How to Render Block or Brick Walls
It might be difficult to decide if you want a brick or render finish. Don't fret, it's a common conundrum for home design enthusiasts!
If you prefer the traditional feel, bricks are a great option. For a more modern approach, renders are more modern. In both cases, you'll have an amazing home! Rendering a wall is the process of adhering a mixture of wet cement and sand to a wall with a trowel. Wall rendering gives a solid cement look and can be used to cover up the current wall material. So if you're thinking of rendering a wall by yourself, follow these procedures below and use the right tools for generating a wall.
Whether you are building from scratch or planning to extend your home, freshening up your home requires many materials, especially if you're doing it yourself. Here are the tools you might need:
- Metal trowel
- Wooden trowel
- Polystyrene float
- Plasterers hawk
- Steel brush
- Soft brush
- Tape measure
- Measuring jug
- Masking tape
- Access to clean water
But before delving into the hows, we need to understand the whys. Rendering isn’t just making the home look pretty. There are many other advantages such as:
- Creating a versatile home: Homeowners choose to render their homes for the look of it. You can choose from a wide variety of colours, finishes, and designs – truly making the home personalised and true to your preferences.
- Prevents dampening: Rendering provides an extra layer of protection to protect the home against damp, which is best for older properties that have solid walls. If the moisture penetrates through the walls, homeowners will be faced with rotting skirting boards, stained plasters, and mould! Be sure that your walls are dry before applying the render though to avoid further problems.
- Improving thermal insulation: The best advantage that rendering does is it provides amazing thermal insulation to improve the performance of the home. Rendering is a great installment an external insulation method for your property that is also cost-effective
Here are the steps to installing block walls yourself!
Before you start rendering your wall, you need to prepare them by cleaning them with a stiff-bristled broom. This will ensure that the surface is free from dust, oil, dirt, paint or grease. And if needed, you can lay some sheets to protect your flooring. Then, continue to use the broom back and forth against the wall until it's clean. You can also add some soap to break up the material.
Furthermore, a smooth, dense surface with low absorption rates should be prepared with a dashing coat before applying the render. A dash coat is a potent mix of cement and water that is flicked over the wall or metal window frames, creating a surface for the render to grip. And before you begin to apply the render, allow the dash coat to dry for at least 24 hours.
In a bucket, add some water and the rendered product according to the manufacturer's instructions and mix it with a mixing drill. Then, continue to mix the render until it's lump-free and stiff enough to stick to a rendering trowel. You need to aim for a toothpaste consistency for the render.
You can use a garden hose to spray the wall down. Then apply the render with a steel trowel, spread it all over the surface. Use a straightedge to check for the level of the render. Then, allow it to cure for at least one day before you apply the paint.
Generally, you only need one coat of render and it should be 4-6 mm thick. You need to apply the render as smooth and flat as possible.
Here are the steps to install brick walls by yourself!
To render course bricks, you need to add some water to the surface before you start. There are two, different techniques to apply the render, you can place the hawk's edge on the wall and then brush up from there, or you can tilt the hawk onto the trowel and apply the render at a 45° angle. If your wall has vents, render up to the vent with a slight overlay around the edges, and then cut away when dry to finish.
Extend the render up towards the top of the wall, and then spread it in one solid motion. Continue to apply the first coat of render to the wall, making the render coats as even as possible.
Let the first layer of render dry for about 30 minutes. Then check the dryness after this time, but expect it to take about two hours to dry completely. Before you lay the second coat, this layer must have adhered to the wall.
Next, you need to float the wall to fill in some small hollows. This will close the surface to make it more durable. Depending on how dry it is, you may need to add a little water as you work.
The last step is to sponge down the render for a smooth and excellent finish. Use a damp sponge for the perfect job. And then, rinse out your sponge as you go to avoid a scratchy finishing.
Do you want to know more about how to render your bricks or block walls? Amaroc is here to help. Contact us through 01793 232930 (Swindon) or 0117 3017474 (Bristol) for more details about our services.