thickness,1.0mm - 2.0mm width,50mm - 1000mm length,1.0m - 20.0m color,bright alu, gray alu, red alu, black PE film Flashing Tape is used both in construction maintenance and for emergency repairs. It is used to seal valley gutters (where it is used as a lining even over cracks and holes), to repair gutters and downpipes, for the sealing of joints and projections through roofs (e.g. vents, pipes, ...