Flats and blocks · Gwent
EWI for flats and blocks in Caerphilly
Need EWI for flats and blocks in Caerphilly? Tell us about the property and we'll arrange a free survey and a written quote. For blocks in Caerphilly, we start with height, storeys and the planning position, because those decide the system.
- Free survey in CF83 and nearby
- Guide price from £110 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Caerphilly
Postcode, service and a phone number is all we need.
Part of every quote
- We work with managing agents on resident communication
- Planning permission is needed for flats and maisonettes
- One programme and one finish across the whole building
- Mineral wool systems where building height or guidance requires them
What we look for in Caerphilly
We cover Caerphilly and nearby Risca, Pontypridd and Cardiff. 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.
Freeholders and managing agents in Caerphilly get a written specification and pricing they can share with owners.
- Postcode district
- CF83
- County or area
- Gwent
- Nation
- Wales
- Nearby
- Risca, Pontypridd, Cardiff, Newport (Gwent)
Approvals 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.
In Wales, insulating or re-rendering more than half of a wall's area is treated as renovating a thermal element under Approved Document L (Wales), so building control is involved before work starts.
Wales applies its own external wall fire rules, updated in 2025; on taller residential buildings we specify non-combustible mineral wool systems.
How disruptive is it for residents?
Most work happens from scaffolding outside. Residents may need to allow brief access to extend window cills, vents or flues from the inside. We provide a notice for residents covering dates, scaffold, and how to raise concerns.
EWI for flats and blocks prices in Caerphilly
| Item | Guide price | Notes |
|---|---|---|
| Mineral wool system on a low-rise block | £110–£190 per m²0% VAT | Priced on survey |
| Scaffold and access | Priced per building | Includes licences where needed |
| Specification and pricing pack for consultation | Included with quote |
Confirmed by a fixed written quote after survey. 0% VAT: installing insulation in a home is zero-rated until 31 March 2027, so these figures are the total; 5% applies from 1 April 2027.
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.
Flats and blocks in Caerphilly: questions
Who pays for EWI on a leasehold block?
In England and Wales, usually the leaseholders through the service charge, depending on the lease, and the landlord must follow the Section 20 consultation process for major works.
Do you work on high-rise buildings?
Tell us the height and number of storeys. Buildings in the higher-risk category have a separate regulatory route, and we'll say plainly if we're not the right contractor.
Do flats need planning permission for EWI?
Yes. Permitted development rights for external alterations apply to houses, not flats or maisonettes, so an application is needed.
Do you cover Caerphilly?
Yes — we survey and quote EWI for flats and blocks in Caerphilly (CF83) and nearby Risca, Pontypridd and Cardiff, with a fixed written price before any work starts.