Flats and blocks · West Sussex
EWI for flats and blocks in East Grinstead
Quotes for EWI for flats and blocks in East Grinstead list the system, the detailing and the VAT position in writing, so you know exactly what's included. For blocks in East Grinstead, we start with height, storeys and the planning position, because those decide the system.
- Free survey in RH19 and nearby
- Guide price from £110 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in East Grinstead
Postcode, service and a phone number is all we need.
What the job covers
- Planning permission is needed for flats and maisonettes
- One programme and one finish across the whole building
- Mineral wool systems where building height or guidance requires them
- Cavity barriers and fire-stopping detailed at compartment floors

Before we quote in East Grinstead
We cover East Grinstead and nearby Horley, Crawley and Crowborough. It's roughly 8 miles from East Grinstead to Crawley, the largest town in West Sussex. 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 West Sussex: 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.
Freeholders and managing agents in East Grinstead get a written specification and pricing they can share with owners.
- Postcode district
- RH19
- County or area
- West Sussex
- Nation
- England
- Nearby
- Horley, Crawley, Crowborough, Haywards Heath
England: planning and regulations
Before quoting in East Grinstead, 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 East Grinstead
| 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
Enquiry
Send your postcode and a few details.
Measured survey
Walls, damp, eaves, cills and services recorded.
Written price
A fixed price with the specification attached.
Work and handover
Installed, inspected and documents handed over.
Flats and blocks in East Grinstead: questions
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 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.
Do you cover East Grinstead?
Yes — we survey and quote EWI for flats and blocks in East Grinstead (RH19) and nearby Horley, Crawley and Crowborough, with a fixed written price before any work starts.