Mineral wool EWI · County Down
Mineral wool external wall insulation in Bangor (County Down)
We quote mineral wool external wall insulation for homes in Bangor (County Down, BT19) and nearby Newtownards and Holywood, with guide prices online and a free survey to fix the price. On blocks and taller buildings in Bangor (County Down), mineral wool is the default because of the fire guidance for external walls.
- Free survey in BT19 and nearby
- Guide price from £125 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Bangor (County Down)
Postcode, service and a phone number is all we need.
What you get
- Finished in mineral or silicone render, or brick slip
- Vapour-open, so moisture in solid walls can dry outwards
- Used on blocks of flats and buildings with storeys above 11m
- Heavier than EPS, so more fixings and careful handling
Homes and walls in Bangor (County Down)
We cover Bangor (County Down) and nearby Newtownards, Holywood and Carrickfergus. 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.
Older solid-walled homes in Bangor (County Down) can suit a vapour-open mineral wool build-up better than foam; the survey checks the wall first.
- Postcode district
- BT19
- County or area
- County Down
- Nation
- Northern Ireland
- Nearby
- Newtownards, Holywood, Carrickfergus, Newtownabbey
Planning and building control in Northern Ireland
In Northern Ireland, permitted development is set by the 2015 Order; in Bangor (County Down), changing a house's external appearance, and any work on flats or listed buildings, may need permission, so we check with the council.
External wall insulation is building work under the Building Regulations (Northern Ireland) 2012, so council building control is involved, with Technical Booklet F1 covering dwellings.
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.
Why choose mineral wool over EPS?
Two reasons come up most: fire and moisture. Mineral wool doesn't burn, which is why guidance for taller residential buildings points to non-combustible external wall materials. It is also vapour-open, so a solid wall that holds some moisture can keep drying outwards through the insulation and render.
The trade-offs are weight and cost. Slabs are denser, need more fixings and take longer to install, so the price per m² is higher than EPS.
Mineral wool external wall insulation prices in Bangor (County Down)
| 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.
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.
Mineral wool EWI in Bangor (County Down): questions
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.
Can mineral wool EWI have a brick finish?
Yes. Brick slips can be bonded over mineral wool systems designed for them, with additional fixings for the extra weight.
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 Bangor (County Down)?
Yes — we survey and quote mineral wool external wall insulation in Bangor (County Down, BT19) and nearby Newtownards, Holywood and Carrickfergus, with a fixed written price before any work starts.