This Old House general contractor Tom Silva shows how to create a watertight seal around a vent pipe. (See below for a shopping list and tools.)

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Shopping List for How to Fix a Leaking Rooftop Vent Pipe:
– replacement rubber gasket, for installation over existing, leaking gasket
– lap-seal caulk

Tools for How to Fix a Leaking Rooftop Vent Pipe:
– pocketknife
– caulk gun

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