Internal wall insulation · County Londonderry
Internal wall insulation in Magherafelt
We quote internal wall insulation for homes in Magherafelt (BT45) and nearby Cookstown and Ballymena, with guide prices online and a free survey to fix the price. We plan internal insulation in Magherafelt homes room by room so you keep the rest of the house usable.
- Free survey in BT45 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Magherafelt
Postcode, service and a phone number is all we need.
What's included
- Needs careful detailing at floor joists, reveals and corners
- Sockets, radiators, skirting and coving are moved and refitted
- Loses roughly 50–100mm per insulated wall
- Keeps the outside of the house exactly as it is
Homes and walls in Magherafelt
We also cover Cookstown and Ballymena, close to Magherafelt. Magherafelt sits around 33 miles from Derry~Londonderry. Northern Ireland has many rendered and pebble-dashed homes, older solid-walled rural houses, and estates built by the Housing Executive.
Parts of County Londonderry 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 terraced homes in Magherafelt with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- BT45
- County or area
- County Londonderry
- Nation
- Northern Ireland
- Nearby
- Cookstown, Ballymena, Antrim, Dungannon
Northern Ireland: planning and regulations
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 Magherafelt
| 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.
From enquiry to finished wall
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.
Internal wall insulation in Magherafelt: questions
Can I stay in the house?
Yes, but each room is out of use while it's worked on, typically 3–5 days.
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.
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
Do you cover Magherafelt?
Yes — we survey and quote internal wall insulation in Magherafelt (BT45) and nearby Cookstown, Ballymena and Antrim, with a fixed written price before any work starts.