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Question DetailsAsked on 2/3/2017

Recommended roofers in 95124

I have a leak in my roof at the highest gable where a vent pipe is located; needs repair.

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2 Answers


Roofing is the Search the List category for this.

You said vent pipe, not furnace exhaust duct - so I am going to assume a cold pipe penetration situation. If hot, there is no rubber seal - the duct is double-walled up through the roof so any leak would be from rusted ducting, missing/damaged cap, or a failure in the flashing at the roof level.

If a DIY'er - if you can tell if the leak is coming in under/around the roof jack (the metal flashing cone) or coming down the pipe between the pipe and the roof jack, that might give you an opportunity to DIY easily.

Roof jacks commonly look like this - (the metal flashing at the roof surface and the rubber "boot" which fits tightly around the vent pipe).

Sometimes just some asphaltic roof sealant will take care of it (generally works better / longer than silicone caulk) - better is to slip on a repair boot like followong, which commonly fits several different size pipes with pull-out rings to get to the size you need, and slips down over the pipe (after temporarily removing any cap) and slips right over the existing damaged/weathered boot - the old one does not need to come off.

If you need lubrication to slip in down over the pipe, use silicone lubricant spray or coat the inside lip of the boot with a bit of electrical connection and spark plug boot type silicone lubricant.

Answered 3 years ago by LCD



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Answered 3 years ago by Member Services

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