Clark Dietrich Defs Control Joint For 1/2" Board W/ Tape 30/Cs

1/16" Thick Finish, 1/2" Thick Board, 5/8" Perforated Flange, DEFS Control Joint with Removable Tape (30 per Box)

Control joint used for DEFS applications to relieve stress caused by expansion and contraction and control cracking in large areas of walls and ceilings. The removable tape creates a mask over the expansion slot during installation for a clean finish. Large perforations allow the base coat mixture to easily flow through and bond to the substrate. Recommended usage is for every 130-140 Square Foot. with no one side being longer than 15ft. Caulk all intersections, butt joints, ends and corners at the time of installation.