Render cleaning · Wales
Render cleaning and treatment in Gwynedd
Quotes for render cleaning in Gwynedd set out the system, detailing, access and VAT position in writing. We clean render in Gwynedd with low pressure only, so thin-coat and EWI finishes aren't damaged.
- Free survey and fixed written price
- Guide price from £10 per m² inc VAT
- Planning and building control checked for Wales
Free survey in Gwynedd
Tell us the postcode and what you need.
What you get
- Plants, windows and surfaces protected
- Low-pressure application — no high-pressure jetting
- Biocide treatment that continues to work after cleaning
- Optional silicone paint to refresh faded colour
- Safe for silicone, acrylic, monocouche and EWI finishes
Homes and walls in Gwynedd
North Wales has many solid stone and slate-built homes, Victorian seaside terraces and post-war council estates.
Parts of Gwynedd fall in the higher wind-driven rain exposure bands, especially coastal and upland sites, so render specification, movement joints and detailing at cills, verges and the base of the wall matter more than usual.
We clean render in Gwynedd with low pressure only, so thin-coat and EWI finishes aren't damaged.
- Nation
- Wales
- Region
- North Wales
- Towns covered
- Bangor (Gwynedd), Holyhead, Caernarfon, Llangefni
- 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.
How long does cleaned render stay clean?
It depends on shade, trees and exposure. Many walls stay clean for several years after a biocide treatment. North-facing, shaded and damp walls may need treating more often.
Render cleaning and treatment prices in Gwynedd
| 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%.
From enquiry to finished wall
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 Gwynedd: questions
Can faded render be refreshed?
Yes — a compatible silicone paint restores colour without making the wall less breathable.
Do you need scaffolding?
Usually not for a two-storey house; poles and low-pressure equipment reach most walls.
Will the green come back?
The biocide slows regrowth considerably, but shaded, damp walls can need retreating every few years.
Do you cover all of Gwynedd?
Yes. We survey and quote render cleaning across Gwynedd, including Bangor (Gwynedd), Holyhead, Caernarfon, Llangefni.
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.