Internal wall insulation · County Antrim
Internal wall insulation in Carrickfergus
From Carrickfergus to Holywood, we price internal wall insulation after a measured survey — no guesswork, and no work starts until the price is agreed in writing. For terraced homes in Carrickfergus with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Free survey in BT38 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Carrickfergus
Postcode, service and a phone number is all we need.
Part of every quote
- Can be done one room at a time during a renovation
- Keeps the outside of the house exactly as it is
- Loses roughly 50–100mm per insulated wall
- Insulated plasterboard, stud wall or breathable systems
What we look for in Carrickfergus
We also cover Holywood and Newtownabbey, close to Carrickfergus. It's roughly 10 miles from Carrickfergus 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.
We plan internal insulation in Carrickfergus homes room by room so you keep the rest of the house usable.
- Postcode district
- BT38
- County or area
- County Antrim
- Nation
- Northern Ireland
- Nearby
- Holywood, Newtownabbey, Bangor (County Down), Belfast
Permissions in Northern Ireland
Internal insulation rarely needs planning permission; listed buildings need consent for internal changes.
Building control applies to insulation and major re-rendering in Northern Ireland, and the work is signed off by the council.
What are the options for internal insulation?
- Insulated plasterboard — PIR or phenolic foam bonded to plasterboard, fixed to the wall and skimmed. Thinnest option.
- Insulated stud wall — a timber or metal frame filled with insulation, with a vapour control layer and plasterboard. Takes more space but runs services easily.
- Wood fibre and lime — breathable boards finished in lime plaster, for older walls that need to manage moisture.
Internal wall insulation prices in Carrickfergus
| 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 Carrickfergus: 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.
Is internal insulation cheaper than external?
Per m² usually yes, but the cost of moving fittings and redecorating narrows the gap on whole-house jobs.
Do you cover Carrickfergus?
Yes — we survey and quote internal wall insulation in Carrickfergus (BT38) and nearby Holywood, Newtownabbey and Bangor (County Down), with a fixed written price before any work starts.