Abstract: Ventilating material for covering a vent opening in a roof consists of multiple panels that interconnect with each other to condense the venting material for transport by permitting it to be folded into multiple layers. A fastening band extends around all but one of the panels and a second fastening band extends around all of the panels to thereby hold the panels together for transport. After the bundle is placed on the roof of a building structure, the second fastener is released to release the first panel, while the remaining panels remain bundled together by the other fastener. The method of creasing and folding the materials to permit multiple ply corrugated material to be folded to form the bundle of venting material is also disclosed. The folding process may also be used, according to still another aspect of the invention, to make a transport container of multiple ply corrugated material.

Abstract: A ventilating device for a roof having a vent opening includes a cover for a vent opening in the roof. The cover defines vent passages for communicating the vent opening to ambient atmosphere. A moveable member mounted adjacent to the passages is moveable from an open or inactive position permitting communication through the passages to an active or closed position in which the moveable member closes the passage to restrain entry of wind driven rain and or snow into the passages. The moveable members are returned to their inactive or open position by the resiliency of the material from which the moveable members are made and/or by the force of gravity.

Abstract: A ventilated cap system for use on a ridge of a roof which includes an expandable utility cap to seal over a variably expanding metal roof. In one form a top cap may snap lock over the utility cap for slidable attachment thereto when exposed to deforming forces such as snow or ice. The top cap prevents deformation of the underlying utility cap. Roof panel clips permit uneven thermal expansion between metal panel members.