www.floortrendsmag.com/articles/83253-bonsal-american-adds-protec-backerboard
Bonsal American adds ProTEC Backerboard
December 2, 2002

Bonsal American backerboards
New from Bonsal American is the ProTEC Backerboard. ProTEC is a lightweight, concrete backerboard specifically designed to provide a permanent base for a wide variety of both interior and exterior construction applications. Made of Portland cement, alkaline-resistant fiberglass mesh and lightweight aggregate, ProTEC is engineered as an underlayment for ceramic tile used on walls, ceilings, floors, countertops, and exteriors.