{"product_id":"4-in-x-4-ft-x-8-ft-green-xps-foam-board-insulation-gf4","title":"4 in. x 4 ft. x 8 ft. Green XPS Foam Board Insulation","description":"\u003cp\u003eGreen rigid foam board is extruded polystyrene (XPS) insulation, a closed-cell foam plastic panel used wherever a continuous layer of insulation has to sit in or against an assembly. The board is dense enough to handle on a jobsite without crumbling, cuts cleanly with a utility knife and straightedge, and can be scored and snapped to fit around framing, penetrations and footings.\u003c\/p\u003e\n\u003cp\u003eBecause the cell structure is closed, XPS absorbs very little water and holds its insulating value in damp locations, which is why it is the common choice for below-grade and below-slab work where fibrous insulation would not survive. Boards are typically installed in butted courses and held with foam-compatible adhesive, plate fasteners, or simply the weight of the slab or backfill above them, with joints staggered to limit thermal bridging.\u003c\/p\u003e\n\u003cp\u003eThicker boards like this one are used where a single layer has to carry the whole insulating load of the assembly - under a slab pour, against a foundation wall before backfill, or as a continuous exterior layer outboard of the sheathing. As with all foam plastic insulation, interior installations are covered by a finish material rather than left exposed.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eClosed-cell extruded polystyrene (XPS) board - a rigid foam plastic insulation panel\u003c\/li\u003e\n\u003cli\u003eGreen board colour, the usual identifier for this class of XPS insulation\u003c\/li\u003e\n\u003cli\u003eLow water absorption; retains insulating performance in damp and below-grade locations\u003c\/li\u003e\n\u003cli\u003eCuts and shapes with a utility knife, handsaw or hot wire - no special tooling\u003c\/li\u003e\n\u003cli\u003eLightweight and rigid, so a single installer can place full boards and butt them tight\u003c\/li\u003e\n\u003cli\u003eCompatible with foam-board adhesive, plate-and-screw fasteners and furring strips\u003c\/li\u003e\n\u003cli\u003eFull-thickness board suited to single-layer continuous insulation rather than built-up layers\u003c\/li\u003e\n\u003cli\u003eSold by the piece\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnder-slab insulation beneath concrete floor slabs\u003c\/li\u003e\n\u003cli\u003eExterior foundation and basement wall insulation ahead of backfill\u003c\/li\u003e\n\u003cli\u003eInterior basement walls behind furring and finish board\u003c\/li\u003e\n\u003cli\u003eContinuous exterior insulation over wall sheathing\u003c\/li\u003e\n\u003cli\u003ePerimeter and frost-protection insulation at footings and slab edges\u003c\/li\u003e\n\u003cli\u003eInsulated masonry cavity walls\u003c\/li\u003e\n\u003cli\u003eCold-room, freezer and refrigerated slab assemblies\u003c\/li\u003e\n\u003cli\u003eRoof insulation in conventional and protected-membrane assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Rigid foam board insulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Extruded polystyrene (XPS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCell Structure:\u003c\/strong\u003e Closed cell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Green\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e Flat board\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Sale:\u003c\/strong\u003e Each (piece)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSize\u003c\/th\u003e\n\u003ctd\u003e8'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eColor\u003c\/th\u003e\n\u003ctd\u003eGreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ARCH Building Supply","offers":[{"title":"Default Title","offer_id":55048725135699,"sku":"GF4","price":98.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/7743\/4195\/files\/arch-placeholder-coming-soon_e4d2ff3b-6bc7-4b2f-a023-8f2e1d7adaa7.webp?v=1790259802","url":"https:\/\/arch-9365.myshopify.com\/products\/4-in-x-4-ft-x-8-ft-green-xps-foam-board-insulation-gf4","provider":"ARCH","version":"1.0","type":"link"}