Commercial EWI · Greater London
Commercial and public building EWI in Blackheath
We quote commercial external wall insulation for homes in Blackheath (SE3) and nearby Catford and Eltham, with guide prices online and a free survey to fix the price. For commercial premises in Blackheath, we programme the work around opening hours so the building can keep trading.
- Free survey in SE3 and nearby
- Guide price from £110 per m² + scaffold, + VAT
- Fixed written price before work starts
Free survey in Blackheath
Postcode, service and a phone number is all we need.
Included as standard
- Clear handover file with system documentation
- Colour and texture options to suit brand or setting
- Non-combustible systems where use or height requires them
- Contract roles under CDM 2015 agreed at the start
Homes and walls in Blackheath
We also cover Catford and Eltham, close to Blackheath. London's housing includes a large stock of Victorian and Edwardian solid-wall terraces, inter-war semis and post-war blocks, and conservation areas cover many streets — so planning is often the first question for external work.
Much of Greater London 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 Blackheath are usually phased by elevation, with noisy stages in holidays where possible.
- Postcode district
- SE3
- County or area
- Greater London
- Nation
- England
- Nearby
- Catford, Eltham, Peckham, Canning Town
Planning and building control in England
For a house in Blackheath, 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.
Insulating or re-rendering more than half of a wall's area brings in Part L of the Building Regulations, so building control is notified and the wall is upgraded to about 0.30 W/m²K where practical.
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 Blackheath
| 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
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.
Commercial EWI in Blackheath: questions
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 provide a maintenance plan?
Yes — the handover includes the system documents and recommended inspection and cleaning intervals.
Do you cover Blackheath?
Yes — we survey and quote commercial external wall insulation in Blackheath (SE3) and nearby Catford, Eltham and Peckham, with a fixed written price before any work starts.