Flats and blocks · Surrey
EWI for flats and blocks in Egham
Need EWI for flats and blocks in Egham? Tell us about the property and we'll arrange a free survey and a written quote. For blocks in Egham, we start with height, storeys and the planning position, because those decide the system.
- Free survey in TW20 and nearby
- Guide price from £110 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Egham
Postcode, service and a phone number is all we need.
Part of every quote
- Cavity barriers and fire-stopping detailed at compartment floors
- Planning permission is needed for flats and maisonettes
- We work with managing agents on resident communication
- Mineral wool systems where building height or guidance requires them

Egham: walls, weather and approvals
As well as Egham itself, we quote in Staines, Ashford (Surrey) and Windsor. It's roughly 8 miles from Egham to Woking, the largest town in Surrey. 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 Surrey 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 Egham, we agree access and resident notices with the managing agent before scaffold goes up.
- Postcode district
- TW20
- County or area
- Surrey
- Nation
- England
- Nearby
- Staines, Ashford (Surrey), Windsor, Slough
England: planning and regulations
Before quoting in Egham, 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.
How disruptive is it for residents?
Most work happens from scaffolding outside. Residents may need to allow brief access to extend window cills, vents or flues from the inside. We provide a notice for residents covering dates, scaffold, and how to raise concerns.
EWI for flats and blocks prices in Egham
| 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 Egham: questions
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.
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.
Who pays for EWI on a leasehold block?
In England and Wales, usually the leaseholders through the service charge, depending on the lease, and the landlord must follow the Section 20 consultation process for major works.
Do you cover Egham?
Yes — we survey and quote EWI for flats and blocks in Egham (TW20) and nearby Staines, Ashford (Surrey) and Windsor, with a fixed written price before any work starts.