K Rend - Silicone render systems, colours and supplies in the UK
If you are looking for K Rend in the UK, Penguin BM supplies k rend silicone render systems, colours, and matching accessories – with quick availability checks and practical quoting for homeowners and trades. You can collect from our Wembley store or arrange delivery, and we will help you choose the right k rend render system for your substrate, colour, and finish.
K Rend is a modern, silicone-based render system designed for long-lasting, weather-resistant external finishes. At Penguin BM, we supply K Rend materials across the UK, support you with system selection, and provide clear quotes based on your project details. Visit us in Wembley (416 Ealing Rd, London, Wembley HA0 1JQ) for collection, or contact us for delivery options.
Why choose K Rend:
- Durable and weather resistant for UK conditions
- Low maintenance finish that stays looking clean for longer
- Breathable system to help manage moisture on suitable substrates
- Flexible finish to reduce the risk of minor surface cracking
- Wide choice of colours and textures for modern facades
What is k rend?
K-rend is a silicone render system used to protect and finish external walls with a clean, modern look. It is commonly specified for external wall insulation (EWI) builds and facade renovation, where you want a consistent finish, improved weathering performance, and a colour option that suits the property.
Typical uses include:
- New build or refurbished facades
- EWI systems (render over insulation boards as part of a complete build-up)
- External upgrades to tired, uneven, or previously rendered walls (after correct preparation)
K rend systems and where they are used
Silicone render systems
A K Rend silicone render system generally refers to a compatible set of layers (base coat, reinforcement mesh, primers, and silicone finish) designed to work together. These systems are chosen for external walls where you need a robust, breathable finish that stands up well to rain, wind, and temperature changes.
Common applications:
- Render finishes on EWI (for example, on insulation boards with a reinforced base coat)
- Upgrading older rendered facades with a fresh finish (when the substrate is stable and properly prepared)
- Projects where a long-life, low-maintenance exterior finish is a priority
Thin coat finishes
Thin coat finishes are applied in a thinner decorative layer compared to traditional thick renders. They are often selected when you want:
- A consistent texture and colour across the facade
- Faster application and predictable coverage
- A finish that is part of a system approach (particularly with reinforced base coats)
Thin coat can be a better choice when the substrate is prepared correctly and you want a clean, modern result without the bulk of older-style render builds.
| System | Best for | Key benefit |
|---|---|---|
Silicone render system |
Most external facades and exposed elevations |
Weather resistance with a low-maintenance finish |
EWI render build-up |
Insulation boards and full facade upgrades |
Designed as part of a complete insulated facade solution |
Thin coat finish |
Refurb projects and consistent decorative finishes |
Predictable application and consistent texture |
Reinforced base coat + finish |
Areas needing added impact resistance |
Extra strength where the wall is more vulnerable |
Base coat, top coat and thin coat - quick overview
Base coat (the strength layer)
This is the structural layer that helps level the surface and provides the bed for reinforcement. On many external systems (especially EWI), the base coat is applied with reinforcement to improve durability and reduce movement-related issues.
Top coat (the finish you see)
The top coat is the decorative layer that gives the final colour and texture. This is the part most homeowners notice, but it performs best when it sits on the correct, compatible base and primer.
Thin coat (a type of finish approach)
Thin coat describes how the decorative layer is applied (typically thinner than traditional render). It is popular for modern facades and system-led applications where the background has already been properly built up.
What you typically need for a full system
- Reinforcement mesh (for strength and crack resistance)
- Base coat (system layer / bedding coat)
- Primer (to help adhesion and even suction, where specified)
- Finish coat (the chosen texture and colour)
K rend colours and colour charts
Choosing the right colour is often the biggest decision on a render project, especially on street-facing elevations. K-rend offers a wide palette, including modern neutrals and stronger contemporary tones.
For browsing and inspiration, start here:
Practical tips when choosing a colour:
- Consider how the colour will look in shade vs direct sunlight
- Check local planning expectations if you are changing the facade colour significantly
- For larger projects, it can be worth confirming the final shade choice before ordering full quantities
Can you paint over k rend?
Yes – you can paint over k rend, but it is important to use the right type of exterior paint and apply it at the right time.
Painting is usually considered when:
- You want a colour change without re-rendering
- You need to refresh an older facade (after proper cleaning and assessment)
- You are matching an extension or repaired area
Key points:
- The render must be fully cured, clean, and stable before painting
- Use a paint system that is suitable for silicone-based renders and external conditions
- Preparation matters: cleaning, repairing small defects, and priming where needed can make a major difference to the final finish
See paint options and guidance.
Pricing, availability and how to get a quote
K rend pricing depends on the system build-up and the finish you choose. Two projects with the same square meterage can vary in cost depending on what is underneath, how exposed the elevation is, and which accessories are required.
What affects the price most:
- Area (m2) and number of elevations
- Substrate type (existing render, masonry, insulation boards, mixed backgrounds)
- System requirement (standard vs higher reinforcement needs)
- Finish choice (texture, colour, and any primers required)
- Location (delivery distance or collection from Wembley)
To get a fast, accurate quote, send:
- Total m2 (or wall dimensions we can convert to m2)
- Substrate details (what you are rendering onto)
- System type (EWI or refurb render over existing background)
- Chosen colour (or shortlist) from the chart
- Your postcode (delivery or collection)
If you are not sure which materials you need, share a couple of photos of the facade and tell us the background layers you know about – we will guide you to the most suitable base coat, mesh, primer, and finish.
Products using K Rend system
- Reinforces insulation systems
- Increased crack resistance
- Easy to cut and apply
- Highly water-repellent
- UV and dirt resistant
- Long-lasting colour
- High thermal insulation
- Moisture resistant
- Easy to install
FAQs about k rend
Is k rend suitable for external wall insulation (EWI)?
Yes. K rend systems are commonly used as part of EWI build-ups, typically with a reinforced base coat and a compatible finish layer.
What is the difference between k rend silicone render and traditional render?
Can you paint over k rend without problems?
You can, but only with the correct exterior paint and proper preparation. Make sure the surface is fully cured, clean, and stable.
Do I need a base coat for a k rend render system?
In most cases, yes. The base coat forms the key system layer and is often used with reinforcement for strength.
When do I need k rend mesh?
Mesh is typically used to reinforce the base coat, especially on EWI systems or where extra durability is required.
How do I choose the right k rend colour?
Start with the colour chart and narrow it down based on your property style and lighting.
Is white render a good choice in the UK?
White can look excellent, but it may show dirt more readily on exposed elevations. If you want white, check specific options designed for that finish.
How do I clean k rend render?
Cleaning depends on the level and type of soiling. Light dirt can often be removed with gentle exterior cleaning methods, but avoid harsh approaches that may damage the finish. If you are unsure, describe the staining and we will suggest a safe approach.
How long does k rend need to cure before painting?
Curing times vary by product, weather, and substrate. As a rule, ensure the render is fully cured and dry, then follow the paint system guidance for compatibility and application.
Can I use k rend on an old, previously painted wall?
It depends on the condition and adhesion of existing layers. The substrate must be stable, clean, and prepared correctly. If you share photos and what is currently on the wall, we can advise what preparation is needed before applying any K Rend system.
Contact, location and shop
Quick route to availability checks, collection in Wembley, or delivery planning.
- Store location
416 Ealing Rd, London, Wembley HA0 1JQ, United Kingdom
- Shop online