Abstract: A roofing shingle (20) comprises a web (22) having a shingle major dimension (24) and a shingle minor dimension (26). The web (22) in turn comprises a headlap portion (30) and plural tabs (32). The headlap portion (30) extends along a web first edge (34) which is parallel to the shingle major dimension. The plural tabs (32) are formed along a web second edge (36) which is parallel to the web first edge. Adjacent ones of the plural tabs (32) are separated by a cut out (40). The cut out (40) extends in the shingle minor dimension (26). As formed, each of the plural tabs (30) has a greater extent along the shingle minor dimension (26) than along the shingle major dimension (24).

Abstract: A thermally insulative building construction panel (10) comprises a first or bottom sheet (20) of insulation material; a second or top sheet (24) of a rigid nail-anchoring material; and, a plurality of spacer members (22) sandwiched in fixed positions between the first sheet and the second sheet for defining air channels (25) between the sheets and the spacer members. The spacer members (22) are over three inches wide and are at least one-half inch thick. The spacer members (22) are comprised of a plastic foam insulation material selected from the group consisting of polyurethane modified polyisocyanurate foam, phenolic-formaldehyde foam, and polystyrene foam.