This invention, in embodiments, relates to a roofing system comprising (a) a roofing substrate having a roofing surface, (b) a first roofing tile overlying the roofing surface, the first roofing tile having a front surface, a back surface, a top edge, and a bottom edge, and (c) a second roofing tile overlying the first roofing tile, the second roofing tile having a front surface, a back surface, a top edge, and a bottom edge. At least one sealant line is applied to (i) the back surface of the second roofing tile in an area that overlays the first roofing tile, (ii) the front surface of the first roofing tile in an area in which the second roofing tile overlays the first roofing tile, or (iii) both (i) and (ii). The at least one sealant line is configured to adhere the second roofing tile to the first roofing tile.

Roofing shingles are disclosed that are capable of self-adhering to a roof deck or underlayment and/or other roofing shingles and that require few or no mechanical fasteners to remain attached to the roof. By appropriate positioning of sealant lines on the shingle, direct adhesion between the shingle and the roof deck or underlayment and/or other roofing shingles can be achieved. If the shingle is laminated, the layers may be mechanically attached with indentations in the common bond area. The nail zone of the shingle may be visually indicated with fines and/or one or more paint lines. A roofing system comprising a plurality of courses of the shingles is also disclosed.

A system including a plurality of photovoltaic shingles installed on a roof deck, a plurality of roofing shingles, such as asphalt shingles, installed on the roof deck, and a plurality of step flaps. One end of the roofing shingle overlays a first side of a corresponding one of the step flaps, and one end of photovoltaic shingle overlays a second side of the corresponding one of the step flaps.

A shingle comprises an overlay, an underlay, and a height increasing material disposed between the overlay and the underlay. The height increasing material includes a first adhesive adhered to the overlay, height increasing granules adhered to the first adhesive, and a second adhesive adhered to the height increasing granules and the underlay. The height increasing material can extend along front ends of tab portions of the overlay, along front cutout edges that extend between tab portions of the overlay, or both.

This invention, in embodiments, relates to a roofing system comprising (a) a roofing substrate having a roofing surface, (b) a first roofing tile overlying the roofing surface, the first roofing tile having a front surface, a back surface, a top edge, and a bottom edge, and (c) a second roofing tile overlying the first roofing tile, the second roofing tile having a front surface, a back surface, a top edge, and a bottom edge. At least one sealant line is applied to (i) the back surface of the second roofing tile in an area that overlays the first roofing tile, (ii) the front surface of the first roofing tile in an area in which the second roofing tile overlays the first roofing tile, or (iii) both (i) and (ii). The at least one sealant line is configured to adhere the second roofing tile to the first roofing tile.

A shingle comprises an overlay, an underlay, and a height increasing material disposed between the overlay and the underlay. The height increasing material includes a first adhesive adhered to the overlay, height increasing granules adhered to the first adhesive, and a second adhesive adhered to the height increasing granules and the underlay. The height increasing material can extend along front ends of tab portions of the overlay, along front cutout edges that extend between tab portions of the overlay, or both.

Roofing shingles are disclosed that are capable of self-adhering to a roof deck or underlayment and/or other roofing shingles and that require few or no mechanical fasteners to remain attached to the roof. By appropriate positioning of sealant lines on the shingle, direct adhesion between the shingle and the roof deck or underlayment and/or other roofing shingles can be achieved. If the shingle is laminated, the layers may be mechanically attached with indentations in the common bond area. The nail zone of the shingle may be visually indicated with fines and/or one or more paint lines. A roofing system comprising a plurality of courses of the shingles is also disclosed.

Bituminous tile with sealing engagement devices delimiting positioning areas of the anchoring nails including a tile body of the layered type and provided with shaped flaps delimited by separation cuts, wherein the upper face of the tile body is provided with a plurality of sealing engagement devices which are made in such a way as to have an immediately identifiable nailing area which is perimetrically delimited by a sealing engagement area that is made of an adhesive and/or thermally adhesive and/or hot melt material. The sealing engagement area enables the bonding engagement of the corresponding flap of the bituminous tile that in a laid condition is thereby overlapped, also enables a perfect sealing of the insertion area of the anchoring nail.

Roofing shingles are disclosed that are capable of self-adhering to a roof deck or underlayment and/or other roofing shingles and that require few or no mechanical fasteners to remain attached to the roof. By appropriate positioning of sealant lines on the shingle, direct adhesion between the shingle and the roof deck or underlayment and/or other roofing shingles can be achieved. If the shingle is laminated, the layers may be mechanically attached with indentations in the common bond area. The nail zone of the shingle may be visually indicated with fines and/or one or more paint lines. A roofing system comprising a plurality of courses of the shingles is also disclosed.

A fastener-protecting roofing shingle provides a solution for roofing nails or fasteners that become damaged due to weather exposure resulting from damaged roofing shingles. A nailing line is placed above a seamline rather than on or below the seamline, as is conventionally found. By placing the nailing line further from the seamline, which typically borders the exposed and the overlapped sections of a shingle, nails are better-protected from being exposed to the elements, which decreases the chances of failure due to the nail rusting. Due to the shift in the nailing line, a spotted adhesive may be positioned approximately two inches below the nailing line for improved rooftop adherence, and the length of a solid section may be increased. Furthermore, the apparatus directs rainwater straight down the roof. Solid adhesive strips prevent water from pooling or leaking laterally out to the sides and into other layers of shingling.