Commercial EWI · Wiltshire
Commercial and public building EWI in Swindon
Need commercial external wall insulation in Swindon? Tell us about the property and we'll arrange a free survey and a written quote. For commercial premises in Swindon, we programme the work around opening hours so the building can keep trading.
- Free survey in SN1 and nearby
- Guide price from £110 per m² + scaffold, + VAT
- Fixed written price before work starts
Free survey in Swindon
Postcode, service and a phone number is all we need.
What's included
- Contract roles under CDM 2015 agreed at the start
- Non-combustible systems where use or height requires them
- Clear handover file with system documentation
- Programmes phased around opening hours and term dates

Before we quote in Swindon
We cover Swindon and nearby Chippenham, Witney and Stroud. The South West has many stone and solid-walled cottages, exposed coastal properties and a share of post-war system-built houses, including types such as the Cornish Unit.
Exposure to wind-driven rain varies across Wiltshire: 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.
Schools and community buildings around Swindon are usually phased by elevation, with noisy stages in holidays where possible.
- Postcode district
- SN1
- County or area
- Wiltshire
- Nation
- England
- Nearby
- Chippenham, Witney, Stroud, Newbury
England: planning and regulations
Before quoting in Swindon, 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.
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 Swindon
| 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
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 Swindon: 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.
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.
Do you cover Swindon?
Yes — we survey and quote commercial external wall insulation in Swindon (SN1) and nearby Chippenham, Witney and Stroud, with a fixed written price before any work starts.