1 gallon of #7141 Super Seam Sealer or #7165 Seam Sealer Brush Grade will cover all seams and fasteners on Approx. 200 sq. ft. or 2 roofing squares. #7141 & #7165 Seam Sealer can be brushed or sprayed. #7174 Flashing Cement should be used in conjunction with RH-53 polyester membrane wherever a gap is more than 1/8″ wide and can’t be tightened down with lap screws; Wherever protrusions tie into a roof; and whenever a roof ties into another building.