Render cleaning · Northern Ireland
Render cleaning and treatment in County Londonderry
We provide render cleaning across County Londonderry, including Derry~Londonderry, Coleraine and Limavady, with a free survey and fixed written price. We clean render in County Londonderry 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 Northern Ireland
Free survey in County Londonderry
Tell us the postcode and what you need.
What you get
- Biocide treatment that continues to work after cleaning
- Safe for silicone, acrylic, monocouche and EWI finishes
- Plants, windows and surfaces protected
- Low-pressure application — no high-pressure jetting
- Optional silicone paint to refresh faded colour
Homes and walls in County Londonderry
Northern Ireland has many rendered and pebble-dashed homes, older solid-walled rural houses, and estates built by the Housing Executive.
Parts of County Londonderry 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.
Shaded and north-facing walls in County Londonderry often need render cleaning sooner than sunny elevations.
- Nation
- Northern Ireland
- Region
- Northern Ireland
- Towns covered
- Derry~Londonderry, Coleraine, Limavady, Magherafelt
- Guide price
- From £10 per m² inc VAT
Northern Ireland: planning and regulations
Repairs, cleaning and like-for-like patching don't usually need planning permission. If the work grows into replacing most of a wall's render, we check with the council's building standards or building control team first.
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 County Londonderry
| 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
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.
Render cleaning in County Londonderry: 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 County Londonderry?
Yes. We survey and quote render cleaning across County Londonderry, including Derry~Londonderry, Coleraine, Limavady, Magherafelt.
Do I need planning permission in Northern Ireland?
In Northern Ireland, permitted development is set by the Planning (General Permitted Development) Order (NI) 2015. We check your address before quoting.