Commercial EWI · Gwent
Commercial and public building EWI in Caerphilly
From Caerphilly to Risca, we price commercial external wall insulation after a measured survey — no guesswork, and no work starts until the price is agreed in writing. For commercial premises in Caerphilly, we programme the work around opening hours so the building can keep trading.
- Free survey in CF83 and nearby
- Guide price from £110 per m² + scaffold, + VAT
- Fixed written price before work starts
Free survey in Caerphilly
Postcode, service and a phone number is all we need.
What you get
- Programmes phased around opening hours and term dates
- Contract roles under CDM 2015 agreed at the start
- Planning applications supported with drawings and finish samples
- Colour and texture options to suit brand or setting
Before we quote in Caerphilly
We also cover Risca and Pontypridd, close to Caerphilly. It's roughly 9 miles from Caerphilly to Newport (Gwent), the largest town in Gwent. South Wales has long runs of solid-wall valley terraces, Victorian and Edwardian town housing and post-war council estates.
Exposure to wind-driven rain varies across Gwent: 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 Caerphilly are usually phased by elevation, with noisy stages in holidays where possible.
- Postcode district
- CF83
- County or area
- Gwent
- Nation
- Wales
- Nearby
- Risca, Pontypridd, Cardiff, Newport (Gwent)
Planning and building control in Wales
For homes in Caerphilly, the local planning authority decides any borderline cases; changing a brick house to render, or work on flats, usually needs an application in Wales.
Welsh Building Regulations expect walls to be upgraded when a substantial area is renewed, and building control signs the work off.
Wales applies its own external wall fire rules, updated in 2025; on taller residential buildings we specify non-combustible mineral wool systems.
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 Caerphilly
| 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 Caerphilly: questions
Do you handle the planning application?
We provide the technical information, drawings and samples an application needs; your agent or our designer can submit it.
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 Caerphilly?
Yes — we survey and quote commercial external wall insulation in Caerphilly (CF83) and nearby Risca, Pontypridd and Cardiff, with a fixed written price before any work starts.