A novel cutting device useful for cutting asphalt shingles and other roofing products features a blade having a top edge, a bottom edge located on an opposite side of the blade relative to the top edge, and left and right edges; a lower cutting edge adjacent the left or right edge; an upper sharpened edge positioned above the lower cutting edge and adjacent the same edge as the lower cutting edge, wherein the upper sharpened edge and the lower cutting edge are configured for cutting; at least one inner edge emanating from the bottom edge and angled towards the top edge, wherein the inner edge is tangent to the upper sharpened edge; and at least on fin or nodule disposed between the lower cutting edge and the upper sharpened edge, wherein the bottom edge is parallel to and shorter than the top edge.

A porcelain roof tile installing system that comprises a roof tile having a porcelain body provided with an attachment hole; a nail for being inserted into the attachment hole of the roof tile thereby installing the roof tile to a roof structure; a nail gun for pushing the nail into the attachment hole; wherein the nail gun has a centering element configured to be coupled with the attachment hole.

A porcelain roof tile installing system that comprises a roof tile having a porcelain body provided with an attachment hole; a nail for being inserted into the attachment hole of the roof tile thereby installing the roof tile to a roof structure; a nail gun for pushing the nail into the attachment hole; wherein the nail gun has a centering element configured to be coupled with the attachment hole.

The invention relates to a blade assembly for a tool for removing a slate from a roof, the blade assembly comprising: a blade having a length, a width, and a plurality of teeth; and a blade support, the blade being mounted to the blade support; wherein the blade support extends over at least 30% of the width of the blade; and wherein the thickness of the blade support to a first side of the blade is greater than the set of the teeth of the blade. The invention further relates to a blade assembly for a tool for removing a slate from a roof, the blade assembly comprising: a blade having a length, a width, and a plurality of teeth; and a blade support; wherein the blade support extends over a sufficient portion of a first side of the blade such that, in use, the teeth of the blade are prevented from coming into contact with a slate adjacent the first side of the blade assembly. The blade assembly may be included in a saw, further comprising a handle.

The invention relates to a blade assembly for a tool for removing a slate from a roof, the blade assembly comprising: a blade having a length, a width, and a plurality of teeth; and a blade support, the blade being mounted to the blade support; wherein the blade support extends over at least 30% of the width of the blade; and wherein the thickness of the blade support to a first side of the blade is greater than the set of the teeth of the blade. The invention further relates to a blade assembly for a tool for removing a slate from a roof, the blade assembly comprising: a blade having a length, a width, and a plurality of teeth; and a blade support; wherein the blade support extends over a sufficient portion of a first side of the blade such that, in use, the teeth of the blade are prevented from coming into contact with a slate adjacent the first side of the blade assembly. The blade assembly may be included in a saw, further comprising a handle.

A roofing construction tool including a substantially planar stand formed from a compressible material that includes a top surface having a first area, a bottom surface defining a second area larger than the first area, and side walls joining the top surface and bottom surface. The roofing construction tool may further include a high friction layer adjacent the bottom surface and/or at least one weight embedded in the compressible material and having a density greater than a density of the compressible material.

A lightweight composite roofing support system comprises a longitudinally-extending core member comprising a longitudinally-extending first roof contact side comprising a first edge and opposed second edge, a longitudinally-extending second side comprising a second side working surface having a second width and a second length that is greater than the second width, the second side tapering toward the first edge at a first predetermined acute angle, and a longitudinally-extending third side comprising a third side working surface having a third width and a third length that is greater than the third width, the third side tapering toward the second edge at a second predetermined acute angle that is different than the first predetermined acute angle, a first end comprising an integral first recess defining a first handle, and an opposed second end comprising an integral second recess defining a second handle, the core member comprising a wedge-shaped lateral cross-section.

A lightweight composite roofing support system comprises a longitudinally-extending core member comprising a longitudinally-extending first roof contact side comprising a first edge and opposed second edge, a longitudinally-extending second side comprising a second side working surface having a second width and a second length that is greater than the second width, the second side tapering toward the first edge at a first predetermined acute angle, and a longitudinally-extending third side comprising a third side working surface having a third width and a third length that is greater than the third width, the third side tapering toward the second edge at a second predetermined acute angle that is different than the first predetermined acute angle, a first end comprising an integral first recess defining a first handle, and an opposed second end comprising an integral second recess defining a second handle, the core member comprising a wedge-shaped lateral cross-section.

A roof integrated photovoltaic (RIPV) system has a plurality of solar tiles that are mounted to a roof. The tiles may be mounted using a metal batten and hanger system or some other attachment system. Each tile has an electrical edge junction extending reawardly from its top edge. The edge junction is coextensive with or contains the plane of the solar tile and may be slightly thicker than the solar tile. Sockets on opposed ends of the edge junction receive plugs of electrical cables for interconnecting the array of solar tiles together electrically. The edge junctions provide for a low profile installation that mimics the appearance of a traditional roofing tile such as a slate tile. The slightly thicker edge junctions may raise solar tiles of one course above the surfaces of solar tiles of a next lower course to provide ventilation for the RIPV array and to provide accommodating space for system wiring.

A roof integrated photovoltaic (RIPV) system has a plurality of solar tiles that are mounted to a roof. The tiles may be mounted using a metal batten and hanger system or some other attachment system. Each tile has an electrical edge junction extending reawardly from its top edge. The edge junction is coextensive with or contains the plane of the solar tile and may be slightly thicker than the solar tile. Sockets on opposed ends of the edge junction receive plugs of electrical cables for interconnecting the array of solar tiles together electrically. The edge junctions provide for a low profile installation that mimics the appearance of a traditional roofing tile such as a slate tile. The slightly thicker edge junctions may raise solar tiles of one course above the surfaces of solar tiles of a next lower course to provide ventilation for the RIPV array and to provide accommodating space for system wiring.