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.
Homeowners in Llantwit Major usually consider external rendering for one of a few reasons: something has worn out, the house no longer suits the way they live, or they are getting it ready to sell. We visit, agree a specification and put a fixed price in writing. Most jobs like this take 1–3 weeks on site, depending on weather, and we work across South Glamorgan, including Bridgend, Barry and Porthcawl.
- Guide price
- £6,400–£14,500 inc VAT
- Time on site
- 1–3 weeks on site, depending on weather
- Postcodes
- CF61
- Planning rules
- Wales
- Local area
- The Vale of Glamorgan
- Survey
- Free, with a written quote
What should you budget for external rendering in Llantwit Major?
The table below shows guide prices for external rendering in Llantwit Major. They are based on rates in Wales, which run about 8% below the national guide, giving an overall range of £6,400–£14,500. All figures include VAT and are firmed up after a free site survey.
| Type of job | What it usually involves | Guide in Llantwit Major |
|---|---|---|
| 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:
- Render system: sand and cement, monocouche or silicone
- Removing old render or pebbledash and repairing the walls
- Scaffolding, access and protection of neighbouring property
- Detailing around windows, bays, sills and pipes
What’s included?
- Survey of walls, existing render, cracks and damp-proof course
- Removal of loose or failed render and pebbledash where needed
- 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 Llantwit Major
Cardiff has large areas of bay-fronted Victorian and Edwardian terraces in districts such as Roath, Canton and Cathays, plus interwar suburbs, post-war estates and modern flats around Cardiff Bay. Penarth has Victorian villas, Barry mixes terraces with newer estates, and Vale of Glamorgan villages are often built of local limestone.
Mild but wet, with coastal exposure along the Severn estuary and Bristol Channel affecting render, roofline and windows.
So when we survey a Llantwit Major property for external rendering, the first step is working out how it was built and what has been changed since.
Planning and building rules in Llantwit Major
As Llantwit Major is in Wales, read the following with that system of planning and building control in mind. We check what applies to your house with the council before you receive a quote.
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.
From survey to handover
A visit to your home
First, someone visits your home in Llantwit Major to see the space, take measurements and note anything that could affect the work, such as access or the condition of what is there. There is no charge for this visit.
Price and scope agreed
After the survey we send a quote for external rendering that fixes the price for the scope we've agreed. If you want to change materials or scope, we revise it in writing before anything is booked.
Getting ready
Once you accept, we agree start dates, order materials and deal with any planning, building control or neighbour notices the job needs. You'll know who is coming and when before work begins.
Build and hand over
Work goes ahead as scheduled and you deal with one contact throughout. When the last trade leaves, we clear and clean the site, talk you through what has been done and pass on any certificates and care instructions.
Working with SK Home Improvements
External rendering in Llantwit Major: questions
Which postcodes in Llantwit Major do you cover?
We cover CF61, along with the rest of South Glamorgan. If your postcode is not listed, get in touch anyway: our coverage is UK-wide, and we can usually arrange a survey wherever you live. Enter your postcode in the guide-price tool or contact form and we will confirm.
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.
Which render system should I choose?
The right render depends on your walls and how much upkeep you want. Sand and cement is the lowest-cost option but needs repainting every few years. Monocouche is coloured through, so it needs no painting, and suits block and brick walls. Silicone thin-coat is flexible, water-repellent and stays cleaner, but costs more. Lime render suits older solid walls. We recommend a system after inspecting your walls.
How do I look after silicone or monocouche render?
Through-coloured render needs little upkeep. Check it once a year for cracks or damage, especially around windows and pipes, and keep gutters clear so water does not run down the walls. If green algae appears on shaded walls, a specialist render cleaner applied with a soft brush or low-pressure wash removes it. Avoid high-pressure jet washing, which can damage the surface.
Do I need planning permission in Llantwit Major?
It depends on the work, the size of the project, your property type and whether the building is listed or in a conservation area. Llantwit Major 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.
Near Llantwit Major
If your address falls within CF61, we cover it. The same goes for neighbouring Bridgend, Barry and Porthcawl, which we include alongside Llantwit Major when arranging surveys and quotes.

