Mineral wool EWI · County Down
Mineral wool external wall insulation in Newtownards
Quotes for mineral wool external wall insulation in Newtownards list the system, the detailing and the VAT position in writing, so you know exactly what's included. Older solid-walled homes in Newtownards can suit a vapour-open mineral wool build-up better than foam; the survey checks the wall first.
- Free survey in BT23 and nearby
- Guide price from £125 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Newtownards
Postcode, service and a phone number is all we need.
Part of every quote
- Finished in mineral or silicone render, or brick slip
- Vapour-open, so moisture in solid walls can dry outwards
- Better sound reduction than foam boards
- Heavier than EPS, so more fixings and careful handling
Newtownards: walls, weather and approvals
We cover Newtownards and nearby Bangor (County Down), Holywood and Castlereagh. Newtownards sits around 5 miles from Bangor (County Down). Northern Ireland has many rendered and pebble-dashed homes, older solid-walled rural houses, and estates built by the Housing Executive.
Exposure to wind-driven rain varies across County Down: sheltered town streets fare better than walls on high ground or facing the prevailing weather, and the render, beads and cill details are chosen with that in mind.
On blocks and taller buildings in Newtownards, mineral wool is the default because of the fire guidance for external walls.
- Postcode district
- BT23
- County or area
- County Down
- Nation
- Northern Ireland
- Nearby
- Bangor (County Down), Holywood, Castlereagh, Belfast
Planning and building control in Northern Ireland
In Northern Ireland, permitted development is set by the 2015 Order; in Newtownards, 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.
On taller buildings in Northern Ireland we specify non-combustible mineral wool systems and confirm the classification with building control, in line with Technical Booklet E.
What about noise?
Dense mineral wool adds mass and absorbs sound, so homes beside main roads or railways often notice a quieter interior, particularly where windows are also upgraded. The improvement depends on the whole wall and windows, so we don't quote decibel figures without testing.
Mineral wool external wall insulation prices in Newtownards
| Item | Guide price | Notes |
|---|---|---|
| Mineral wool + mineral or silicone render | £125–£170 per m²0% VAT | Excluding scaffold |
| Mineral wool + brick slip | £195–£260 per m²0% VAT | Heavier slip systems need extra fixings |
| Three-bed semi, full house | £11,800–£20,2000% VAT | 80–100 m² of wall, including scaffold |
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.
Mineral wool EWI in Newtownards: questions
Is mineral wool needed for a bungalow?
Rarely for fire reasons. It may still be chosen on a damp-prone solid wall where a vapour-open build-up is wanted.
Is mineral wool better than EPS?
Not always better — different. Mineral wool wins on fire performance, breathability and acoustics; EPS wins on cost, weight and thinner boards for the same U-value. The wall, the building height and your priorities decide it.
Does mineral wool get wet?
It is water-repellent and protected by the render system. Like any insulation it must not be left exposed to rain during installation, so boards are covered and work stops in wet weather.
Do you cover Newtownards?
Yes — we survey and quote mineral wool external wall insulation in Newtownards (BT23) and nearby Bangor (County Down), Holywood and Castlereagh, with a fixed written price before any work starts.