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Can You Apply Silicone Render Over Existing Render? A Comprehensive Guide

Are you tired of your old and worn-out exterior walls? Do you want to give your property a new and refreshing look? If so, then you may have heard about silicone render as a solution to your render woes. But wait, can you apply silicone render over your existing render? That’s a question we often hear, and we’re here to provide you with the answer. In this blog, we’ll explore the possibilities of applying silicone render over existing render and the benefits it can bring.

But before we dive in, let’s have a quick rundown of silicone render and existing render. Silicone render is a popular type of render made from silicone resin and used to cover and protect the external walls of buildings. It has gained popularity due to its excellent properties, such as durability, flexibility, and water-repellent features.

On the other hand, existing render is the layer of material that covers your property’s exterior walls, which may be made from cement, acrylic, or lime. Now, let’s answer the question on everyone’s mind.

What is Silicone Render?

Silicone render is a godsend for homeowners and property managers alike. It’s a type of render that offers exceptional performance and aesthetic benefits. Unlike traditional renders, silicone render is more durable, flexible, and water-repellent. It’s an ideal solution for those looking for a long-lasting and low-maintenance finish for their properties.

In addition to its practical benefits, silicone render also boasts an impressive range of colours and textures. Whether you’re looking for a sleek and modern look or a traditional and rustic feel, there’s a silicone render out there to suit your preferences. Plus, its water-repellent properties make it resistant to algae and fungi growth, keeping your walls looking clean and fresh for longer.

Overall, silicone render is a game-changer in the world of render, providing both practical and aesthetic benefits. So, the question remains: Can you apply it to your existing render? Let’s find out.

Understanding Existing Render

Before we can determine if silicone render can be applied over the existing render, we need to understand what the existing render is and why it may need to be replaced or repaired. The existing render is the layer of material that covers the external walls of a building. It provides a protective layer against the elements and gives the building its aesthetic appearance. However, over time, existing render can deteriorate due to weathering, cracking, and peeling, resulting in a less attractive and less protective finish.

>>Related Reading: Unmasking the Myth: Does Silicone Render Crack?

There are different types of existing render, such as cement, acrylic, and lime. Each type has its unique properties and benefits. Cement render is a popular choice due to its affordability and versatility, while the acrylic render is known for its durability and flexibility. Lime render is a traditional choice that provides a breathable finish, allowing moisture to escape from the walls.

ProGuard Exteriors are your local experts for external wall insulation, exterior wall coatings, coloured render systems, and exterior painting for your home.

ProGuard Exteriors are your first choice for quality local workmanship throughout the South East of England.

Call us today on 0800 612 5254 to arrange a free quote or get in touch for more information on how to protect and transform your home!

What Is Silicone Render
UK Silicone rendering

Can You Apply Silicone Render Over Existing Render?

Now, onto the main question: Can you apply silicone render over existing render? The answer is, it depends. The compatibility of silicone render with existing render depends on several factors, such as the type and condition of the existing render.

Silicone render can be applied over existing render, such as cement render, acrylic render, and lime render, as long as the existing render is in good condition and adequately prepared. It’s essential to clean the surface thoroughly, repair any damage or cracks, and prime the surface before applying silicone render. This will ensure proper adhesion and a long-lasting finish.

However, if the existing render is in poor condition, it may not be suitable for applying silicone render over it. In such cases, removing the existing render and starting fresh with a new layer of silicone render is recommended.

In summary, applying silicone render over existing render is possible, but it depends on the condition of the existing render and proper preparation of the surface. Before starting any rendering work, it’s crucial to assess the condition of the existing render and seek professional advice if unsure.

Now that we’ve answered the main question, let’s move on to the benefits of applying silicone render over existing render.

Benefits of Applying Silicone Render Over Existing Render

There are numerous advantages to applying silicone render over existing renders. Not only does it improve the appearance of the building, but it also enhances the performance and longevity of the existing render. Silicone render is known for its durability, flexibility, and water-repellent properties. These qualities help to provide a protective barrier against weathering, UV rays, algae, and fungi.

