Mineral wool EWI · Hampshire
Mineral wool external wall insulation in Basingstoke
From Basingstoke to Fleet, we price mineral wool external wall insulation after a measured survey — no guesswork, and no work starts until the price is agreed in writing. On blocks and taller buildings in Basingstoke, mineral wool is the default because of the fire guidance for external walls.
- Free survey in RG21 and nearby
- Guide price from £125 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Basingstoke
Postcode, service and a phone number is all we need.
What you get
- Heavier than EPS, so more fixings and careful handling
- Finished in mineral or silicone render, or brick slip
- Better sound reduction than foam boards
- Vapour-open, so moisture in solid walls can dry outwards
Before we quote in Basingstoke
We cover Basingstoke and nearby Fleet, Thatcham and Yateley. Basingstoke is about 28 miles from Southampton. Homes across the South East range from inter-war semis and post-war estates, which are mostly cavity-walled, to older solid-walled cottages and Victorian town terraces.
Exposure to wind-driven rain varies across Hampshire: 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.
For homes in Basingstoke near busy roads, mineral wool's sound reduction can be a reason to choose it.
- Postcode district
- RG21
- County or area
- Hampshire
- Nation
- England
- Nearby
- Fleet, Thatcham, Yateley, Farnham
Approvals in England
For a house in Basingstoke, external insulation or render is often permitted development if it looks similar to the existing walls; conservation areas, flats, commercial buildings and listed buildings need permission or consent, so we check your address first.
Insulating or re-rendering more than half of a wall's area brings in Part L of the Building Regulations, so building control is notified and the wall is upgraded to about 0.30 W/m²K where practical.
On residential buildings with a storey 11 metres or more above ground, guidance points to non-combustible external wall materials, and combustible materials are banned in relevant buildings 18 metres and over, so we specify mineral wool systems there.
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 Basingstoke
| 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
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.
Mineral wool EWI in Basingstoke: 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 Basingstoke?
Yes — we survey and quote mineral wool external wall insulation in Basingstoke (RG21) and nearby Fleet, Thatcham and Yateley, with a fixed written price before any work starts.