Engineered for maximum strength, longevity, and efficiency, Perma-Column precast skirt boards combine the durability of concrete with the economy of post-frame construction. The result is a stronger, stiffer, straightener precast skirt board manufactured to the same dimensions as standard treated skirt boards. The revolutionary hybrid design features a 4-inch concrete base secured to wood with stainless-steel shear studs. Basalt composite rebar that will not rust runs the full length of the precast concrete for added strength and stability.