Internal wall insulation · County Antrim
Internal wall insulation in Larne
Looking for internal wall insulation in Larne? We survey homes across Larne and the BT40 area, then give you a fixed written price before any work starts. We plan internal insulation in Larne homes room by room so you keep the rest of the house usable.
- Free survey in BT40 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Larne
Postcode, service and a phone number is all we need.
Part of every quote
- Insulated plasterboard, stud wall or breathable systems
- Can be done one room at a time during a renovation
- Keeps the outside of the house exactly as it is
- Sockets, radiators, skirting and coving are moved and refitted
Local considerations in Larne
We cover Larne and nearby Carrickfergus, Newtownabbey and Bangor (County Down). Larne sits around 19 miles from Belfast. 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.
Where a property in Larne is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Postcode district
- BT40
- County or area
- County Antrim
- Nation
- Northern Ireland
- Nearby
- Carrickfergus, Newtownabbey, Bangor (County Down), Holywood
Approvals in Northern Ireland
Internal insulation rarely needs planning permission; listed buildings need consent for internal changes.
Council building control in Northern Ireland checks insulation work of this kind; the quote says how the application is handled.
What are the risks with internal insulation?
Insulating inside makes the masonry colder, so moisture risk rises. Weak points are where floor joists bear into the wall, window reveals and corners. A condensation risk check for the build-up, a continuous vapour control layer where specified, and returning insulation into reveals deal with most of it.
Internal wall insulation prices in Larne
| Item | Guide price | Notes |
|---|---|---|
| Insulated plasterboard, supplied and skimmed | £75–£110 per m²0% VAT | |
| Insulated stud wall | £90–£130 per m²0% VAT | |
| Typical bedroom, one external wall | £1,795–£2,9950% VAT | Including making good |
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.
Internal wall insulation in Larne: questions
Can I stay in the house?
Yes, but each room is out of use while it's worked on, typically 3–5 days.
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
What happens to my radiators and sockets?
They're taken off and refitted on the new wall face. Electrical work is done by a qualified electrician.
Do you cover Larne?
Yes — we survey and quote internal wall insulation in Larne (BT40) and nearby Carrickfergus, Newtownabbey and Bangor (County Down), with a fixed written price before any work starts.