Solid wall insulation · County Antrim
Solid wall insulation in Antrim
We quote solid wall insulation for homes in Antrim (BT41) and nearby Ballymena and Newtownabbey, with guide prices online and a free survey to fix the price. For Antrim homeowners weighing external against internal insulation, the survey sets out both with prices.
- Free survey in BT41 and nearby
- Guide price from £75 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Antrim
Postcode, service and a phone number is all we need.
Part of every quote
- Breathable options for stone and lime-mortared walls
- Solid walls can lose heat roughly twice as fast as an insulated cavity wall
- Internal insulation suits single rooms or where the outside can't change
- External insulation keeps room sizes and treats cold bridges well
Antrim: walls, weather and approvals
We also cover Ballymena and Newtownabbey, close to Antrim. Antrim sits around 14 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 Antrim, we check wall thickness and age first to confirm there's no cavity to fill.
- Postcode district
- BT41
- County or area
- County Antrim
- Nation
- Northern Ireland
- Nearby
- Ballymena, Newtownabbey, Belfast, Lisburn
Approvals in Northern Ireland
In Northern Ireland, permitted development is set by the 2015 Order; in Antrim, changing a house's external appearance, and any work on flats or listed buildings, may need permission, so we check with the council.
Council building control in Northern Ireland checks insulation work of this kind; the quote says how the application is handled.
External or internal — which is better?
External insulation keeps the wall warm, reduces cold bridging at floors and party walls, renews the outside, and doesn't shrink rooms — but it changes the look and needs scaffolding. Internal insulation keeps the façade unchanged and can be done room by room, but loses 50–100mm of floor space per wall and needs careful detailing to avoid condensation at joists and corners.
Solid wall insulation prices in Antrim
| 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.
What happens next
Enquiry
Send your postcode and a few details.
Measured survey
Walls, damp, eaves, cills and services recorded.
Written price
A fixed price with the specification attached.
Work and handover
Installed, inspected and documents handed over.
Solid wall insulation in Antrim: questions
Can I do one wall at a time?
Yes. Many owners start with the coldest or most exposed elevation, often a gable end.
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.
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.
Do you cover Antrim?
Yes — we survey and quote solid wall insulation in Antrim (BT41) and nearby Ballymena, Newtownabbey and Belfast, with a fixed written price before any work starts.