Render cleaning · Wales
Render cleaning and treatment in South Glamorgan
Quotes for render cleaning in South Glamorgan set out the system, detailing, access and VAT position in writing. Shaded and north-facing walls in South Glamorgan often need render cleaning sooner than sunny elevations.
- Free survey and fixed written price
- Guide price from £10 per m² inc VAT
- Planning and building control checked for Wales
Free survey in South Glamorgan
Tell us the postcode and what you need.
What you get
- Safe for silicone, acrylic, monocouche and EWI finishes
- Most houses done in a day
- Optional silicone paint to refresh faded colour
- Plants, windows and surfaces protected
- Biocide treatment that continues to work after cleaning
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.
For South Glamorgan homes with faded render, we price a clean and a clean-and-refresh option.
- Nation
- Wales
- Region
- South Wales
- Towns covered
- Cardiff, Barry, Penarth
- Guide price
- From £10 per m² inc VAT
Permissions in Wales
Repairs, cleaning and like-for-like patching don't usually need planning permission or building control. If repairs grow into re-rendering more than half of a wall, Building Regulations energy rules can apply.
Listed buildings are the exception: even small external repairs can need listed building consent, so tell us if your property is listed.
Why not pressure wash render?
Thin-coat renders are only 1–2mm thick. High-pressure jetting can erode the texture, strip colour, force water behind beads and cracks, and damage the insulation system underneath. A soft wash uses chemistry rather than pressure to do the work.
Render cleaning and treatment prices in South Glamorgan
| Item | Guide price | Notes |
|---|---|---|
| Soft wash and biocide | £10–£19 per m²inc VAT | Minimum £475 |
| Clean and silicone paint refresh | £22–£36 per m²inc VAT | Excluding scaffold |
| Typical semi, all elevations | £835–£1,555inc VAT | Clean only |
Confirmed by a fixed written quote after survey. Prices include VAT at 20%.
What happens next
Get a guide price
Try the online quote tool for a ballpark figure.
Book the survey
A visit at a time that suits you.
Agree the quote
Nothing starts until you've signed the written price.
We do the work
Planned around weather, with you kept informed.
Render cleaning in South Glamorgan: questions
Will the green come back?
The biocide slows regrowth considerably, but shaded, damp walls can need retreating every few years.
Do you need scaffolding?
Usually not for a two-storey house; poles and low-pressure equipment reach most walls.
Can faded render be refreshed?
Yes — a compatible silicone paint restores colour without making the wall less breathable.
Do you cover all of South Glamorgan?
Yes. We survey and quote render cleaning 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.