What to Know Before Rendering a House

Rendering a house costs between £4,000 and £9,000 for a typical three-bedroom property, depending on the materials you choose and whether scaffolding is needed. It protects your brickwork from the British weather and gives the outside of your home a clean, uniform finish. Choosing the right render helps keep rain out of the walls, but applying the wrong type can trap moisture and damage older walls.

What rendering does for a house

External render acts as a raincoat for your building. It is a wet coating applied over exterior walls that hardens into a protective shell. Plasterers and rendering specialists apply it to bare brickwork, blockwork or over old, sound render.

A good rendering job performs several distinct jobs for your property. It does more than just change the colour of the walls.

• Stops driving rain from penetrating the brickwork and causing damp inside the house.
• Protects soft or crumbling bricks from frost damage during the winter.
• Updates the look of a tired, mismatched or badly patched exterior.
• Bridges small surface cracks and hides structural repairs or extensions.
• Improves the thermal efficiency of the building if external insulation boards are added at the same time.

Render does not cure rising damp or structural movement. If you have underlying damp issues, leaking gutters or subsidence, you must fix those problems before applying a new coating. If you cover a wet wall, the moisture will eventually force the new render to crack and fall off.

The main types of render

The materials used to render houses have changed significantly. Traditional mixtures are still used for older homes, but modern synthetic systems dominate new builds and modern extensions. The type you choose dictates how the wall looks, how well it breathes, and whether it will need painting.

Sand and cement is the traditional, inexpensive option. A mixture of sharp sand, Portland cement and water is applied in two coats. The first is a scratch coat to provide a key, and the second is a smooth top coat. It is rigid, meaning it is prone to cracking if the house moves slightly. It is also a dull grey colour, so it is usually painted with exterior masonry paint once it has dried, and repainted from time to time.

Lime render is a traditional material made from lime putty or hydraulic lime and sand. It is highly flexible and breathable. This means it can absorb moisture from the air and allow it to evaporate away harmlessly. It takes longer to apply and set than cement, requiring careful tending by the plasterer, which pushes the labour cost up.

Pebbledash is a durable coating created by applying a wet cement base coat and throwing small washed stones or gravel at the wall while it is still wet. It is incredibly hard wearing and protects poor quality brickwork well. It has a dated appearance and is very difficult to patch if it gets damaged, as new stones rarely match the weathered colour of the old ones.

Monocouche is a French term meaning single coat. It is a thick cement-based powder that comes in bags already mixed with colour. The plasterer mixes it with water, pumps or trowels it onto the wall in one thick layer, and leaves it to partially set. The next day, they use a special nail float to scrape the top surface away. This exposes the aggregate and leaves a crisp, pitted texture. Because the colour runs all the way through, it does not need painting.

Thin coat acrylic systems use a base coat with a fibreglass mesh sunk into it to prevent cracking. A primer is painted on, followed by a thin acrylic top coat. Acrylic is highly flexible and resists cracking, but it is less breathable than silicone or lime. It keeps rain out, but moisture inside the wall escapes more slowly.

Silicone render is another thin coat system applied over a flexible base coat and mesh. It is highly water repellent while allowing water vapour to pass through. Rainwater beads up on the surface and washes dirt away, making it very low maintenance. It is flexible, crack resistant, and comes in hundreds of colours.

K Rend is a brand name often used loosely by tradespeople when they mean silicone render. K Rend is a manufacturer of silicone through-coloured renders based in Northern Ireland. It is not a distinct type of render itself, but a brand of materials that plasterers buy and apply.

How much rendering a house costs

Plasterers price rendering work based on the area in square metres, the cost of the materials, and the time the job will take. Labour typically costs between £130 and £250 per day, with rates higher in London and the South East. To understand how much a plasterer costs for your specific project, you need to consider both the material price and the size of your house.

The table below shows typical guide prices per square metre. The cement, lime, pebbledash and acrylic figures are for the render materials alone. The silicone figure and the top of the monocouche range are installed prices that include labour. None of them include scaffolding or removing old render.

These figures represent typical published prices for 2026, and published guides vary widely. Local quotes will differ based on your property and the plasterer you choose.

For a whole house, the total bill depends heavily on the amount of scaffolding required and the type of render chosen. A bungalow requires minimal scaffolding, keeping costs down. The whole-house figures below sit at the lower end of published prices. A premium silicone system costs more: a typical three-bedroom house is put at about £6,500 for materials and labour plus £2,000 to £2,500 for scaffolding, around £8,500 to £9,000 in total.

These figures are typical published prices for 2026. Taken together, published figures for a typical three-bedroom house run from roughly £4,000 to £9,000 depending on the render type and the scaffolding needed.

What affects the price

No two houses are exactly the same, and plasterers price every job after seeing the site in person. Several factors push the final quote up or down.

• The total area of the external walls measured in square metres.
• How much old render needs hacking off the brickwork before new work can start.
• Whether you need a full scaffolding rig or just simple access towers.
• The state of the underlying brickwork and any structural repairs needed once the wall is exposed.
• Access to the property, including narrow alleys, busy main roads, or the need to bridge scaffolding over a conservatory.
• Regional variations in labour rates across the UK.
• The cost of hiring skips and registered waste carriers to remove heavy rubble.

Do you need planning permission?

In England, outside protected areas, cladding or rendering can be done without applying for planning permission provided the materials are of a similar appearance to those used in the construction of the house. This means if your house is already rendered white, replacing it with a similar white render is usually fine.

