Rated for structural use by the Engineered Wood Association. Shiplap edges with advanced bead system for easier alignment. Pre-primed for exceptional paint adhesion. Significantly lighter than comparable fiber cement panel. Strong enough to be nailed directly to stud, making additional sheathing unnecessary in many applications. Eliminates need for additional bracing on load-bearing walls. Ideal exterior for homes in areas of high winds or seismic activity. Treated engineered wood stand substrate