A two-inch minimum clearance is maintained around the vent pipe through the roof assembly with surrounding wood blocking. A tall cone fitting with counter-flashing rims sits over the penetration. The roof membrane extends upward underneath the counter-flashing rims to ensure a watertight seal.
VENT PIPE 2" MIN. AROUND ALL AROUND MIN CLEAR ALL BLOCKING COUNTER FLASHING RIMS TALL CONE FITTING WITH COUNTER FLASHING RIMS RUN ROOF UP UNDER
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