flange. A strip of Flintlastic SBS modified bitumen membrane large enough to extend a min. of 4" from the lead flashing edge (min. 40"x 40") in all directions is applied over the base sheet, with the drain hole cut out.
Drain detail, hot asphalt applications – part B
A min. 30"x 30" lead flashing set in compatible flashing compound is secured next. Over this, the field roof membrane is applied in normal fashion.
Drain detail, hot asphalt applications – part C