Originally Posted By: dhartke
This post was automatically imported from our archived forum.
I find many flashing failures where the plumbing vents and the furnace combustion air vents penetrate the roof. They are mainly Oatey brand and the rubber “boot” part begins to tear in as little as 3-4 years, creating a leak. Many attempt a repair with caulking but of course it is only a Band-Aid as the tear will grow.
Does anyone know of a product or procedure to repair without removing shingles and replacing the entire flashing unit?