GreenGuard Plygood Ultra Sheathing

GreenGuard SLX Sheathing

For Use as Non-Structural Insulating Wall Sheathing

Kingspan GreenGuard Plygood Ultra is an extra strong extruded polystyrene (XPS) sheathing that makes homes more energy efficient. It offers superior insulation with four times the R-Value of 7/16” OSB. With low moisture absorption and a perm rating greater than 1, it won’t swell or warp and is not subject to moisture-related damage and deterioration. A reinforcing scrim facer makes Plygood Ultra extra durable and wind resistant up to 110 mph. Yet it’s lightweight and easy to install with staples, roofing nails, or plastic cap nails

Product Information

Property Test Method 3/8"
Thermal Resistance, R-Value1
ASTM C 518
(@ 75ºF Mean
1.5 1.8
Ultimate Load2
(psf, non-corner/corner)
Wind Zone I

Wind Zone II (95/120)
Wind Zone III (115/145)

No Load

No Load
Water Vapor
Permeance Rate (perm)
Procedure A
>1.0 >1.0
Water Absorption
(Max. % by Volume)
ASTM C 272 2.0 2.0
(lbs./1,000 ft.²)
  103 123
Fire Characteristics3
Flame Spread
Smoke Development
ASTM E 84/UL 723


Max. Recommended
Use Temp. (ºF)
  165 165
Board Dimensions 4' x 8' 4' x 8' 4' x 9' 4' x 9'
Nominal Thickness 3/8" 7/16" 3/8" 7/16"
Square Feet/Bundle 576 384 648 432
Bundle/Pallet 12 18 12 18
Square Feet/Pallet 6,912 6,912 7,776 7,776
1 Specimens were aged and tested in accordance with FTC Rule (16 CFR, Part 460).
2 Guide to the H.U.D. Manufactured Home Standards Program. Results are based on tests conducted on walls with specific design criteria. Contact Kingspan Insulation LLC for more information.
3 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 Plygood Ultra Sheathing_Product Sheet_US_CA_IMG

GreenGuard Plygood Ultra Sheathing Product Sheet

GreenGuard Plygood Ultra Sheathing Installation Guide

GreenGuard Plygood Ultra Sheathing Installation Guide

GreenGuard XPS & Sheathing Install Guide WRB

GreenGuard Insulation Board & Insulative Sheathing Installation Guide for WRBs

CCMC 12722-L

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

Do you need assistance planning your project?

Our teams are dedicated to helping make the process as easy as possible and ensure you get the right materials for your needs.

Contact Us

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

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