K-Rend Silicone TC15

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.

What Is K Rend TC15?

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.

What Is KRend TC15 Used For?

K-Rend TC15 is added to solid masonry, EWI insulation boards, and blockwork.

It helps to:

• Create a uniform 1.5mm textured surface
• Seal the system against rain and wind
• Improve colour stability and the system’s durability
• Reduce maintenance on rendered façades
• Enhance visual appearance on homes, extensions, and commercial buildings

Benefits Of K-Rend Top Coat TC15

Using K-Rend top coat TC15 offers several advantages:

Excellent Water Repellence

The silicone content causes rainwater to run off the surface. This lowers water absorption and reduces the risk of algae growth.

Breathable Yet Weatherproof

The formulation allows moisture within the wall to escape while still protecting the render system from external moisture penetration.

Excellent Long-term Colour Stability

The compound is tinted through the entire mix, so the colour remains consistent even after wear and UV exposure.

Smooth and Even Application

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.

Flexible and Crack-Resistant

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.

Low Maintenance

The surface is self-cleaning and sheds dirt to keep walls looking fresh for longer. It does not require regular washing or repainting.

Why Choose Our Silicone TC15?

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:

• Fresh stock direct from the manufacturer
• Stored correctly to maintain product stability
• Available in single tubs or bulk quantities
• Suitable for contractors, installers, and DIY users
• Supported by clear guidance for mixing, tinting, application, and curing

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.

FAQ

Where to buy K-Rend TC15?

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.

How to use TC15 silicone topcoat

Applying K-Rend silicone TC15 topcoat involves several steps:

• Prep the Surface 

Clean, level, and seal the surface using the recommended primer.

• Check Conditions 

Apply TC15 between 5°C and 25°C for proper curing. Rain, strong sun, and temperatures below 5°C affect the curing process.

• Mix Well 

Stir the product to evenly distribute the colour.

• Apply the Product 

Spread the coating using a trowel. Aim for a 1.5mm layer.

• Float the Surface 

Rub the surface with a float to smooth the product and achieve a uniform finish.

• Let It Cure Naturally 

Wait 24–48 hours for the render to cure undisturbed.

How many m² per TC15 topcoat?

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.