The rules change if you live in a protected area. In conservation areas, National Parks, Areas of Outstanding Natural Beauty and the Broads, permission is needed before cladding with render, pebble dash, stone, timber, plastic or tiles. You cannot simply cover original brickwork in these areas without approval.

Listed buildings are strictly protected. They need listed building consent for any significant works, inside or out. Changing the exterior finish of a listed building without consent is a criminal offence. If you live elsewhere in the UK, or if you are unsure about your home's status, you should check with your local council planning department before starting any work.

Building regulations and insulation

Building regulations apply to the structural safety and energy efficiency of your home. If you are just patching a few cracks, the regulations do not usually apply. However, if you are tackling a large area, they can apply. The guidance here is for England.

Where 25 per cent or more of an external wall is re-rendered, re-clad, re-plastered or re-lined internally, the regulations would normally apply and the thermal insulation would normally have to be improved. The exact trigger depends on how much of the wall and of the whole building is being renovated, and the upgrade is only required where it is technically, functionally and economically feasible, so ask your council's building control team before you accept a quote.

In practice, this can mean fixing solid insulation boards to the outside of the masonry before the new render goes over the top. This is known as external wall insulation. It adds significantly to the cost of the job, but it cuts heat loss through the wall. Adding thick insulation boards also means your window sills and roof eaves might need to be extended so the new thicker wall does not swallow them up.

Rendering older and solid walled houses

Houses built before the 1920s usually have solid brick or stone walls with no cavity. These walls were designed to breathe. Moisture from rain and internal living enters the masonry, and the wind and sun draw it back out again.

A modern cement render is incompatible with the construction of most old buildings and can cause or accelerate serious decay. Cement is hard, brittle and impermeable. If you cover a solid wall in cement, moisture can get trapped behind it. If that trapped moisture freezes in winter, it can expand and blow the render off the wall. It can also push damp towards the inside of the house and damage internal plaster and decorations.

Lime-based renders allow old walls to breathe. Conservation bodies advise repairing original lime plaster where possible and replacing it like for like. A lime render acts like a sponge, taking moisture in and letting it evaporate away naturally, keeping the solid wall behind it dry and structurally sound.

How long the job takes

Rendering an entire house causes significant disruption and takes time. The first day is usually spent erecting scaffolding safely around the property. Once the access is secure, the plasterers begin hacking off any old, blown render. This requires heavy breakers, creates a lot of dust, and produces tonnes of rubble that must be cleared away into skips.

Next, the team prepares the walls, masking up windows, doors, and drainpipes with protective plastic film. The application process depends on the material chosen. For a modern thin coat system, they apply a base coat and sink a fibreglass mesh into it. This is left to dry before a primer is painted on. Finally, the coloured top coat is applied. Knowing how long plaster takes to dry internally gives you an idea of the process, but external render is entirely at the mercy of the British weather.

Weather dictates the pace of the job. Frost destroys wet render by freezing the water inside it before it cures. Heavy rain washes fresh render straight off the wall and onto your patio. Extreme heat dries the mixture out too quickly, causing it to crack and fail. Because of this, plasterers often pause work for days at a time if the weather turns bad, meaning a job scheduled for a week can easily stretch into two.

What to check in a rendering quote

Under the Consumer Rights Act 2015, work must be done with reasonable care and skill. If it is not, you can ask for it to be put right or seek a partial or full refund. Citizens Advice suggests getting at least three written quotes, securing a written contract, and paying deposits of no more than 25 per cent.

A quote is a fixed price that the plasterer must stick to. An estimate is a rough guess, so you might end up paying more. Always insist on a fixed, written quote before letting anyone start work.

A professional rendering quote should clearly list the following details.

• A fixed total price for the entire job, rather than a daily rate.
• Whether the cost of erecting and removing scaffolding is included.
• The provision of skips and waste removal for all the old rubble.
• The exact type, brand, and colour of the render being applied.
• Protective measures for your windows, doors, and paving.
• Whether VAT is included in the final figure.

Be extremely wary of cash-only deals with nothing in writing. If a trader carries your waste away, they must be a registered waste carrier, and you can check this register publicly.

Common questions

What is monocouche rendering?

Monocouche is a thick, cement-based render that is applied in a single coat and then scraped back the next day to expose a textured surface. The powder comes pre-mixed with colour, so it does not need painting.

Can you repair render or do you need a new coat?

Small cracks and blown patches can be repaired by hacking off the loose material and applying a fresh patch. However, it is almost impossible to match the exact colour and weathered texture of the surrounding wall, meaning repairs usually remain visible unless the whole wall is painted afterwards.

What is the difference between silicone and acrylic render?

Both are modern, thin-coat systems applied over a flexible mesh base. Acrylic is highly crack-resistant but less breathable. Silicone is water repellent but allows water vapour to pass through, making it a better choice for keeping masonry dry.

How much does rendering cost per square metre?

Published 2026 figures range from £15 to £20 per square metre for sand and cement render materials alone, up to £70 to £90 per square metre for a silicone system including labour. Scaffolding and waste removal are usually extra.

Next steps before you hire

Before you invite plasterers round to price the work, gather the information they will need to give you an accurate fixed quote.

• Check your local council website to see if your home is in a conservation area or is listed.
• Walk around your house and note any obvious cracks or patches of hollow-sounding old render.
• Decide whether you want a traditional finish you can paint, or a low maintenance through-coloured system.
• Ask plasterers to specify exactly which manufacturer and product they intend to use.
• Check that the tradesperson plans to use scaffolding rather than working dangerously from ladders.

A good plasterer will happily explain their process, detail the materials they use, and provide a comprehensive written quote. To start comparing prices and options, you can find a plasterer near you through the local directory.