1/2" High Density Polyiso Cover Boards

  • New Polyiso / polyisocyanurate cover sheets (Protector).  
  • .5" thick; 4'x8' flat sheets; 44 sheets per bundle. 
  • Closed-cell, rigid foam core with glass-reinforced facers.
  • Long Term Thermal Resistance Value: R2.5
  • High impact & compressive strength (109 psi); protective insulating layer. 
  • Water & mold resistant, yet easy to cut. 
  • Non-load-bearing & not waterproof; moisture barrier recommended. 
  • Made for protective cover board or under waterproof roof membrane.
  • Great for insulating home, office, shed or workshop; residential or commercial.
  • Factory 2nds - NO WARRANTY minor cosmetic & design flaws. 

Pin It Fancy


4'x8' size: 10% OFF on 3 or more whole bundles (44 sheets/bundle).


  • High thermal type; noise absorbing. 
  • 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.


  • PICKUP: *APPOINTMENT REQUIRED* - MATERIAL LOCATED OFF-SITE. completely flat trailer or truck bed is recommended for side-loading bundles with 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 


    Save time, space & aspirin. Sell, consign, or donate your remnant, byproduct, blemished, excess, seconds, obsolete & unwanted material.