GP is entering the market of combined sheathing and moisture barrier products with the ForceField Air and Water Barrier System. The 7/16-inch-thick panels are laminated with a sheet of moisture barrier material that eliminates the need for housewrap. Specially formulated seam tape seals the system to prevent air infiltration and leaks, and can be applied to the panels at temperatures as low as 0 degrees F without sacrificing adhesion. At a cost of $3 to $4 more per panel than OSB, ForceField is a more expensive option, but the maker says ForceField makes up for the cost by saving installers up to 37% on labor compared with standard sheathing-plus-housewrap installation.