Zipseal Residential Flashing - 0.375" This is a patented one piece Electrical Mast Flashing closed with stainless steel clips designed specifically for shake or shingle roofing. Nothing to "spin" and no plates to screw on or pipe clamps to tighten. Made out of a durable EPDM rubber, the electrical mast flashing has a life expectancy of 20 years if used within a temperature range of -58 degrees F to 239 degrees F. Galvanized mesh reinforced base is strong and rigid.  ...

GoldenSeal Flashing fits pipes up to 3-3/8" we suggest using the factory cutting marks if the roof slope is 27° to 57° (6 on 12 to 18 on 12). For all other slopes a special cut will be required and isntallation by a roofing professional is recommended. The suggestion above is based on product testing with a pipe with 2-3/8" outside diameter extending through an adjustable test roof with plywood decking. Actual results may vary for your particular application. Consult a roofing professional for...