3.0" Polyiso Insulation

  • New polyisocyanurate insulation sheets in original packaging.
  • Factory 2nds; virtually identical in performance and installation.
  • 3" thick, 4'x8' flat (non-tapered) sheets; 16 sheets per bundle.
  • Closed-cell, rigid foam core with glass-reinforced facers.
  • Long Term Thermal Resistance Value: R17.
  • Resistant to indentation and crushing, yet easy to cut.
  • Non-load-bearing & not waterproof; moisture barrier recommended. 
  • Intended for roofing applications; may be used elsewhere (ignition barrier required for interior installation).
  • Perfect for insulating a home, office, shed or workshop, and suitable for residential and commercial applications.
  • May have minor cosmetic flaws (i.e. discoloration/fading) or small packaging defects.

Pin It Fancy


4'X4' Size: 10% off on 6 or more whole bundles (15-16 sheets/bundle). 


  • High thermal type; noise absorbing; 25 PSI. 
  • Compatible with BUR, modified bitumen and single ply membrane systems.
  • Provides high R-value per inch in built-up, modified bitumen, metal roof and single ply roof systems.
  • Utilizes a zero ozone depletion blowing agent that provides high thermal insulation performance.
  • Installation/application via hot asphalt, urethane adhesive, mechanical fasteners or loose laid.
  • May be combined with insulating sheathing to create a higher R-value in exterior walls.
  • Meets the following requirements: CAN/ULC S704, Type 3, Class 3 (170 kPa); ASTM C 1289, Type II, Class 1, Grade 3.


  • PICKUP: *CALL AHEAD* AS MOST MATERIAL IS LOCATED OFF-SITE & REQUIRES AN APPOINTMENT. A completely flat trailer or truck bed is needed for bundles to be side-loaded by forklift. Limited hand-loading provided.
  • DELIVERY: Contact us for details.
  • ADDRESS: 36 W. Fayette Ave. (965 S) #1, SLC, UT 84101.
  • HOURS: Monday - Friday, 9:00 - 6:00. Saturday 9:00 - 4:00 by pre-arranged appointment. 
  • CONTACT: 801-478-6843 x2; info@miscmaterials.com 


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