In addition to protecting the building from external factors, silicone render also has energy-saving benefits. Its thermal insulation properties can help to reduce heat loss, resulting in lower energy bills and a more comfortable living environment.

Applying silicone render on top of existing render is also a cost-effective solution compared to removing and replacing the entire layer of existing render. It’s an excellent option for those looking to upgrade the appearance and performance of their building without breaking the bank.

Benefits of Applying Silicone Render

Step-by-Step Guide for Applying Silicone Render Over Existing Render

Now that we’ve covered the benefits of applying silicone render, let’s move on to the step-by-step guide for the application process.

Step 1: Preparing the existing render surface

The existing render surface must be clean, dry, and free of any dust, dirt, or debris. Repair any cracks or damages with a suitable filler and allow it to dry completely. Apply a coat of primer to the surface to improve the adhesion of the silicone render.

Step 2: Mixing the silicone render

 Follow the manufacturer’s instructions and mix the silicone render thoroughly. Use clean water and mix the render until it forms a smooth and consistent texture.

Step 3: Applying the silicone render

 Use a trowel to apply the silicone render to the surface. Start from the bottom and work your way up, making sure to spread the render evenly. Use a straight edge to create a level finish.

Step 4: Finishing the silicone render

 Once the silicone render is applied, use a sponge or a plastic float to smooth out the surface and create a uniform texture. Allow the render to dry for the recommended time before applying any finishing touches, such as paint or texture.

Remember to follow the manufacturer’s instructions carefully and choose the right tools for the job. It’s essential to work in a well-ventilated area and wear protective gear, such as gloves and goggles.

Common Challenges and Solutions

While applying silicone render over existing render is a relatively straightforward process, some common challenges may arise. Uneven surfaces, cracks, or colour inconsistencies can affect the final result and require specific solutions.

One of the solutions for dealing with uneven surfaces is to use a basecoat before applying the silicone render. This will create a level surface for the render to adhere to and improve the overall finish. For cracks, it’s essential to fill them with a suitable filler and allow them to dry completely before applying the primer and silicone render. Colour inconsistencies can be addressed using a tinted primer or choosing a colour-matching silicone render.

For complex or large-scale projects, seeking professional advice or hiring experienced contractors is recommended. They have the expertise and equipment necessary to deal with any challenges that may arise and ensure a high-quality finish.

Don’t Replace, Renew: Applying Silicone Render over Existing Render is the Key

Applying silicone render over existing render is a viable option for improving the appearance and performance of a building. It provides numerous benefits, including durability, flexibility, and water-repellent properties, as well as energy-saving benefits. Proper preparation and application are crucial for achieving a successful outcome. It’s important to follow the manufacturer’s instructions, use the right tools, and seek professional advice for complex projects. With these factors in mind, you can enjoy a long-lasting and protective finish for your building.

FAQs


Can you apply silicone render over cement render?

Yes, silicone render is compatible with cement render. However, it’s important to properly prepare the surface, including cleaning and priming, to ensure good adhesion.

Can you apply silicone render over acrylic render?

Yes, silicone render is compatible with acrylic render. Again, proper preparation is essential for good adhesion, including cleaning and priming the surface.

Can you apply silicone render over lime render?

Yes, silicone render is compatible with lime render. However, lime render tends to be more porous than other types of render, so additional preparation may be necessary to ensure good adhesion.

Do you need to remove the existing render before applying silicone render?

No, removing the existing render before applying silicone render is not always necessary. However, the existing render must be in good condition, free of cracks, and properly prepared before applying silicone render.

Can you apply silicone render over painted render?

It’s generally not recommended to apply silicone render over painted render, as the paint may prevent good adhesion. It’s best to remove the paint and prepare the surface properly before applying silicone render.

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