Joint Roof Ridge Cap is the perfect solution for a two-module wide BIPV arrangement without any lower watertight roof membrane. The roof cap plays a critical role in the overall success of this arrangement. Air movement under the cap naturally follows the roof ridge, eliminating the need for a lower watertight roof membrane. Our caps are expertly crafted and designed to meet the highest standards of quality and durability. download free CAD drawing of joint roof ridge section detail.