Commercial EWI · Northern Ireland
Commercial and public building EWI in County Londonderry
We provide commercial external wall insulation across County Londonderry, including Derry~Londonderry, Coleraine and Limavady, with a free survey and fixed written price. Schools and community buildings around County Londonderry are usually phased by elevation, with noisy stages in holidays where possible.
- Free survey and fixed written price
- Guide price from £110 per m² + scaffold, + VAT
- Planning and building control checked for Northern Ireland
Free survey in County Londonderry
Tell us the postcode and what you need.
Part of every quote
- Programmes phased around opening hours and term dates
- Non-combustible systems where use or height requires them
- Planning applications supported with drawings and finish samples
- Clear handover file with system documentation
- Colour and texture options to suit brand or setting
Before we quote in County 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.
For commercial premises in County Londonderry, we programme the work around opening hours so the building can keep trading.
- Nation
- Northern Ireland
- Region
- Northern Ireland
- Towns covered
- Derry~Londonderry, Coleraine, Limavady, Magherafelt
- Guide price
- From £110 per m² + scaffold · + VAT
Planning and building control in Northern Ireland
In Northern Ireland, permitted development is set by the Planning (General Permitted Development) Order (NI) 2015. Changing the external appearance of a house may need permission, and conservation areas, flats, commercial buildings and listed buildings need planning permission or listed building consent. Check with your council's planning office.
Insulating external walls is building work under the Building Regulations (Northern Ireland) 2012, handled by council building control, with Technical Booklet F1 covering conservation of fuel and power in dwellings.
Technical Booklet E sets the fire-safety guidance for external walls. On taller buildings we use non-combustible mineral wool systems and confirm the classification with building control.
How is the work programmed?
Work is split by elevation so entrances and fire exits stay usable. For schools, noisy and access-heavy stages are planned around holidays where possible. Health and safety duties under CDM 2015 are agreed at the start, including who acts as principal contractor.
Commercial and public building EWI prices in County Londonderry
| Item | Guide price | Notes |
|---|---|---|
| Insulated render system | £110–£200 per m²+ VAT | Priced on survey |
| Render refurbishment without insulation | £55–£95 per m²+ VAT | Silicone or mineral |
| Access and scaffold | Per building | Includes edge protection |
Confirmed by a fixed written quote after survey. Business prices shown before VAT, which is added at 20%. Buildings used solely for a relevant charitable purpose can qualify for 0% on insulation.
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.
Commercial EWI in County Londonderry: questions
Is VAT 0% on commercial insulation?
Usually not. The zero rate covers insulation installed in residential accommodation and, since 1 February 2024, buildings used solely for a relevant charitable purpose, such as many charity-run village halls. Other commercial work is standard-rated.
Can the building stay open during the works?
Usually, yes. The work is phased and the scaffold layout keeps entrances and escape routes clear.
Do you provide a maintenance plan?
Yes — the handover includes the system documents and recommended inspection and cleaning intervals.
Do you cover all of County Londonderry?
Yes. We survey and quote commercial external wall insulation across County Londonderry, including Derry~Londonderry, Coleraine, Limavady, Magherafelt.
Do I need planning permission in Northern Ireland?
In Northern Ireland, permitted development is set by the Planning (General Permitted Development) Order (NI) 2015. We check your address before quoting.