I am looking for advice on a 4 ply BUR repair. One of my plants in Miss. (lots of sun and rain) has developed a substantial leak near the gutter edge of the roof at the flashing. Prior to my involvement, repairs were attempted by mopping in additional plies of felt initially then just flood coating with bitumen which has since alligatored as you would expect. Long story short, the additional plies and flood coat have raised what is supposed to be the lowest point of the roof which has caused ponding about 6’ in from the edge. To remedy this I want to do a tear off of the first 6’ (the old repairs) to re-establish the propper slope but can I effectively tie this back in to the remaining good BUR because of the lapping? I can’t justify a complete tear off seeing as the majority of the roof is in good shape.