Monocouche render · Wales
Monocouche render in South Glamorgan
Monocouche render across South Glamorgan: measured survey, clear specification and a fixed written price before any work starts. For South Glamorgan homeowners matching a new extension to an existing rendered house, we compare monocouche and silicone samples first.
- Free survey and fixed written price
- Guide price from £54 per m² + scaffold, inc VAT
- Planning and building control checked for Wales
Free survey in South Glamorgan
Tell us the postcode and what you need.
What's included
- Beads and movement joints control cracking
- Applied in one or two passes, often by spray machine
- Not the finish used over insulation boards
- Good for new blockwork and extensions
- Through-coloured, with a scraped texture

Homes and walls 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.
We plan monocouche in South Glamorgan for settled weather so each elevation can be finished in one go.
- Nation
- Wales
- Region
- South Wales
- Towns covered
- Cardiff, Barry, Penarth
- Guide price
- From £54 per m² + scaffold · inc VAT
Planning and building control 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. 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.
Where is monocouche used?
Monocouche is best on new or sound blockwork and brickwork with consistent suction — extensions, new builds and garden walls. It's applied thicker than thin-coat renders and scraped once firm to reveal the texture.
Monocouche render prices in South Glamorgan
| Item | Guide price | Notes |
|---|---|---|
| Monocouche on blockwork | £54–£84 per m²inc VAT | Excluding scaffold |
| Single-storey extension | £2,395–£4,195inc VAT | Typical |
| Beads and movement joints | Included |
Confirmed by a fixed written quote after survey. Prices include VAT at 20%.
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.
Monocouche render in South Glamorgan: questions
How long does monocouche last?
Typically 20 years or more on a suitable wall, depending on exposure and detailing.
Does monocouche need painting?
No — it's through-coloured. Cleaning every few years keeps it looking fresh.
Is monocouche waterproof?
It's water-resistant and sheds rain, while still allowing some vapour through.
Do you cover all of South Glamorgan?
Yes. We survey and quote monocouche 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.