Master Flash roof flashing is a type of roof flashing that is made of EPDM rubber or high-temperature silicone. It is designed to resist weathering from UV rays and the ozone. Master Flash flashing can be used on metal, plastic, tile, and rubber membrane roofing surfaces. Master Flash flashing is easy to install. It comes in a one-piece construction that can be easily customized to fit the pipe size and location. The flashing is installed by sliding it over the pipe and then securing it to the roof with sheet metal screws.