County Londonderry · Northern Ireland
Render and insulation in Derry~Londonderry
External wall insulation, render and repairs in Derry~Londonderry, with a free survey and a fixed written price before any work starts.
- Free survey in BT48 and nearby
- Fixed written price before work starts
- Guide prices online
Free survey in Derry~Londonderry
Tell us about the property. We reply on working days.
Services
Services in Derry~Londonderry
External wall insulation
- External wall insulation in Derry~Londonderry
- EPS insulation in Derry~Londonderry
- Mineral wool EWI in Derry~Londonderry
- Wood fibre EWI in Derry~Londonderry
- Non-traditional houses in Derry~Londonderry
- Park home insulation in Derry~Londonderry
- Flats and blocks in Derry~Londonderry
- Commercial EWI in Derry~Londonderry
Solid and internal wall insulation
- Solid wall insulation in Derry~Londonderry
- Internal wall insulation in Derry~Londonderry
- Survey and quote in Derry~Londonderry
Render finishes
- Insulated render in Derry~Londonderry
- Silicone render in Derry~Londonderry
- Monocouche render in Derry~Londonderry
- Lime render in Derry~Londonderry
- Brick slip EWI in Derry~Londonderry
- Acrylic render in Derry~Londonderry
Re-rendering, repairs and upkeep
Homes and walls in Derry~Londonderry
We also cover Strabane and Limavady, close to Derry~Londonderry.
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.
- Postcode district
- BT48
- County or area
- County Londonderry
- Nation
- Northern Ireland
Approvals in Northern Ireland
For Derry~Londonderry homes, the council's planning office has the final say on external changes; conservation areas, flats and listed buildings need an application or consent.
External wall insulation is building work under the Building Regulations (Northern Ireland) 2012, so council building control is involved, with Technical Booklet F1 covering dwellings.
Typical jobs and guide prices
| Item | Guide price | Notes |
|---|---|---|
| Park home insulation | From £7,9950% VAT | Single-unit park home |
| Mineral wool external wall insulation | From £125 per m² + scaffold0% VAT | Mineral wool + mineral or silicone render |
| Brick slip finish over insulation | From £185 per m² + scaffold0% VAT | Brick slip EWI |
| Re-rendering | From £90 per m² + scaffoldinc VAT | Strip and re-render (silicone system) |
Insulation prices for homes are totals (0% VAT until 31 March 2027); render and repair prices include VAT at 20%. Confirmed in writing after a free survey. Full price guide
Nearby towns
Derry~Londonderry: questions
Do you cover Derry~Londonderry?
Yes — we survey and quote in Derry~Londonderry (BT48) and nearby Strabane, Limavady and Coleraine.
How much does external wall insulation cost in Derry~Londonderry?
Our guide is £105–£170 per m² depending on the system, plus scaffolding — roughly £10,200–£17,700 for a typical three-bed semi with EPS and silicone render. Installing insulation in a home is zero-rated for VAT until 31 March 2027, so that's the total. A free survey fixes the price.
Do I need planning permission in Derry~Londonderry?
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.
Is VAT charged on wall insulation?
Installing wall insulation in homes is zero-rated until 31 March 2027, then 5%, so our insulation prices are totals. Render-only work and repairs carry VAT at 20%, and our prices for them include it.