Georgia-Pacific’s newest addition to its ForceField line is a corner seal, for both inside and outside corners, that bends along a center channel. The semi-rigid polypropylene strip is 4 inches wide and 0.03 inch thick, providing coverage for an area that is notoriously difficult to seal, GP says. ForceField Corner Seal is designed for use with ForceField sheathing panels and can be installed directly onto those panels to form an air and water barrier. The corner seal is sold in 200-foot rolls and is available nationwide through building materials dealers.