Render cleaning · South Glamorgan
Render cleaning and treatment in Cardiff
From Cardiff to Penarth, we price render cleaning after a measured survey — no guesswork, and no work starts until the price is agreed in writing. For Cardiff homes with faded render, we price a clean and a clean-and-refresh option.
- Free survey in CF10 and nearby
- Guide price from £10 per m² inc VAT
- Fixed written price before work starts
Free survey in Cardiff
Postcode, service and a phone number is all we need.
What's included
- Safe for silicone, acrylic, monocouche and EWI finishes
- Most houses done in a day
- Low-pressure application — no high-pressure jetting
- Biocide treatment that continues to work after cleaning
What we look for in Cardiff
Surveys in Cardiff also cover the surrounding CF10 district and towns such as Penarth and Caerphilly. 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.
Shaded and north-facing walls in Cardiff often need render cleaning sooner than sunny elevations.
- Postcode district
- CF10
- County or area
- South Glamorgan
- Nation
- Wales
- Nearby
- Penarth, Caerphilly, Barry, Risca
Approvals in Wales
Small repairs and cleaning in Cardiff normally need no approvals. Listed buildings are the exception — even minor external work can need consent.
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 Cardiff
| 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
Tell us about the property
Use the quote tool or form, or call. Photos help.
Free survey
We measure, check the walls and confirm approvals.
Fixed written quote
System, details, access, exclusions and VAT in writing.
Installation
Scheduled for suitable weather, with a clear programme.
Render cleaning in Cardiff: questions
Do you need scaffolding?
Usually not for a two-storey house; poles and low-pressure equipment reach most walls.
Is render cleaning safe for EWI?
Yes, using low pressure and products suitable for thin-coat render.
Will the green come back?
The biocide slows regrowth considerably, but shaded, damp walls can need retreating every few years.
Do you cover Cardiff?
Yes — we survey and quote render cleaning in Cardiff (CF10) and nearby Penarth, Caerphilly and Barry, with a fixed written price before any work starts.