{"product_id":"products-xps-insulation-boards-underfloor-heating-soundproofing","title":"XPS Insulation Boards | High-Performance Underlay for Flooring, Underfloor Heating \u0026 Soundproofing – 6mm, 10mm, 20mm, 30mm","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoosing the wrong underlay causes problems long after installation day — cold floors, footstep noise carrying between rooms, or flooring that shifts and creaks over time. A flat, dense, well-insulated base underneath is what actually determines how your finished floor performs.\u003c\/p\u003e\n\u003cp\u003eOur XPS insulation boards are built from extruded polystyrene foam, prized for combining strong thermal performance with genuine structural rigidity. With a 300 kPa compressive strength, the boards support high surface loads without compressing or losing shape — so your flooring stays level and stable for years, not just on installation day.\u003c\/p\u003e\n\u003cp\u003eThey're just as effective at cutting noise as they are at retaining heat. With impact sound insulation of up to 20dB, these boards significantly reduce footstep noise transmission — a common source of complaints in flats, upper floors, and multi-room homes. Combined with low water absorption and anti-fungal, mildew-resistant properties, the boards stay stable and hygienic in damp or high-traffic environments, without rotting or breaking down.\u003c\/p\u003e\n\u003cp\u003eAvailable in 6mm, 10mm, 20mm, and 30mm thicknesses, they're equally suited to floor levelling under laminate and solid wood flooring, use as a subfloor underlay under tiles and screed, or upgrading the thermal efficiency of an underfloor heating system. Beyond flooring, the same properties make them a practical choice for wall and ceiling insulation and general soundproofing projects.\u003c\/p\u003e\n\u003cp\u003eInstallation is clean and straightforward — the boards are non-dusting, non-toxic, and odourless, so there's no mess and no fumes, whether you're a tradesperson working across multiple jobs or a homeowner fitting a single room.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 101.786%; height: 58.7814px;\" height=\"29\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 34.274%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"width: 65.3714%;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.274%;\"\u003eProduct type\u003c\/td\u003e\n\u003ctd style=\"width: 65.3714%;\"\u003eXPS insulation board \/ underlay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.274%;\"\u003eCore material\u003c\/td\u003e\n\u003ctd style=\"width: 65.3714%;\"\u003eExtruded Polystyrene (XPS) foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.274%;\"\u003ePanel dimensions\u003c\/td\u003e\n\u003ctd style=\"width: 65.3714%;\"\u003e1200mm x 600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.274%;\"\u003eAvailable thicknesses\u003c\/td\u003e\n\u003ctd style=\"width: 65.3714%;\"\u003e6mm, 10mm, 20mm, 30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.274%;\"\u003eCompressive strength\u003c\/td\u003e\n\u003ctd style=\"width: 65.3714%;\"\u003e300 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.274%;\"\u003eImpact sound insulation\u003c\/td\u003e\n\u003ctd style=\"width: 65.3714%;\"\u003eUp to 20dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.274%;\"\u003eWater absorption\u003c\/td\u003e\n\u003ctd style=\"width: 65.3714%;\"\u003eLow — moisture, mould, and mildew resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.274%;\"\u003eSurface properties\u003c\/td\u003e\n\u003ctd style=\"width: 65.3714%;\"\u003eNon-dusting, non-toxic, odourless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.274%;\"\u003eRecommended uses\u003c\/td\u003e\n\u003ctd style=\"width: 65.3714%;\"\u003eUnderfloor heating, laminate\/solid wood underlay, subfloors, tiles \u0026amp; screed, wall\/ceiling insulation, soundproofing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 34.274%;\"\u003eGuarantee\u003c\/td\u003e\n\u003ctd style=\"width: 65.3714%;\"\u003eLifetime guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eCheck Out Our Recommended Adhesive\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/gb-home.co.uk\/products\/spray-adhesive-quick-dry-ufh-polystyrene-boards-wood-concrete-steel-brick-bond\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0557\/2224\/6221\/files\/Sprayadhesiveclickhere_160x160.png?v=1686148884\"\u003e\u003c\/a\u003e \u003c\/p\u003e","brand":"GB Home","offers":[{"title":"6mm","offer_id":39814976962637,"sku":"NP-Blue-XPS-6mm","price":4.19,"currency_code":"GBP","in_stock":true},{"title":"10mm","offer_id":39814976995405,"sku":"NP-Blue-XPS-10mm","price":5.49,"currency_code":"GBP","in_stock":true},{"title":"20mm","offer_id":39814977028173,"sku":"NP-Blu-XPS-20mm","price":9.99,"currency_code":"GBP","in_stock":true},{"title":"30mm","offer_id":39814977060941,"sku":"NP-Blue-XPS-30mm","price":12.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/2224\/6221\/files\/BlueBundleAI.jpg?v=1683288105","url":"https:\/\/gb-home.co.uk\/products\/products-xps-insulation-boards-underfloor-heating-soundproofing","provider":"GBHOME","version":"1.0","type":"link"}