{"product_id":"johns-manville-perlite-fesco-flat-insulation-board-astm-c-728-type-1","title":"Johns Manville Perlite FESCO Flat Insulation Board, ASTM C 728 Type 1","description":"\u003ch1\u003eJohns Manville Perlite FESCO Flat Insulation Board, ASTM C 728 Type 1\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eJM Perlite FESCO Flat Insulation Board is a protective perlite-based cover board and low-thermal insulation board proven to reduce blistering in hot-asphalt roofing applications. It meets ASTM C 728, Type 1 and ships as individual boards in three sizes. Use it under JM roofing membranes or as low-thermal insulation on compatible substrates.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot asphalt friendly:\u003c\/strong\u003e Proven to reduce the tendency for blistering in hot-asphalt applied roofing systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTopLoc coating:\u003c\/strong\u003e Top surface is sealed with a special coating to reduce excessive asphalt absorption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensional stability:\u003c\/strong\u003e Expanded perlite provides good dimensional stability and stable R-value.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire resistant:\u003c\/strong\u003e Expanded perlite composition offers inherent fire resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh recycled content:\u003c\/strong\u003e Reinforcing cellulosic fibers made of recycled newsprint, third-party certified by UL Environment for LEED contributions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeets ASTM C 728:\u003c\/strong\u003e Conforms to the requirements of ASTM C 728, Type 1.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eSpecifications Table:\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJohns Manville\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSell unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJM Perlite FESCO Flat Insulation Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e['1.5 in. x 2 ft x 4 ft', '2 in. x 2 ft x 4 ft', '1 in. x 4 ft x 4 ft']\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable colors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e['Brown']\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExpanded perlite, reinforcing cellulosic fibers and selected binders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMeets ASTM C 728, Type 1; recycled content certified by UL Environment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish \/ texture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTopLoc coating on top surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAvailable in 1.5 in. x 2 ft x 4 ft, 2 in. x 2 ft x 4 ft and 1 in. x 4 ft x 4 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProtective cover board or low-thermal insulation board for commercial roofing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecycled content\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCellulosic fibers from recycled newsprint; UL Environment third-party certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch2\u003eCoverage \u0026amp; How Much You Need:\u003c\/h2\u003e\u003cp\u003eEach board covers 8 sq ft (2 ft x 4 ft) or 16 sq ft (4 ft x 4 ft); divide the roof area by the board footprint and allow for cuts and fit around penetrations.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eIntended for use in JM roofing systems as a cover board under membranes or as low-thermal insulation. Attach per the system specification, typically in hot asphalt or with an approved insulation adhesive.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What sizes are available?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The line includes 1.5 in. x 2 ft x 4 ft, 2 in. x 2 ft x 4 ft and 1 in. x 4 ft x 4 ft boards, all in brown.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What is a FESCO board used for?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It serves as a protective cover board or low-thermal insulation board in commercial roofing assemblies.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Why does it resist blistering?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The perlite composition and TopLoc-coated top surface reduce excessive asphalt absorption in hot-asphalt applications.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it contribute to LEED?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, its recycled newsprint content is third-party certified by UL Environment and contributes to LEED Materials.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is it fire resistant?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Expanded perlite provides fire resistance as stated by the manufacturer.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it installed?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Install per the roofing system specification, typically adhered in hot asphalt or with an approved insulation adhesive.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003ePerlite cover boards are a cost-effective choice when a hot-asphalt-applied system needs a blister-resistant substrate, and the TopLoc coating further limits asphalt absorption. Choose the 1.5 in. or 2 in. boards when additional thermal value or a heavier cover board is specified, and the 1 in. x 4 ft x 4 ft board for faster coverage on open decks. Always confirm the board thickness and attachment method against the project's specified roof assembly.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eHandle boards carefully to avoid breakage, and follow hot kettle and asphalt safety practices during installation.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder JM Perlite FESCO Flat Insulation Board for a blister-resistant cover board on your hot-asphalt roofing project.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Johns Manville","offers":[{"title":"1.5\" x 2' x 4'","offer_id":67583426888047,"sku":"JMFF11224","price":10.16,"currency_code":"USD","in_stock":true},{"title":"2\" x 2' x 4'","offer_id":67583426920815,"sku":"JMFF224","price":13.5,"currency_code":"USD","in_stock":true},{"title":"1\" x 4' x 4'","offer_id":67583426953583,"sku":"JM90000698","price":14.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/JMFF11224_0.jpg?v=1790407146","url":"https:\/\/superarbor.io\/products\/johns-manville-perlite-fesco-flat-insulation-board-astm-c-728-type-1","provider":"Super Arbor","version":"1.0","type":"link"}