United States Gypsum Co. has introduced Sheetrock Premasked L-Trim, a quick and easy way to protect surfaces adjoining new drywall applications during the gypsum board finishing and decorating processes. This product eliminates time-consuming hand-masking work and ensures a clean, perfectly aligned intersection wherever wallboard meets suspended ceiling grid and other adjoining surfaces. The built-in masking strip, which is attached to a rust-resistant metal L trim, features a serrated border to ensure quick, smooth tear-away following wallboard finishing. Because the trim applies with joint compound instead of mechanical fasteners, nail pops are completely eliminated. The product is offered in standard 8- and 10-foot lengths and is backed by a lifetime warranty against edge cracking. (800) USG-4YOU www.usg.com
