Mineral wool EWI · Berkshire
Mineral wool external wall insulation in Slough
Mineral wool external wall insulation in Slough: free survey, written specification and a fixed price, with the details that keep walls dry planned from the start. Older solid-walled homes in Slough can suit a vapour-open mineral wool build-up better than foam; the survey checks the wall first.
- Free survey in SL1 and nearby
- Guide price from £125 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Slough
Postcode, service and a phone number is all we need.
Part of every quote
- Used on blocks of flats and buildings with storeys above 11m
- Non-combustible board (typically Euroclass A1 or A2-s1,d0 as part of the system)
- Better sound reduction than foam boards
- Finished in mineral or silicone render, or brick slip
Local considerations in Slough
As well as Slough itself, we quote in Windsor, Maidenhead and Gerrards Cross. It's roughly 17 miles from Slough to Reading, the largest town in Berkshire. 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 Berkshire 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 Slough near busy roads, mineral wool's sound reduction can be a reason to choose it.
- Postcode district
- SL1
- County or area
- Berkshire
- Nation
- England
- Nearby
- Windsor, Maidenhead, Gerrards Cross, Uxbridge
Permissions in England
Before quoting in Slough, we check whether the property is in a conservation area, under an Article 4 direction or listed, because that decides whether changing the outside needs planning permission.
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.
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 Slough
| 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 Slough: questions
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.
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 Slough?
Yes — we survey and quote mineral wool external wall insulation in Slough (SL1) and nearby Windsor, Maidenhead and Gerrards Cross, with a fixed written price before any work starts.