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How to apply sand and cement render to external walls.

If you’re looking to give your home a facelift or to make it more weather-resistant, sand and cement render is a great option. This traditional building technique involves applying a mixture of sand and cement to the exterior walls of your home, creating a smooth and even surface that can be painted.

In this blog, we’ll explore the process of sand and cement rendering for your home.

What is Sand and Cement Rendering?

It is a process of applying a mixture of sand, cement, and water to the exterior walls of a building. The mixture is applied in layers, with each layer being allowed to dry before the next one is added. The final layer is then smoothed over to create a uniform finish. This technique has been used for centuries and is still popular today.

Preparing the Surface

Before the rendering process can begin, the surface of the walls must be properly prepared. This involves cleaning the surface to remove any dirt, debris, or loose material. If there are any cracks or holes, these must be filled with a suitable filler and smoothed over. It’s also important to ensure that the surface is completely dry before rendering begins.

Mixing the Rendering Mixture

The rendering mixture is a combination of sand, cement, and water. The proportions of each component will depend on the desired finish and the texture of the wall being rendered. Typically, the ratio of sand to cement is around 4:1, and water is added as needed to create a workable mixture.

Applying the Rendering Mixture

Once the surface is prepared and the mixture is mixed, the rendering process can begin.

The first layer is applied using a trowel, and it’s important to work quickly to ensure that the layer is even and consistent.

The second layer is added once the first layer has partially dried, usually after a few hours.

The final layer is added once the second layer has dried, and this is smoothed over to create a uniform finish.

Sand and Cement: Finishing the Surface

Once the rendering is complete, the surface can be left as is for a natural finish, or it can be painted to achieve a desired look. It’s important to allow the rendering to dry completely before painting or finishing the surface. The drying time can vary depending on the weather conditions and the thickness of the rendering layers.

Polystyrene Wall Cladding Systems

Polystyrene wall cladding systems have become increasingly popular in recent years due to their energy efficiency.

Here, we will take a closer look at polystyrene wall cladding systems and discuss some of their benefits.

Exterior insulation system that consists of polystyrene foam boards that are attached to the exterior walls of a building. The foam boards are then covered with a layer of reinforced base coat, followed by a layer of textured finish coat. The resulting system provides a durable and weather-resistant exterior finish that helps to insulate the building and reduce energy costs.


Energy Efficiency

Insulating the exterior walls of a building, the system helps to reduce heat loss during the winter months. This means that the building can maintain a more consistent temperature and requires less energy.

Easy Installation

The foam boards can be cut to size and easily attached to the exterior walls.

The base coat and textured finish coat can then be applied to the foam boards using standard construction techniques. This means that the system can be installed quickly and efficiently, reducing construction time and costs.


Polystyrene wall cladding systems are also cost-effective compared to other types of exterior insulation systems. The materials and installation costs are generally lower than those of traditional stucco or brick veneer systems.

Additionally, the energy savings that result from the system can lead to significant long-term cost savings for the building owner.

What is Acrylic Render?

Are you looking for a durable and attractive exterior finish? Acrylic rendering is the best option for exterior finishing. Acrylic render refers to any render that uses acrylic (which is a type pastlic) in the mix. It’s a wet render and is becoming more popular.

Acrylic Rendering has many advantages

  • Great adhesion to all surfaces: Unlike traditional renders that won’t stick, can be applied to a variety of surfaces, including painted masonry, uneven concrete bricks, fibre cement, and plasterboard.
  • Highly flexible and strong: It provides elasticity which allows for absorption, shrinkage, and resists surface cracking. This is particularly useful if you live somewhere where the climate can change dramatically.
  • Simple to apply: Can be rolled, trowelled, or even sprayed onto any surface without mixing.
  • Attractive and versatile. Can create various finishes, e.g. You can choose a smooth finish, just like concrete, or attractively texture.
  • It is extremely fast drying: It takes only a few days for it to dry, instead of taking a month as traditional render. This saves you time. It can also be tinted to match the colour of your wall, so there’s no need for a second coat.
  • A better choice for your home: Allows the material beneath to “breathe”, which allows for a healthier and drier home. It is also resistant to water and won’t succumb to bacteria or fungi.


Sand and cement rendering is a great option for giving your home a fresh look & providing protection against the elements.

Its process may seem surface is properly prepared and achieve the desired finish. its a little bit of patience and attention to detail, you can create a beautiful.

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