ACFoam-II Polyiso Roof Insulation

Rigid polysio roof insulation faced with non-asphaltic, glass fiber reinforced cellulosic organic felt facers.  ACFoam®-II Polyiso Roof Insulation is available in a variety of thermally efficient and dimensionally stable slopes and thicknesses for use in new and reroofing applications.

  • ASTM C1289 Type II, Class 1, Grade 2 (20 psi) or Grade 3 (25 psi)
  • CAN/ULC-S704, Type 2, Class 3 or Type 3, Class 3
  • Closed-cell polyisocyanurate (polyiso) foam core integrally bonded to non-asphaltic, fiber-reinforced organic felt facers.
  • Refer to Product Data Sheet for long-term thermal resistance (LTTR) values.
  • Flat insulation available in 4ft x 4ft (1220mm x 1220mm) and 4ft x 8ft (1220mm x 2440mm) panels.
  • Tapered insulation available in 4ft x 4ft (1220mm x 1220mm) panels with 1/8" (3mm), 1/4" (6mm) and 1/2" (12mm) per foot slope.
  • Manufactured using CFC-, HCFC- and HFC-free foam blowing technology with zero ozone depletion potential (ODP) and virtually no (negligible) global warming potential (GWP).
  • Contains between 59% and 27.6% recycled content by weight (Atlas Technical Bulletin: TB-2).
  • Typically specified for use in new and re-roofing applications. ACFoam®-II and Tapered ACFoam®-II is used in built-up (BUR), modified bitumen, metal, ballasted single-ply, mechanically attached single-ply and adhered single-ply roofing systems. These roofing systems depend on proper installation for successful performance. Refer to FM Approvals® RoofNav and UL Online Certifications Directory for additional application details.
  • To minimize the effects of thermal bridging, Atlas strongly recommends the use of multiple layers when the total desired or specified R-value requires an insulation thickness greater than 2.7” thick.

Related Documents

PDF LogoACFoam®-II Product Data Sheet

PDF LogoTapered ACFoam®-II Product Data Sheet

PDF LogoACFoam® Polyiso Roof Insulation Guide

PDF Logo ACFoam® Package & Loading Guide

PDF Logo ACFoam® Fastening Pattern Guide

PDF Logo ACFoam® Polyiso Roof Insulation Guide Specification


PDF Logo Atlas Service Policy (Wall & Roof Insulation)