K-Rend Silicone TC15 is a thin-coat decorative topcoat that gives external walls a clean, durable, and flexible finish. It acts as the final layer in silicone render systems. This finish provides the wall with long-lasting colour, strong weather resistance, and good breathability.
K Rend TC15 is a silicone-based topcoat applied as the final render layer in rendering systems. The product creates a 1.5mm fine-textured finish that stays stable in harsh UK weather. It also contains advanced silicone additives that strongly repel water and allow the wall to breathe.
K-Rend TC15 is added to solid masonry, EWI insulation boards, and blockwork.
It helps to:
Using K-Rend top coat TC15 offers several advantages:
The silicone content causes rainwater to run off the surface. This lowers water absorption and reduces the risk of algae growth.
The formulation allows moisture within the wall to escape while still protecting the render system from external moisture penetration.
The compound is tinted through the entire mix, so the colour remains consistent even after wear and UV exposure.
It spreads easily with a trowel and can be floated to an even, uniform finish. This makes it ideal for large façades and areas where consistency matters.
Silicone TC15 is designed to flex with minor building movements, reducing surface cracking over time. This is especially important given the common freeze-thaw cycles in UK weather.
The surface is self-cleaning and sheds dirt to keep walls looking fresh for longer. It does not require regular washing or repainting.
At Insulation Wholesale, we supply genuine K Rend silicone TC15 topcoat in a wide range of colours, ready for immediate site delivery.
Every bucket is:
We also offer competitive trade pricing and fast nationwide delivery to keep your project running smoothly.
Order genuine K-Rend TC15 online for a fast quote, low wholesale prices, and nationwide delivery.
You can buy K-Rend TC15 directly from Insulation Wholesale. We stock the full range of colours and finishes, including standard K Rend TC15 and K-Rend silicone TC15 options. We also provide support with technical data, coverage rates, and colour matching to help you select the right finish for your project.
Applying K-Rend silicone TC15 topcoat involves several steps:
Clean, level, and seal the surface using the recommended primer.
Apply TC15 between 5°C and 25°C for proper curing. Rain, strong sun, and temperatures below 5°C affect the curing process.
Stir the product to evenly distribute the colour.
Spread the coating using a trowel. Aim for a 1.5mm layer.
Rub the surface with a float to smooth the product and achieve a uniform finish.
Wait 24–48 hours for the render to cure undisturbed.
Coverage for Silicone TC15 is typically 8–10 m² per 25kg tub, depending on the smoothness of the substrate, weather conditions during application, coat thickness, and installation technique.
A rougher basecoat uses more material, while a smooth, well-prepared surface provides maximum coverage.
Silicone TC 15 is a ready to use organic resin render which is applied to provide a low maintenance textured finish. It is available in different textures and a wide variety of colours. Prior to application the substrate should be primed using Primer TC.