South Glamorgan · Wales
Render and insulation in Cardiff
Render and insulation in Cardiff: guide prices online, then a free survey and fixed written quote.
- Free survey in CF10 and nearby
- Fixed written price before work starts
- Guide prices online
Free survey in Cardiff
Tell us about the property. We reply on working days.
Services
Services in Cardiff
External wall insulation
- External wall insulation in Cardiff
- EPS insulation in Cardiff
- Mineral wool EWI in Cardiff
- Wood fibre EWI in Cardiff
- Non-traditional houses in Cardiff
- Park home insulation in Cardiff
- Flats and blocks in Cardiff
- Commercial EWI in Cardiff
Solid and internal wall insulation
Render finishes
- Insulated render in Cardiff
- Silicone render in Cardiff
- Monocouche render in Cardiff
- Lime render in Cardiff
- Brick slip EWI in Cardiff
- Acrylic render in Cardiff
Re-rendering, repairs and upkeep
Homes and walls in Cardiff
As well as Cardiff itself, we quote in Penarth, Caerphilly and Barry.
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 South Glamorgan: 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.
- Postcode district
- CF10
- County or area
- South Glamorgan
- Nation
- Wales
Approvals in Wales
For homes in Cardiff, 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.
Typical jobs and guide prices
| Item | Guide price | Notes |
|---|---|---|
| Re-rendering | From £90 per m² + scaffoldinc VAT | Strip and re-render (silicone system) |
| Internal wall insulation | From £75 per m²0% VAT | Insulated plasterboard, supplied and skimmed |
| Render repairs | From £475inc VAT | Small repairs, single visit |
| Covering pebble dash | From £72 per m² + scaffoldinc VAT | Render over sound pebble dash |
Insulation prices for homes are totals (0% VAT until 31 March 2027); render and repair prices include VAT at 20%. Confirmed in writing after a free survey. Full price guide
Nearby towns
Cardiff: questions
Do you cover Cardiff?
Yes — we survey and quote in Cardiff (CF10) and nearby Penarth, Caerphilly and Barry.
How much does external wall insulation cost in Cardiff?
Our guide is £105–£170 per m² depending on the system, plus scaffolding — roughly £10,200–£17,700 for a typical three-bed semi with EPS and silicone render. Installing insulation in a home is zero-rated for VAT until 31 March 2027, so that's the total. A free survey fixes the price.
Do I need planning permission in Cardiff?
We check Cardiff addresses for conservation areas and listing before quoting, because Welsh permitted development rules don't cover every external change.
Is VAT charged on wall insulation?
Installing wall insulation in homes is zero-rated until 31 March 2027, then 5%, so our insulation prices are totals. Render-only work and repairs carry VAT at 20%, and our prices for them include it.