PABCO® Gypsum Sheathing

Primary Uses

  • Commercial and residential applications
  • Substrate for exterior cladding such as wood, vinyl, or metal siding, shingles, masonry, brick or stucco
  • Can be used with an Exterior Insulation and Finish System (EIFS)

PABCO® GYPSUM SHEATHING Board is an economical moisture-resistant product and is designed for use as an exterior board providing a stable base for veneer finishing systems on residential and commercial buildings.  PABCO® GYPSUM SHEATHING board has a water resistant core and water repellent paper.

5/8” Type X is used in commercial and residential applications where fire-rated systems are required. 
Made in the USA

Core Thickness Width Length Edge Weight
Type X
5/8” (15.8 mm) 48” (1219 mm) 8’   (2334 mm)
12’ (3658 mm)
Square 2.3lbs/ft2


Core: Gypsum Core Type Options:
5/8” Type X (UL Core Type: PG-5W)
Paper: 100% recycled content paper on front, back and long edges



ASTM C1396, Federal Specification SS-L-30D Type II



PABCO Gypsum Installation Instructions
Gypsum Association GA-253, GA-254
ASTM C1280


Water Absorption ASTM C473:

≤10% by weight


Surface Burn ASTM E84:

Flame Spread 15
Smoke Developed 0


Combustibility ASTM E136:


See the Gypsum Association Fire and Acoustic Guide GA-600
Underwriters Laboratories, UL fire Resistance Directory Design Number:

Type X (PG-5W) 5/8”


Sustainably manufactured in Las Vegas, NV, and Newark, CA.
LEED and sustainability information: