Corner flashing

A corner flashing member for an inclined roof covered with a plurality of adjacent courses of lapped roofing material and an upstanding corner projection above the inclined roof line which comprises a one-piece molded plastics member having a base adapted to be sandwiched between adjacent courses of said roofing material adjacent the corner projection, said base having a notched corner providing a recess, an upstanding portion on the base having a pair of side walls joined at a corner rising from, and forming a continuous junction with, the recess and adapted to overlap the corner of the roof projection when the base is mounted on the roof, and said corner of the upstanding side walls being bendable to overlap either of the side walls for drawing the side walls into abutment with the corner area of the projection, and said overlap adapted to receive a fastener therethrough to anchor the side walls to the projection, whereby said corner flashing prevents leakage between said roof and said corner projection without the use of plastic sealants or adhesives.

A corner flashing member for roof constructions covered with a plurality of adjacent courses of lapped roofing material and having a corner projection above the roof line which comprises a one-piece molded plastics material self-sustaining sheet member having a flat four-sided base adapted to be sandwiched between adjacent courses of said roofing material with two adjacent sides of the base notched out and providing a corner recess, and integral upstanding corner rising from said recess having two flat side walls in angular relation joined at an inner corner inwardly from the periphery of the base to overlie the corner projection when the base is bottomed on the roof, said inner corner being bendable to form a tuck lapping either side wall, and said tuck adapted to receive a fastener therethrough whereby when said base is bottomed on a roof construction to present the side walls of the upstanding corner to the sides of the corner projection the side walls are pulled by the tuck into abutment with the projection and the flashing member will prevent leakage between the roof and corner projection, whereby said corner flashing prevents leakage between said roof and said corner construction without the use of plastic sealants or adhesives.

A corner flashing for use in roof constructions having a roof covered by adjacent courses of lapped roofing material and an upstanding corner construction projecting above the roof, said corner flashing comprising a one-piece impervious member including a generally flat base adapted to be sandwiched between adjacent courses of said lapped roofing material, an upstanding pair of side walls extending generally upwardly from said base to form an upstanding integral corner, said upstanding corner of said corner flashing being adapted to be conformed into abutting relation with the corner construction when said base is sandwiched between said adjacent courses of said lapped roofing material, whereby said corner flashing prevents leakage between said roof and said corner construction without the use of plastic sealants or adhesives.

A method of sealing corners of the sides of roof projections with a roof without the use of plastic sealants or adhesives, said roof having a deck and a lapped shingle roof covering made up of adjacent courses of shingles, which comprises providing a one-piece corner flashing member with a base having a recessed corner portion and upstanding bendable corner walls rising form the recessed portion, inserting the base between adjacent courses of the shingles of the roof covering adjacent the corner of the roof projection, positioning the bendable corner walls to embrace the sides of the corner of the projection, forming a tuck on the bendable corner walls drawing the corner walls into tight engagement with the sides of the corner projection, and lapping flashing strips with the shingles and bendable corner walls into cooperating relation therewith.