K-Rend HPX Base Coat is a high-performance preparation render for difficult or unusual substrates requiring superior flexibility and adhesion. Formulated with advanced high polymer technology and fibres, HPX is ideal for lightweight block work and high-suction brick. It is compatible with a wide range of K Rend finishes, including dash, scraped texture, and brick rend, making it a versatile base coat for residential and commercial rendering systems.

Key Features

• Engineered for enhanced flexibility and optimum adhesion on challenging substrates, such as lightweight blocks and high-suction bricks
• Created with fibre reinforcement and high polymer technology to ensure strength, resilience, and long-term performance
• Suitable for various K Rend finishes, including scraped texture, brick rend, and dash render
• Offers a practical solution for demanding surface preparation
• Can be hand-applied with a float or sprayed

Technical Information

• Material Requirement: Approx. 6-9kg per m² at a nominal thickness of 4-6mm
• Thermal Conductivity: P = 50% - 0.35 W/mK | P = 90% - 0.40 W/mK
• Capillary Water Absorption Category: W2
• Quantity: 25kg (Pallet of 40 bags)
• Compressive Strength: CS III
• Curing Time: 24 hours

Application Instructions

• Apply Alkali Resistant Reinforcing Mesh at stress points such as corners, window reveals, and door frames
• A primary coat should be used on the substrate where specified, to ensure better bonding of the base coat
• Straighten using a Darby or straight edge to ensure an even, level surface for the following render layer
• Lightly scratch the surface to create a suitable key for the subsequent finish coat

Approvals

• BS EN 998-1