External rendering is applying a protective, weather-resistant coating to the outside walls of a house, using sand and cement, monocouche or thin-coat silicone render, to give a smooth or textured finish that protects the masonry and improves appearance.
From a first conversation about external rendering to the day the site is cleared, homeowners in Gelligaer deal with us directly. We come out to measure up at no cost, explain the choices in plain terms and send a written quote. For context, comparable work in Wales usually falls within £6,400–£14,500 including VAT, and it is available across CF82.
- Guide price
- £6,400–£14,500 inc VAT
- Time on site
- 1–3 weeks on site, depending on weather
- Postcodes
- CF82
- Planning rules
- Wales
- Local area
- Caerphilly
- Survey
- Free, with a written quote
How much does external rendering cost in Gelligaer?
Use the table to gauge the cost of external rendering in Gelligaer before we visit. Figures include VAT and are scaled for Wales, coming out about 8% below the national guide, which gives £6,400–£14,500 overall. After a free survey, you receive a fixed written price.
| Type of job | What it usually involves | Guide in Gelligaer |
|---|---|---|
| Front elevation or small terrace | One elevation or a small terraced house, including scaffolding and preparation. | £2,800–£6,400 |
| Typical semi-detached | All rendered walls of a 3-bed semi in monocouche or silicone, with scaffolding. | £6,400–£14,500 |
| Detached or full strip and re-render | Larger houses, or homes needing old render removed and walls repaired first. | £14,000–£27,500 |
The main things that change the figure:
- Wall area to be rendered and the height of the house
- Render system: sand and cement, monocouche or silicone
- Removing old render or pebbledash and repairing the walls
- Scaffolding, access and protection of neighbouring property
What does the job include in Gelligaer?
- Survey of walls, existing render, cracks and damp-proof course
- Scaffolding erected and removed, with neighbours' access agreed
- Windows, doors and surfaces masked and protected
- Mesh reinforcement and base coats to suit the chosen system
- Finish coat in your chosen colour and texture
- Making good around pipes, vents and fixings, and a site clean-up
Building in Gelligaer
The Rhondda, Cynon and Merthyr valleys are lined with stone terraces built for mining families, stepped along steep hillsides. Pontypridd, Caerphilly and Merthyr Tydfil have Victorian centres, and Bridgend has grown with large modern estates alongside interwar and post-war housing.
Valley terraces commonly need repointing, roof repairs, rendering and window replacement, and loft conversions can add useful space. Newer estate homes often take garage conversions, porches and landscaping.
In Gelligaer, as elsewhere in Mid Glamorgan, we take the building's age and construction into account before recommending anything, because both can change what is involved in external rendering.
Planning and building rules in Gelligaer
Because Gelligaer falls under Wales's rules, the guidance below is the version relevant to you. Before sending a price, we check your property's position with the council.
In Wales, rendering or cladding may need planning permission in conservation areas, and listed buildings need consent.
Building Regulations in Wales can require insulation upgrades when a large part of an external wall is renovated.
Rules change and every property is different, so we check the planning history and constraints for your address before we quote.
What happens after you get in touch?
A visit to your home
It starts with a survey at the property, free of charge. We check condition, access and services, ask how you want the finished result to look, and answer any questions you have about external rendering.
Price and scope agreed
We turn the survey notes into a written quote. The price is fixed for the specification we agree, and the document sets out materials, scope and payment stages in plain language.
Getting ready
Preparation matters as much as the build. We agree access, parking and working hours with you, order materials in good time, and confirm any permissions so the job isn't held up once it starts.
Build and hand over
The work is carried out to the agreed specification, with floors and furniture protected and the site kept tidy. At the end we clean up, walk through the finished job with you and hand over any certificates.
Why homeowners choose us
External rendering in Gelligaer: questions
How much does it cost to render a house?
Rendering a typical 3-bed semi costs £6,400–£14,500, including scaffolding and preparation. As a guide, allow around £60–£120 per square metre of wall plus fixed costs for scaffolding and set-up. Sand and cement is the lowest-cost system, while silicone thin-coat costs more but needs no painting. Removing old render or pebbledash first adds noticeably to the price. We confirm a fixed figure after the survey.
How long does rendering take?
Rendering a typical semi-detached house takes around one to three weeks. Scaffolding goes up first, then removal of old render, repairs, beads and mesh. Base coats need time to cure before the finish coat. Weather has a big effect, because render should not be applied in rain, frost or strong heat. We give you an expected programme with the quote.
Do I need planning permission in Gelligaer?
It depends on the work, the size of the project, your property type and whether the building is listed or in a conservation area. Gelligaer is in Wales, so Wales's rules apply. Many smaller jobs need no planning application, but some still need building control approval. We check what applies to your address before quoting.
Do I need planning permission to render my house?
Whether rendering needs planning permission depends on how it changes the appearance, your home's location, whether it is listed or in a conservation area, and which UK nation you are in. Rendering over brick may need permission in some places, while replacing existing render like for like often does not. Listed buildings need consent. We check the position before quoting.
Who do I deal with during the job?
One point of contact manages your project from survey to handover. They schedule the trades working under our contract, keep you updated on progress, and are the person to call with any question. You don't need to coordinate builders, electricians or decorators separately, because that is part of what we do.
Nearby towns
Gelligaer and its CF82 postcodes are part of our coverage. Homeowners in Blackwood, Pontypridd and Caerphilly can also book a free survey with us and receive a written price for their job.

