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How to Make Render Mix: A Comprehensive Guide for UK Homeowners

Updated December 8, 2023
How to Make Render Mix A Comprehensive Guide for UK Homeowners

Welcome to our in-depth guide on how to make render mix, specifically crafted for homeowners in the UK. Rendering is a key aspect of building and renovating homes, providing both aesthetic appeal and protection to exterior walls. This guide will walk you through the process of making the perfect render mix for your property.

Understanding Render

Rendering involves applying a mixture of materials to the exterior walls of a building. The right mix is crucial for the render to hold up against the UK's weather conditions and adhere properly to the wall surface.

Types of Render

  • Cement Render: Traditionally used in the UK, it's made from a mixture of sand, cement, and water.
  • Lime Render: Ideal for older buildings as it's more flexible and breathable.
  • Acrylic Render: A modern option that includes synthetic polymers for enhanced durability and waterproofing.

Step-by-Step Guide to Making Render Mix

Preparing Your Materials

  • Tools Needed: Mixing drill, buckets, trowel, protective gear (gloves, goggles, mask).
  • Materials: Depending on the type of render, you'll need cement, lime, or acrylic render mix, sand, and potentially other additives for improved adhesion or waterproofing.

Mixing the Render

  • Ratio: The most common ratio for cement render is 1 part cement to 4 parts sand. Lime render often follows a 1:3 lime-to-sand ratio. For acrylic render, follow the manufacturer's instructions.
  • Mixing Process: Start by mixing the dry ingredients. Slowly add water until you reach the desired consistency. The mix should be firm enough to hold its shape but not too wet.
  • Testing Consistency: The render should stick to the trowel without sliding off easily.

Applying the Render

  • Apply the render in thin, even layers, using a trowel.
  • Ensure the first layer (scratch coat) is thinner and rough to allow subsequent layers to adhere properly.

Aftercare and Maintenance

  • Allow the render to dry gradually.
  • Avoid rendering in extreme weather conditions.
  • Regularly inspect for cracks or damage.


Making the right render mix is essential for effective and long-lasting results. By following these steps and understanding the properties of different render types, UK homeowners can successfully undertake rendering projects.

FAQs for "How to Make Render Mix"

The most common ratio for cement render is 1 part cement to 4 parts sand. This ratio can be adjusted slightly based on the specific requirements of your project.

It's best to avoid rendering in extreme weather conditions, including heavy rain, strong winds, or freezing temperatures. Ideal conditions are mild and dry weather, to allow the render to cure properly.

The render mix should be moist and hold its shape without being runny. A good test is to see if the mix sticks to a trowel without sliding off easily. Adjust the water content as necessary to achieve this consistency.

A bonding agent is not always necessary, but it can improve adhesion, especially on smooth or non-porous surfaces. It's recommended for surfaces that might have difficulty bonding with the render.

Typically, you should wait at least 24-48 hours before applying a second coat, but this can vary depending on weather conditions and the type of render used. The first coat should be firm and dry to the touch.

Yes, you can add pigments to your render mix to achieve different colors. Ensure the pigment is thoroughly mixed to achieve a consistent color throughout the render.

Each layer of render should be approximately 5-10 mm thick. It's important to apply multiple thin layers rather than one thick layer to prevent cracking.

Always wear protective gear, including gloves, goggles, and a mask, to protect against dust and chemicals. Additionally, ensure the area is well-ventilated when mixing and applying render.

Render can be applied to most surfaces, but the surface needs to be prepared properly. This might include cleaning, priming, or using a bonding agent, depending on the surface material.

Small cracks can be filled with a render repair compound. For larger cracks, it might be necessary to remove a section of the render and reapply. Ensuring proper curing and the right mix can minimize the risk of cracking.


Richard Renderman, your trusted rendering expert at MidRender, is passionate about the art of rendering. With years of experience,he crafts…

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