Cost of Rendering a House
Rendering advice and prices
Rendering is a wall covering method used on external walls to protect the bricks or blocks. The difference between plaster and render is simply that plaster is applied to internal walls, while render is applied to external walls. There are many different styles of render, but the main ingredients are cement, sand, and water. Lime is sometimes added especially when rendering older properties. Different proportions of cement, sand and water are used in rendering and plastering, render has more cement and coarse sand, whereas plaster mixtures use fine sand and less cement for a smoother finish that’s easier to paint and decorate on.
Typical rendering costs
Things to consider
Rendering external walls is labour intensive so already expensive, plus you will require access and safety equipment, usually scaffolding towers, which adds to the overall costs (unless you live in a bungalow). The type of render you choose will also affect price, with anything other than standard render being more expensive, so pebble-dash, for example, will cost extra. A standard rendering job will entail removing any existing render, key and repoint the brickwork, then apply new render in two coats, a sponge finish, then usually masonry paint will be applied to prevent moisture penetration and extend the lifespan of the render.
The price will differ depending on where you live in the UK, regional price variations can be huge with jobs in and around London often being twice as expensive as jobs in the North. Lime render has been traditionally applied to walls built out of stone or rubble or low-quality porous bricks. The lime render does not create a moisture barrier like cement render, but rather acts like a sponge and absorbs the water to stop it passing through the walls. This moisture then eventually evaporates from the surface of the lime render when the weather gets warmer. Traditional buildings that have been lime rendered originally, will tend to experience penetrating damp if the lime render is replaced with cement render.
Sand and cement renders are much stronger and harder than lime render and are typically painted. With more focus being put on energy efficiency, external wall insulation is becoming a popular topic as by adding external wall insulation when rendering it is possible to reduce heat loss from the building in cold weather. External insulation takes up no space inside the building and is seen as a popular choice when there are no cavities to fill with insulation. The application is pretty simple, before the render is applied an insulant material is fixed to the wall, then this is rendered over.
Doing it Yourself
Everyone likes to save money and corners can be cut on many jobs, but one place you definitely don’t want to cut corners on is the walls that support your house! If the job isn’t done correctly then the render will fail after a few years and then moisture will start to penetrate the wall causing damp and even structural damage. So if you plan on rendering the walls yourself as a DIY project, then the key doing a good job is in the preparation.
You need to spend time getting the walls keyed correctly by cleaning them thoroughly then scoring lines into the brickwork, then washing off so the surface is clean and free of dust and the new render can adhere correctly. You should avoid rendering on extremely hot days (which shouldn’t be too difficult in the UK) as the heat will cause the cement to dry too quickly and if it dries too fast it will start to crack.
The perfect day to render is a mild and dry day without too much direct sunlight and no rain or frost. When mixing the render the sand needs to be washed first to remove any salts or special plasterers sand should be used. Waterproofer, PVA, plasticiser and some lime should all be mixed in the correct quantities which will depend on the weather and the wall being rendered.
- Render is a sand/cement mix that is applied to external brickwork
- Masonry paint is almost always applied to render to keep out moisture
- Render both protects the brickwork and adds a layer of insulation
- Properties which are two storeys or higher will need scaffolding to apply render
Hiring a Tradesman Checklist
- Always get at least 2 quotes before hiring.
- Never pay the full amount upfront.
- Get the quote in writing.
- For any payment you make, always get a receipt.
- On more expensive jobs, ask for references.
- Check if the tradesman is a member of any trades associations.
- Make sure the tradesman has public liability insurance.
What are Pebble-dash and Roughcast?
What are the Building Regulations with Rendering?
How do you prepare the surfaces for rendering
Should I use a lime based render?
How long will my render last?
I am currently converting a double integral garage in to a garden room. The garage doors have been removed and are being replaced by windows. The areas under the windows need rendering as do areas where bi-fold doors are being fitted at the rear of the property. Not a huge job, but one that could po...
Submitted by Colin
Remove side window, brick up full cable end K-render and internal plaster/skim over a removed window.
Submitted by Dean
I would like a price to wallcrete or similar a wall that runs all around my property in Elburton Road, Plymouth.
Submitted by Jim
Just need to fill the cavity in the outside walls of the flat.
Submitted by Muhammad
All I need is some old render hacking off. Most of it is already done. It's a day's works. We have a skip and there may be other work too. But the render is the main job now. We are near Belchamps Scouts place. Mount Bowers.