Insulated render · Wales
Insulated render systems in South Glamorgan
Planning insulated render anywhere in South Glamorgan? We cover towns including Cardiff and Barry, and check planning and building control for each address. We bring finish samples to South Glamorgan surveys so colours can be judged in daylight against your roof and windows.
- Free survey and fixed written price
- Guide price from £105 per m² + scaffold, 0% VAT
- Planning and building control checked for Wales
Free survey in South Glamorgan
Tell us the postcode and what you need.
Included as standard
- Suitable for houses, extensions and whole buildings
- Designed and tested by the system manufacturer
- Through-coloured finishes in hundreds of shades
- Contrasting colours for bands, plinths and features
- Combines a new look with lower heat loss
Local considerations in South Glamorgan
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.
For houses in South Glamorgan with shallow eaves, the insulated render thickness is planned with the roofline in mind.
- Nation
- Wales
- Region
- South Wales
- Towns covered
- Cardiff, Barry, Penarth
- Guide price
- From £105 per m² + scaffold · 0% VAT
Wales: planning and regulations
Permitted development rules for houses in Wales are similar to England's: a similar-appearance finish on a house is often permitted, while conservation areas, National Parks, Areas of Outstanding Natural Beauty, flats, commercial buildings and listed buildings need permission or consent. Your local planning authority has the final word.
The Building Regulations as they apply in Wales treat insulating or re-rendering more than half of a wall's area, or more than a quarter of the building's whole envelope, as renovating a thermal element, with Approved Document L (Wales) setting the target. Building control is involved before work starts.
What texture will it have?
Thin-coat renders come in grain sizes, typically 1–2mm. A 1.5mm grain is a common middle ground: fine enough to look smooth from the street, coarse enough to hide minor imperfections.
Insulated render systems prices in South Glamorgan
| Item | Guide price | Notes |
|---|---|---|
| Insulated render (EPS + silicone) | £105–£145 per m²0% VAT | Excluding scaffold |
| Mineral wool insulated render | £125–£170 per m²0% VAT | |
| Contrasting colour features | +£8–£20 per m²0% VAT | Where used |
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.
How it works
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.
Insulated render in South Glamorgan: questions
Does insulated render need painting?
Through-coloured silicone and acrylic renders don't need painting. Mineral renders are usually painted with a compatible masonry paint.
Will my house look different?
Yes, if it was brick or pebble dash. If you want to keep a brick look, a brick-slip finish over the insulation is an option.
How long does insulated render last?
Typically 25–30 years or more with maintenance; the manufacturer's documentation sets the service life for the specific system.
Do you cover all of South Glamorgan?
Yes. We survey and quote insulated render across South Glamorgan, including Cardiff, Barry, Penarth.
Do I need planning permission in Wales?
Permitted development rules for houses in Wales are similar to England's: a similar-appearance finish on a house is often permitted, while conservation areas, National Parks, Areas of Outstanding Natural Beauty, flats, commercial buildings and listed buildings need permission or consent. We check your address before quoting.