A Simple Guide to Brick RenderingMarch 31, 2017
Today we came across an article that seemed very useful to our trade and DIY customers: A Guide to Brick Rendering, from the fine folks at HireJungle Blog. They have kindly given permission for us to reproduce bits of it here. Thanks, guys! You’ll find the full article here.
Prepare the Brick
Use a firm brush to remove any dust or debris. Then, brush PVA glue mixed with some water liberally all over the brickwork. Use the brush to get the glue into all of the nooks and crannies of the brickwork.
Choosing the Rendering Mix
Choose one that is suitable for your environment. For example, if you’re in a location that’s particularly wet or windy, you’ll need a specific weather-resistant mix. Choose a render in a colour and texture that matches the existing brickwork and that blends well with the surrounding environment.
Mixing the Render
Follow the packet instructions to mix up the cement. Once well mixed, you can add the water. Before adding the water, add a little water retarder and plasticiser. Add it gradually, being gentle so that the render mix doesn’t splash out of the mixer.
Tips for Applying Rendering
- Use thin layers. Using a layer that is too thick means that the render is likely to fall off the wall, so it’s best that you use multiple thin layers instead.
- Once you’ve applied the render, score the surface of the render in diagonal parallel lines about an inch apart. Leave to dry.
- Once you’ve applied the undercoat and once dry, use a brush to coat the brick and render with another layer of PVA glue. Leave to dry.
- Second, third and even fourth layers should be no thicker than the first layer and should all be scored.
- Once you’ve applied the final coat, use a trowel to ensure that the render is as smooth as possible. Then, use a float to smooth the render further.
- As the final layer of render starts to dry completely, if you see any cracks (this may have been caused by the render shrinking as it dries), spray the render with water and smooth the cracks back with the trowel.