.
- Postcode district
- BT48
- County or area
- County Londonderry
- Nation
- Northern Ireland
- Nearby
- Strabane, Limavady, Coleraine, Omagh
Planning and building control in Northern Ireland
In Northern Ireland, permitted development is set by the 2015 Order; in Derry~Londonderry, changing a house's external appearance, and any work on flats or listed buildings, may need permission, so we check with the council.
Council building control in Northern Ireland checks insulation work of this kind; the quote says how the application is 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 Derry~Londonderry
| 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 Derry~Londonderry: 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.
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.
Do you cover Derry~Londonderry?
Yes — we survey and quote wood fibre external wall insulation in Derry~Londonderry (BT48) and nearby Strabane, Limavady and Coleraine, with a fixed written price before any work starts.