Solid wall insulation · County Antrim
Solid wall insulation in Larne
Quotes for solid wall insulation in Larne list the system, the detailing and the VAT position in writing, so you know exactly what's included. For Larne homeowners weighing external against internal insulation, the survey sets out both with prices.
- Free survey in BT40 and nearby
- Guide price from £75 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's included
- External insulation keeps room sizes and treats cold bridges well
- Solid walls can lose heat roughly twice as fast as an insulated cavity wall
- Both can be done in stages, elevation by elevation or room by room
- Breathable options for stone and lime-mortared walls
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.
For solid-walled homes in Larne, we check wall thickness and age first to confirm there's no cavity to fill.
- Postcode district
- BT40
- County or area
- County Antrim
- Nation
- Northern Ireland
- Nearby
- Carrickfergus, Newtownabbey, Bangor (County Down), Holywood
Northern Ireland: planning and regulations
In Northern Ireland, permitted development is set by the 2015 Order; in Larne, changing a house's external appearance, and any work on flats or listed buildings, may need permission, so we check with the council.
Building control applies to insulation and major re-rendering in Northern Ireland, and the work is signed off by the council.
How can I tell if my walls are solid?
Measure the wall thickness at a window or door: about 225mm (9 inches) of brick usually means solid, while 260mm or more often means a cavity. On exposed brick, a pattern with bricks laid end-on (headers) every few courses points to solid construction. Stone walls are usually solid regardless of thickness. Age is a strong clue too — most homes built before the 1920s are solid-walled.
Solid wall insulation prices in Larne
| Item | Guide price | Notes |
|---|---|---|
| External (EWI) | £105–£210 per m²0% VAT | By board and finish |
| Internal (IWI) | £75–£130 per m²0% VAT | Plus making good |
| Survey and written recommendation | Free with a 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.
From enquiry to finished wall
Get a guide price
Try the online quote tool for a ballpark figure.
Book the survey
A visit at a time that suits you.
Agree the quote
Nothing starts until you've signed the written price.
We do the work
Planned around weather, with you kept informed.
Solid wall insulation in Larne: questions
Can I do one wall at a time?
Yes. Many owners start with the coldest or most exposed elevation, often a gable end.
Does solid wall insulation cause condensation?
It can if detailed poorly, particularly internally. A condensation risk check for the proposed build-up and careful detailing at joists, reveals and corners avoid it.
Is solid wall insulation worth it?
For many solid-walled homes it's one of the biggest single improvements to comfort, because the walls are often the largest heat-loss area. Savings depend on the home and heating, so we don't promise a figure.
Do you cover Larne?
Yes — we survey and quote solid wall insulation in Larne (BT40) and nearby Carrickfergus, Newtownabbey and Bangor (County Down), with a fixed written price before any work starts.