Commercial EWI · England
Commercial and public building EWI in Kent
Get guide prices online, then a free survey and fixed quote for commercial external wall insulation in Kent, including Gillingham and Chatham. We provide drawings and finish samples for planning applications on Kent commercial buildings.
- Free survey and fixed written price
- Guide price from £110 per m² + scaffold, + VAT
- Planning and building control checked for England
Free survey in Kent
Tell us the postcode and what you need.
Included as standard
- Contract roles under CDM 2015 agreed at the start
- Clear handover file with system documentation
- Programmes phased around opening hours and term dates
- Non-combustible systems where use or height requires them
- Colour and texture options to suit brand or setting
Before we quote in Kent
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 Kent 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.
Schools and community buildings around Kent are usually phased by elevation, with noisy stages in holidays where possible.
- Nation
- England
- Region
- South East
- Towns covered
- Maidstone, Gillingham, Chatham, Tunbridge Wells, Folkestone, Ashford (Kent), Margate, Dartford…
- Guide price
- From £110 per m² + scaffold · + VAT
Permissions in England
For houses, external wall insulation and render are often permitted development where the finish looks similar to the existing walls. Planning permission is usually needed in conservation areas, National Parks, National Landscapes, the Broads and World Heritage Sites (where cladding a house in stone, artificial stone, pebble dash, render, timber, plastic or tiles isn't permitted development), for flats and maisonettes, for commercial buildings, under an Article 4 direction, or where the look changes noticeably. Listed buildings need listed building consent.
Renovating more than half of a wall's area — insulating it, or stripping and re-rendering it — or more than a quarter of the building's whole external envelope brings in the energy requirements of Part L, so building control needs to be involved and the wall should reach about 0.30 W/m²K where that's technically, functionally and economically feasible.
Combustible materials are banned in the external walls of relevant buildings 18 metres and over (regulation 7(2)), and Approved Document B guidance also covers residential buildings with a storey 11 metres or more above ground. Higher-risk buildings go through the Building Safety Regulator.
Does commercial EWI need planning permission?
Generally yes — permitted development rights for external wall changes are written for houses. Applications need elevations showing the projection, finish and colours, and details at eaves and openings.
Commercial and public building EWI prices in Kent
| Item | Guide price | Notes |
|---|---|---|
| Insulated render system | £110–£200 per m²+ VAT | Priced on survey |
| Render refurbishment without insulation | £55–£95 per m²+ VAT | Silicone or mineral |
| Access and scaffold | Per building | Includes edge protection |
Confirmed by a fixed written quote after survey. Business prices shown before VAT, which is added at 20%. Buildings used solely for a relevant charitable purpose can qualify for 0% on insulation.
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.
Commercial EWI in Kent: questions
Do you provide a maintenance plan?
Yes — the handover includes the system documents and recommended inspection and cleaning intervals.
Is VAT 0% on commercial insulation?
Usually not. The zero rate covers insulation installed in residential accommodation and, since 1 February 2024, buildings used solely for a relevant charitable purpose, such as many charity-run village halls. Other commercial work is standard-rated.
Can the building stay open during the works?
Usually, yes. The work is phased and the scaffold layout keeps entrances and escape routes clear.
Do you cover all of Kent?
Yes. We survey and quote commercial external wall insulation across Kent, including Maidstone, Gillingham, Chatham, Tunbridge Wells, Folkestone.
Do I need planning permission in England?
For houses, external wall insulation and render are often permitted development where the finish looks similar to the existing walls. We check your address before quoting.