Mineral wool EWI · Oxfordshire
Mineral wool external wall insulation in Witney
Mineral wool external wall insulation in Witney: free survey, written specification and a fixed price, with the details that keep walls dry planned from the start. Older solid-walled homes in Witney can suit a vapour-open mineral wool build-up better than foam; the survey checks the wall first.
- Free survey in OX28 and nearby
- Guide price from £125 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Witney
Postcode, service and a phone number is all we need.
What's included
- Vapour-open, so moisture in solid walls can dry outwards
- Finished in mineral or silicone render, or brick slip
- Better sound reduction than foam boards
- Heavier than EPS, so more fixings and careful handling
Local considerations in Witney
Surveys in Witney also cover the surrounding OX28 district and towns such as Oxford and Abingdon. Witney sits around 10 miles from Oxford. 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.
Much of Oxfordshire sits in the lower wind-driven rain exposure bands, which keeps the choice of finishes wide — though hilltop, coastal and exposed gable walls can still need a tougher specification, so we check the actual site.
For homes in Witney near busy roads, mineral wool's sound reduction can be a reason to choose it.
- Postcode district
- OX28
- County or area
- Oxfordshire
- Nation
- England
- Nearby
- Oxford, Abingdon, Didcot, Bicester
Planning and building control in England
For a house in Witney, 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.
If the work covers more than half of a wall, or a quarter of the building's whole envelope, it counts as renovating a thermal element, with a target of about 0.30 W/m²K where feasible.
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.
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 Witney
| 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
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 Witney: questions
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.
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.
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.
Do you cover Witney?
Yes — we survey and quote mineral wool external wall insulation in Witney (OX28) and nearby Oxford, Abingdon and Didcot, with a fixed written price before any work starts.