Flats and blocks · County Antrim
EWI for flats and blocks in Larne
If you're planning EWI for flats and blocks in Larne, start with a free survey: we measure, check the walls and confirm planning and building control for your address. On mixed-tenure blocks in Larne, we agree access and resident notices with the managing agent before scaffold goes up.
- Free survey in BT40 and nearby
- Guide price from £110 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Larne
Postcode, service and a phone number is all we need.
What you get
- We work with managing agents on resident communication
- Cavity barriers and fire-stopping detailed at compartment floors
- Planning permission is needed for flats and maisonettes
- Mineral wool systems where building height or guidance requires them

Larne: walls, weather and approvals
We cover Larne and nearby Carrickfergus, Newtownabbey and Bangor (County Down). It's roughly 19 miles from Larne to Belfast, the largest town in County Antrim. Northern Ireland has many rendered and pebble-dashed homes, older solid-walled rural houses, and estates built by the Housing Executive.
Parts of County Antrim 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 blocks in Larne, we start with height, storeys and the planning position, because those decide the system.
- Postcode district
- BT40
- County or area
- County Antrim
- Nation
- Northern Ireland
- Nearby
- Carrickfergus, Newtownabbey, Bangor (County Down), Holywood
Approvals in Northern Ireland
Before quoting in Larne, we check whether the property is listed or in a conservation area, which changes what needs planning permission in Northern Ireland.
Building control applies to insulation and major re-rendering in Northern Ireland, and the work is signed off by the council.
On taller buildings in Northern Ireland we specify non-combustible mineral wool systems and confirm the classification with building control, in line with Technical Booklet E.
For flats, the lease or management agreement sets how owners agree to the work and share its cost.
How disruptive is it for residents?
Most work happens from scaffolding outside. Residents may need to allow brief access to extend window cills, vents or flues from the inside. We provide a notice for residents covering dates, scaffold, and how to raise concerns.
EWI for flats and blocks prices in Larne
| Item | Guide price | Notes |
|---|---|---|
| Mineral wool system on a low-rise block | £110–£190 per m²0% VAT | Priced on survey |
| Scaffold and access | Priced per building | Includes licences where needed |
| Specification and pricing pack for consultation | Included with quote |
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.
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.
Flats and blocks in Larne: questions
Do flats need planning permission for EWI?
Yes. Permitted development rights for external alterations apply to houses, not flats or maisonettes, so an application is needed.
Can one flat have external wall insulation on its own?
Rarely. The outside walls are usually owned by the freeholder, the result would look patchy, and planning is unlikely. Whole-building schemes are the norm.
Do you cover Larne?
Yes — we survey and quote EWI for flats and blocks in Larne (BT40) and nearby Carrickfergus, Newtownabbey and Bangor (County Down), with a fixed written price before any work starts.