Commercial EWI · Kent
Commercial and public building EWI in Sevenoaks
From Sevenoaks to Tonbridge, we price commercial external wall insulation after a measured survey — no guesswork, and no work starts until the price is agreed in writing. We provide drawings and finish samples for planning applications on Sevenoaks commercial buildings.
- Free survey in TN13 and nearby
- Guide price from £110 per m² + scaffold, + VAT
- Fixed written price before work starts
Free survey in Sevenoaks
Postcode, service and a phone number is all we need.
What's included
- Contract roles under CDM 2015 agreed at the start
- Programmes phased around opening hours and term dates
- Clear handover file with system documentation
- Colour and texture options to suit brand or setting
Before we quote in Sevenoaks
Surveys in Sevenoaks also cover the surrounding TN13 district and towns such as Tonbridge and Swanley. It's roughly 14 miles from Sevenoaks to Maidstone, the largest town 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.
For commercial premises in Sevenoaks, we programme the work around opening hours so the building can keep trading.
- Postcode district
- TN13
- County or area
- Kent
- Nation
- England
- Nearby
- Tonbridge, Swanley, Tunbridge Wells, Chislehurst
England: planning and regulations
For a house in Sevenoaks, external insulation or render is often permitted development if it looks similar to the existing walls; conservation areas, flats, commercial buildings and listed buildings need permission or consent, so we check your address first.
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.
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 Sevenoaks
| 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.
How it works
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.
Commercial EWI in Sevenoaks: questions
Do you provide a maintenance plan?
Yes — the handover includes the system documents and recommended inspection and cleaning intervals.
Can the building stay open during the works?
Usually, yes. The work is phased and the scaffold layout keeps entrances and escape routes clear.
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.
Do you cover Sevenoaks?
Yes — we survey and quote commercial external wall insulation in Sevenoaks (TN13) and nearby Tonbridge, Swanley and Tunbridge Wells, with a fixed written price before any work starts.