{"product_id":"20mm-foil-coated-xps450-insulated-overlay-board","title":"20mm Foil Coated XPS450 Insulated Overlay Board","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eTekwarm XPS450 is a foil-faced extruded polystyrene overlay board with Pre-formed pipe channels at 150mm centres for 15mm or 16mm pipe, including returns and turns, designed for installing water underfloor heating over existing floors without the need for screeding or digging up the subfloor. At just 20mm thick it adds minimal floor height, making it a practical and cost-effective solution for retrofit UFH installations in domestic and light commercial properties.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe board is manufactured from high-density XPS with a compressive strength of 450 kPa, giving it the structural integrity needed to support the floor finish and foot traffic above without compression or movement. A pre-bonded 100 micron aluminium foil surface reflects and distributes heat quickly and evenly across the floor, improving system efficiency and reducing warm-up times. Pre-formed channels spaced at 150mm centres accept 15mm or 16mm flexible pipe, with returns and turns built in for a clean, efficient layout.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eInstallation is straightforward. Boards are fixed to a clean, level subfloor using a spray adhesive and can be cut to size with a craft knife or saw. There is no moisture, mess or lengthy drying time associated with screeding, making it well suited to occupied properties or projects where disruption needs to be kept to a minimum. Compatible with a wide range of floor finishes including tiles, laminate, engineered wood, LVT, vinyl and carpet.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eAt 45°C flow temperature, the system delivers up to 97 W\/m² under tiles, 65 W\/m² under laminate and engineered wood, and 51 W\/m² under carpet and vinyl. Each board is 1200 x 600 x 20mm and covers 0.72m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e20mm low-profile board — minimal increase in floor height, ideal for retrofit installations\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePre-formed pipe channels at 150mm centres for 15mm or 16mm pipe, including returns and turns\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e450 kPa compressive strength — robust and stable under all standard floor finishes\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePre-bonded 100 micron aluminium foil surface for fast, even heat distribution\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNo screed required — no moisture, mess or drying time on site\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEasy to cut to size with a craft knife or saw\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCompatible with tiles, laminate, engineered wood, LVT, vinyl and carpet\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSuitable for new build and retrofit installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSize: 1200 x 600 x 20mm; coverage: 0.72m² per board; thermal resistance: 0.035 m²K\/W\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCompressive strength: 450 kPa; foil facing: 100 micron aluminium\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePipe compatibility: 15mm or 16mm flexible low-pressure pipe at 150mm centres\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHeat output at 45°C flow: up to 97 W\/m² under tiles, 65 W\/m² under laminate\/wood, 51 W\/m² under carpet\/vinyl\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFor carpet, vinyl and tile finishes, prime and apply a 5–10mm fibre-reinforced self-levelling screed to fill channels before laying the floor finish\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFor laminate and engineered wood, install as a floating floor directly over the boards using a breathable underlay\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFix boards using spray adhesive; on concrete or porous subfloors, spray both subfloor and board underside\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAlways refer to the Tekwarm XPS450 technical datasheet before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tekwarm","offers":[{"title":"Default Title","offer_id":60147085508942,"sku":"BM012108","price":9.19,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/tekwarm-tekwarm-xps450-ufh-overlay-board-20mm-1200-x-600mm-bm012108-ufh-insulation-1249340973.png?v=1784222415","url":"https:\/\/www.insulationuk.co.uk\/products\/20mm-foil-coated-xps450-insulated-overlay-board","provider":"Insulation UK","version":"1.0","type":"link"}