Silicone render · Northern Ireland
Silicone render in County Londonderry
Planning silicone render anywhere in County Londonderry? We cover towns including Derry~Londonderry and Coleraine, and check planning and building control for each address. If you're re-rendering in County Londonderry, we'll show you what adding insulation under the silicone would cost at the same time.
- Free survey and fixed written price
- Guide price from £66 per m² + scaffold, inc VAT
- Planning and building control checked for Northern Ireland
Free survey in County Londonderry
Tell us the postcode and what you need.
Part of every quote
- Through-coloured — no painting needed
- Can also go straight onto prepared masonry
- Fine, even grain from about 1–2mm
- Vapour-open, so walls can still breathe
- Water-repellent surface that dries quickly after rain
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.
On tree-shaded or north-facing walls in County Londonderry, silicone's water repellence helps it stay cleaner for longer.
- Nation
- Northern Ireland
- Region
- Northern Ireland
- Towns covered
- Derry~Londonderry, Coleraine, Limavady, Magherafelt
- Guide price
- From £66 per m² + scaffold · inc VAT
Permissions in Northern Ireland
In Northern Ireland, permitted development is set by the Planning (General Permitted Development) Order (NI) 2015. Changing the external appearance of a house may need permission, and conservation areas, flats, commercial buildings and listed buildings need planning permission or listed building consent. Check with your council's planning office.
Insulating external walls is building work under the Building Regulations (Northern Ireland) 2012, handled by council building control, with Technical Booklet F1 covering conservation of fuel and power in dwellings.
Is silicone render maintenance-free?
Not quite. It stays cleaner than most renders because water runs off and dries quickly, but north-facing or tree-shaded walls can still gather algae. A gentle biocide wash every few years keeps it looking new. Pressure washing is avoided because it can damage the surface.
Silicone render prices in County Londonderry
| Item | Guide price | Notes |
|---|---|---|
| Silicone render on masonry (with base coat + mesh) | £66–£102 per m²inc VAT | Excluding scaffold |
| Front and side of a semi (≈60 m²) | £3,960–£6,120inc VAT | Plus scaffold |
| As the finish on EWI | Included in EWI rates |
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.
Silicone render in County Londonderry: questions
How long does silicone render take to dry?
It's touch-dry within hours but needs dry weather above about 5°C for the first day or two to cure properly.
Can I paint silicone render later?
Yes, with a compatible silicone paint, though through-coloured render rarely needs it.
Can silicone render go over old render?
If the old render is sound and well bonded, often yes after cleaning and priming. Hollow or cracked areas are cut out and repaired first.
Do you cover all of County Londonderry?
Yes. We survey and quote silicone render 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.