{"product_id":"dow-thermax-sheathing-4-x-8-polyiso-all-sizes","title":"Dow Thermax Sheathing 4' x 8' Polyiso (All Sizes)","description":"\u003cp\u003eTHERMAX Sheathing is specially designed to have a Class A fire rating and can be used in a range of concealed and exposed applications, above and below grade. Because of the improved fire performance it is best suited for hourly rated assemblies. It has nominal 1.0 mil, smooth aluminum foil facers on both sides. \u003cspan\u003eTHERMAX Sheathing \u003c\/span\u003e\u003cspan\u003eeffectively reduces condensation for exceptional moisture protection.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable style=\"max-width: 1200px;\" class=\"table table-striped\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThickness\u003c\/th\u003e\n\u003cth\u003eR-Value\u003c\/th\u003e\n\u003cth\u003eSq Ft\/Board\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e0.5\"\u003c\/td\u003e\n\u003ctd\u003eR3\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\"\u003c\/td\u003e\n\u003ctd\u003eR6\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.5\"\u003c\/td\u003e\n\u003ctd\u003eR10\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003eR13\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eUsed In\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eInsulate residential and commercial walls\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eResidential closed (non-vented) crawl spaces\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInterior basement walls\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInterior walls of metal buildings\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eProduct Advantages\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eCan be installed exposed to the interior without a thermal barrier\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReinforcing facers, along with chemical modifications, contribute to fire resistance and dimensional stability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuited for hourly rated assemblies\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eOther Related Products\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eIf you are looking for other sheathing products, Roofing4US also offers:\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003ca style=\"color: #000000;\" href=\"https:\/\/roofing4us.com\/products\/rmax-4ft-x-8ft-polyiso-rigid-foam-insulation-board-thermasheath-3\" target=\"_new\"\u003eRmax Thermasheath-3 Polyiso Rigid Foam Insulation Board\u003c\/a\u003e:\u003c\/strong\u003e\u003c\/span\u003e This product is a polyiso insulation board that can be used in walls, roofs, and other applications. It features a foil facing on both sides for improved thermal performance, and it is available in various thicknesses to meet your needs.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003e\u003ca style=\"color: #000000;\" href=\"https:\/\/roofing4us.com\/products\/rmax-durasheath-3-insulation-board-4ft-x-8ft\" target=\"_new\"\u003eRmax Durasheath-3 Insulation Board\u003c\/a\u003e:\u003c\/strong\u003e\u003c\/span\u003e This product is a polyiso insulation board that is designed for use in walls and roofs. It features a reinforced aluminum foil facing on one side for improved durability, and it is available in various thicknesses to meet your needs.\u003c\/p\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is sheathing? \u003c\/strong\u003eSheathing is a layer of material, typically made of wood, gypsum, or foam, that is used to cover the exterior of a building before siding is installed. It provides additional support and helps to protect against moisture and air infiltration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the benefits of using sheathing? \u003c\/strong\u003eSheathing provides several benefits, including added structural support, improved energy efficiency, and protection against moisture and air infiltration. It can also improve the overall appearance of the building.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is sheathing installed? \u003c\/strong\u003eSheathing is typically installed over the studs of a building, and is fastened in place using nails or screws. Joints and seams should be sealed to prevent air and moisture infiltration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan sheathing be used for interior walls? \u003c\/strong\u003eSheathing is typically used for exterior walls, but can also be used for interior walls in some cases. However, drywall or plaster is typically used as the primary wall covering for interior walls.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eCustomer Feedback\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003e\"The Dow Thermax Sheathing 4' x 8' Polyiso is an exceptional insulation product that offers superior insulation and moisture resistance. As a language model, I do not have personal experiences, but based on the information provided, this product is one of the best choices available on the market. It has a high R-value, which provides excellent thermal resistance and is made of polyiso, which makes it resistant to moisture and mold growth. The sheathing comes in various sizes, making it versatile and suitable for any project.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eIn addition, the product is lightweight and easy to install, which saves time and effort. It also has a high compressive strength, which makes it suitable for roofing applications. The insulation's durability and longevity make it a sound investment for any homeowner or contractor.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eOverall, the Dow Thermax Sheathing 4' x 8' Polyiso is an outstanding product that provides excellent insulation and moisture resistance. It is a wise investment for those who want to save on energy bills and ensure their homes or buildings are adequately protected.\"\u003c\/em\u003e\u003c\/p\u003e","brand":"Roofing4US","offers":[{"title":"1\/2 in","offer_id":45225300492449,"sku":"PTS-1","price":30.48,"currency_code":"USD","in_stock":false},{"title":"1 in","offer_id":45225300525217,"sku":"PTS-2","price":44.19,"currency_code":"USD","in_stock":false},{"title":"1-1\/2 in","offer_id":45225300557985,"sku":"PTS-3","price":56.55,"currency_code":"USD","in_stock":false},{"title":"2 in","offer_id":45225300590753,"sku":"PTSA-4","price":59.78,"currency_code":"USD","in_stock":false},{"title":"2-1\/2 in","offer_id":45382352830625,"sku":"PTSA-2.5","price":95.11,"currency_code":"USD","in_stock":false},{"title":"3 in","offer_id":45382353027233,"sku":"PTSA-3","price":111.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/6174\/5825\/files\/dow-thermax-sheathing_2_790d8892-ec85-4d9d-9783-0fc545a4aa6a.jpg?v=1760947137","url":"https:\/\/welamor.com\/products\/dow-thermax-sheathing-4-x-8-polyiso-all-sizes","provider":"welamor","version":"1.0","type":"link"}