Featuring a 1/2" layer of Magnesium Oxide (MgO) sheathing on the exterior and interior sides, DuPont™ ArmorWall™ SP Plus Fire-Rated (FR) Structural Insulated Sheathing (SIS) is a two-hour fire-resistant exterior insulated wall sheathing product, complete with a high-quality air and water-resistive barrier on the exterior.
ArmorWall™ SP Plus FR SIS
DuPont™ ArmorWall™ SP Plus Fire-Rated (FR) Structural Insulated Sheathing (SIS) is an ICC listed, high strength, two-hour fire-resistant exterior wall sheathing product. ArmorWall™ SP Plus FR SIS is unique due to its additional layer of sheathing, made of Magnesium Oxide (MgO), a natural mineral with fire-resistant properties, on the interior face, encompassing the rigid foam insulation. This addition makes ArmorWall™ SP Plus FR SIS a two (2) hour rated assembly, twice that of our standard ArmorWall™ panels. Additionally, ArmorWall™ SP Plus FR SIS offers a factory-applied, air and water-resistive barrier on both the exterior and interior sheathing.. Once seams and fasteners have been sealed the enclosure may be considered “dried-in”, allowing interior construction to commence regardless of final exterior finish status. ArmorWall™ SP Plus FR SIS incorporates five traditional building enclosure elements into a single panel product: structural sheathing, fire-resistance, air barrier, water-resistive barrier, and a high-performance continuous insulation layer. The five-in-one system of ArmorWall™ SP Plus FR SIS can replace several traditional individual components that, on their own, add cost, labor and complexity to a project.
|Air and Water-Resistive Barrier||
|Cladding Attachment Support||
|Install in Harsh Weather||
|Air Leakage Resistance<sup></sup>||ASTM E2357||-||Pass|
|Air Infiltration at 75 Pa<sup></sup>||ASTM E283||-||0.01 cfm/ft2 (0.1 L/s/m2)|
|Air Infiltration at 300 Pa<sup></sup>||ASTM E283||-||0.04 cfm/ft2 (0.2L/s/m2)|
|Water Penetration at 6.27 psf (300 Pa)<sup>1</sup>||ASTM 331||-||Pass|
|Mold and Mildew<sup></sup>||ASTM C1338||-||Pass|
|Fastener Sealability<sup>2</sup>||ASTM D1970||-||Pass|
|Fire Resistance<sup>3</sup>||NFPA 285||-||Pass|
|Vapor Permeance (entire assembly)<sup></sup>||ASTM E96, Procedure A||-||0.5 Perms (grains/hr in Hg ft2)|
|Flame Spread/Smoke Developed Index (facer)<sup></sup>||ASTM E84||-||0 / 0|
|Flame Spread/Smoke Developed Index (insulation)<sup></sup>||ASTM E84||-||10 / 250|
|Thermal Resistance<sup></sup>||ASTM C518||per inch||6.5|
|Foam Compression<sup></sup>||ASTM D1621||psi||30|
|Fastener Withdrawal Capacity<sup>4</sup>||ASTM D17614,5||-||284 lbs|
|Fastener Pull Through<sup>5</sup>||ASTM D17614,5||-||505.2 lbs|
|Fastener Shear in Sheathing Only<sup></sup>||ASTM D17614,5||-||519 lbs|
1Total test duration two continuous hours.
2ArmorWall™ SP Plus FR SIS is self-sealing around cladding attachment fasteners
3ArmorWall™ SP Plus FR SIS passes NFPA 285 attached directly to the stud framing allowing most cladding installed to its exterior as inclusive to the NFPA 285 approved assembly.
4Average ultimate value after thermal cycling (10 cycles) provided
5Fastener data reflects attachment to the panel not attachment to structure.