GreenGuard PB6W Roofing Cover Board

GreenGuard Roofing Cover Board PB6 US

Mechanically-fastened and ballasted EPDM, TPO and PVC single-ply roof membranes.

Kingspan GreenGuard PB6W Roofing Cover Board is an excellent choice for re-roofing with mechanically attached single-ply membranes. The board’s high compressive strength helps to create a smooth surface, even over most gravel surfaced roofs. The extruded polystyrene (XPS) foam core provides high moisture resistance. PB6W can be used under mechanically attached or loose-laid and ballasted single-ply applications. It is both UL and FM approved. The 50′ fanfold bundles are easy to install and lightweight, adding only 1/10 lb. per sq. ft. With 3 lb. density foam and 3-ply facers that do not delaminate, PB6W delivers solid installed performance.

Product Information

Product Type Test Method PB6 PB6 PLUS
Thermal Resistance, R-Value1
ASTM C 518
(@ 75ºF Mean Temperature)
1.5 1.5
Compressive Strength
(psi @ 10% Deflection)
ASTM D 1621 15 20
Water Absorption
(Max % by Volume)
ASTM C 272 0.6 0.6
Water Vapor Permeance
Desiccant Method
0.06 0.06
Fire Characteristics2
Flame Spread
Smoke Developed
ASTM E 84/UL 723 10
(lbs./1,000 sq.ft.)
  105 111
Max Recommended
Use Temp (ºF)
  200 200
Thickness (Nominal) 3/8" 3/8"
Bundle Dimensions 4' x 50' 4' x 50'
Square Feet/Bundle 200 200
Bundles/Pallet 30 30
Square Feet/Pallet 6000 6000
1 Specimens were aged and tested in accordance with FTC Rule (16 CFR, Part 460).
2 These numerical flame spread and smoke ratings are not intended to reflect hazards presented by this material under actual fire conditions. See UL Classification Certificate A184.
GreenGuard PB6W Roofing Cover Board_Product Sheet_US_CA_1704_IMG

GreenGuard PB6W Roofing Cover Board Brochure

GreenGuard Roofing Cover Board Installation Guide

GreenGuard Roofing Cover Board Installation Guide

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Canada - Evaluation Listing CCMC 12722-L - XPS Insulation Board

GreenGuard Siding Underlayment, Sheathing & Roofing Cover Board Safety Data Sheet

GreenGuard Siding Underlayment, Sheathing & Roofing Cover Board Safety Data Sheet

GreenGuard Roofing Cover Board_20 Year Limited Thermal Warranty_US_CA_IMG

GreenGuard Roofing Cover Board 20 Year Limited Thermal Warranty


GreenGuard Roofing Cover Board Contribution to LEED Credits

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Kingspan Insulation North America

Head Office & Sales Office – North America

Kingspan Insulation LLC

2100 Riveredge Parkway, Suite 175

Atlanta, Georgia



Call: +1(800) 241 4402