Patent ID: 8061100

Claim:
Self supporting roofing plate, a plurality of which are to be fit together for covering a pitched roof having a ridge and eaves, in a manner allowing for a sparse supporting structure of the roof having widely spaced apart rafters without crossing purlins, wherein the roofing plate is made of a sheet of material formed to comprise at least the following four non-interrupted walls: (a) first and second upright walls forming a gap in between and both extending along an entire longitudinal dimension of the plate for self supporting of the plate, wherein, when the roofing plate is mounted on the roof, the first wall is adapted to be closer to the ridge than the second wall, a bottom end of the first wall is configured to contact at least one of the rafters, and a bottom end of the second wall is spaced upwardly from the rafters; (b) a third upright wall, adapted to be oriented parallel to and adjacent the second upright wall of a neighboring similar roofing plate when the roofing plates are mounted on the roof; and c) a fourth wall extending along the entire longitudinal dimension of the plate, leveled with and delimited between the bottom end of the upright second wall and a top end of the upright third wall, and adapted to be facing the sky when the roofing plate is mounted on the roof, wherein the fourth wall has a wavy shape extending all the way from the bottom end of the upright second wall to the top end of the third wall, and wherein a portion of the second wall above its bottom end and a portion of the third wall below its top end are extending continuously along the entire longitudinal dimension of the plate and are free of said wavy shape.