Flats and blocks · Berkshire
EWI for flats and blocks in Slough
If you're planning EWI for flats and blocks in Slough, start with a free survey: we measure, check the walls and confirm planning and building control for your address. For blocks in Slough, we start with height, storeys and the planning position, because those decide the system.
- Free survey in SL1 and nearby
- Guide price from £110 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.
What the job covers
- One programme and one finish across the whole building
- We work with managing agents on resident communication
- Cavity barriers and fire-stopping detailed at compartment floors
- Planning permission is needed for flats and maisonettes

Before we quote in Slough
As well as Slough itself, we quote in Windsor, Maidenhead and Gerrards Cross. Slough is about 17 miles from Reading. 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.
On mixed-tenure blocks in Slough, we agree access and resident notices with the managing agent before scaffold goes up.
- Postcode district
- SL1
- County or area
- Berkshire
- Nation
- England
- Nearby
- Windsor, Maidenhead, Gerrards Cross, Uxbridge
Planning and building control 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.
Building control applies once more than half of a wall is insulated or re-rendered, or more than a quarter of the whole building envelope, and your written quote says how that's handled.
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 fire-safety rules apply?
For blocks with a storey 11 metres or more above ground, guidance points to external wall materials of limited combustibility, and combustible materials are banned in the external walls of relevant buildings 18 metres and over in England. Higher-risk buildings (18 metres or seven storeys and above, with at least two homes) go through the Building Safety Regulator. We specify non-combustible systems wherever these apply and tell you at enquiry stage if a building is outside our scope.
EWI for flats and blocks prices in Slough
| Item | Guide price | Notes |
|---|---|---|
| Mineral wool system on a low-rise block | £110–£190 per m²0% VAT | Priced on survey |
| Scaffold and access | Priced per building | Includes licences where needed |
| Specification and pricing pack for consultation | Included with quote |
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.
Flats and blocks in Slough: questions
Can one flat have external wall insulation on its own?
Rarely. The outside walls are usually owned by the freeholder, the result would look patchy, and planning is unlikely. Whole-building schemes are the norm.
Do flats need planning permission for EWI?
Yes. Permitted development rights for external alterations apply to houses, not flats or maisonettes, so an application is needed.
Do you work on high-rise buildings?
Tell us the height and number of storeys. Buildings in the higher-risk category have a separate regulatory route, and we'll say plainly if we're not the right contractor.
Do you cover Slough?
Yes — we survey and quote EWI for flats and blocks in Slough (SL1) and nearby Windsor, Maidenhead and Gerrards Cross, with a fixed written price before any work starts.