{"product_id":"k-rend-hpx-base-coat-25kg-bag","title":"K-Rend HPX Base Coat 25KG Bag","description":"\u003ch3\u003eK-Rend HPX Base Coat 25KG Bag\u003c\/h3\u003e\n\nK-Rend HPX Base Coat is an ultra-high-performance render designed for professional use on challenging surfaces. Formulated with advanced High Polymer technology and reinforcing fibres, this premium product delivers exceptional flexibility, durability, and adhesion — even on difficult substrates such as lightweight blocks and high-suction bricks.\n\nIt can be applied by hand or machine, ensuring smooth and efficient application across both small-scale and large rendering projects. To further enhance strength and crack resistance, especially around stress points like door and window reveals, it’s recommended to use Alkali Resistant Reinforcing Mesh.\n\nCompatible with a wide range of K Rend finishes — including Dash, Scraped Texture, and Brick Rend — HPX Base Coat provides the perfect foundation for a professional, long-lasting finish that performs in all conditions.\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eHigh Polymer Technology:\u003c\/b\u003e Delivers superior performance with added fibres for difficult substrates.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eOptimum Adhesion:\u003c\/b\u003e Ensures a strong, lasting bond on a variety of surfaces.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eExceptional Flexibility:\u003c\/b\u003e Engineered for high flexibility to accommodate movement on unusual or lightweight substrates.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eVersatile Application:\u003c\/b\u003e Suitable for both hand and machine application.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eProduct Specifications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eApplication Rate:\u003c\/b\u003e Approximately 6–9 kg\/m² at a nominal 4–6 mm thickness.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eClassification:\u003c\/b\u003e Complies with BS EN 998-1 standards.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCompressive Strength:\u003c\/b\u003e CS III.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCapillary Water Absorption:\u003c\/b\u003e Category W2.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThermal Conductivity:\u003c\/b\u003e P=50% – 0.35 W\/mK | P=90% – 0.40 W\/mK.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eApplication Guidelines\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eApply a primary coat where necessary to prepare the substrate, following the specified thickness recommendations.\u003c\/li\u003e \u003cli\u003eEnsure a uniform finish using a Darby or straight edge.\u003c\/li\u003e \u003cli\u003eEstablish a light key to promote strong adhesion for subsequent coats.\u003c\/li\u003e \u003cli\u003eAllow at least 24 hours for curing before applying further layers. For non-standard substrates, seek technical advice from K Rend.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e \u003ch4\u003eWhat types of surfaces can K-Rend HPX Base Coat be used on?\u003c\/h4\u003e K-Rend HPX Base Coat is designed for difficult substrates such as lightweight blocks, high-suction bricks, and other challenging surfaces. Its advanced polymer and fibre formulation ensures excellent adhesion and flexibility. \u003ch4\u003eDo I need to use mesh reinforcement with HPX Base Coat?\u003c\/h4\u003e Yes, it’s strongly advised to use *Alkali Resistant Reinforcing Mesh* around stress points like windows, doors, and corners to prevent cracking and enhance the structural integrity of the render. \u003ch4\u003eWhich K Rend finishes are compatible with HPX Base Coat?\u003c\/h4\u003e HPX Base Coat works seamlessly with multiple K Rend finishes, including Dash, Scraped Texture, and Brick Rend, providing a stable and durable base for professional-quality results.","brand":"JJ Building Materials","offers":[{"title":"Default Title","offer_id":54801995989334,"sku":"162472","price":26.76,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/jjbuildingmaterials.co.uk\/products\/k-rend-hpx-base-coat-25kg-bag","provider":"JJ Building Materials","version":"1.0","type":"link"}