Backer Boards & Cement Boards | USG

USG develops innovative building and manufacturing solutions, enabling global customers to efficiently and affordably create sustainable and accessible spaces. USG’s Backer Boards and Cement Boards offer durable, high-performance solutions for a range of design applications. USG boards are engineered to resist spinout and crumbling, ensuring lasting strength and reliability.

Durock® Brand Cement Board with EdgeGuard™
A durable, water-resistant tile backerboard for floors, walls, countertops, and exterior finishes. Engineered with EdgeGuard™it’s optimal for mold-resistant installations in bathrooms, kitchens, and laundry areas. Easy to cut and install with screws, fasteners, or nails.
Thickness (in)	Panel Size	Edge
1/4", 1/2", 5/8" in.	3 ft, 32 in, 4 ft.	Round
Material	Recycled Content	Mold & Mildew Resistance
Portland Cement	14%	Yes

Characteristics

Durock™ Brand Glass-Mat Tile Backerboard
Durock™ Glass-Mat Tile Backerboard is a water-resistant gypsum panel with a fiberglass mat facer, designed as a tile substrate for wet areas on walls, floors, and ceilings. This product is characterized by its lightweight handling combined with cement boards' tile bond strength.
Thickness (in)	Panel Size	Edge
1/2", 5/8"	48 in x 5-10 ft.	Square Edge
Material	Nominal Weight	Mold & Mildew Resistance
Gypsum with Fiberglass Face	1.7 lb./sq. ft.	Yes

Fiberock® Tile Backerboard
Fiberock® Brand Tile Backerboard is a fiber-reinforced gypsum panel with a water-resistant core, providing durable performance in wet and dry environments. These panels are easy to cut and install, and suitable for use under tile, vinyl, or paint.
Thickness (in)	Width	Edge
5/8", 0.42"	3 ft., 4 ft.	Square Edge
Material	Recycled material	Mold & Mildew Resistance
Synthetic gypsum and cellulose fibers	97%	No

Fiberock® Brand Underlayment
Fiberock® Brand Underlayment is a durable, water-resistant substrate designed for hardwood, tile, carpet, and more in residential or light commercial settings. Its composition provides a stable, warp-resistant surface with high-performance tile bonding, making it optimal for wet and dry areas.
Thickness (in)	Width	Edge
3/8", 1/4"	3 ft., 4 ft.	Square Edge
Material	Recycled material	Mold & Mildew Resistance
Synthetic gypsum and cellulose fibers	98%	Yes