Latest Discussions : Roofing & Siding

kheng2yu

08:07PM | 12/22/06
Member Since: 10/20/04
1 lifetime posts
I went up to the attic and I found out that the leak was coming from the edges of the roof vent and dripping along the metal pipe into the bathroom exhaust. many times, it would be raining very hard and it would not leak. Occasionally, it would leak even on a light rain with a strong gust of wind. Pls help me to understand what is wrong and how i can resolve this problem. This is only a three year old house.

Piffin

04:05AM | 12/25/06
Member Since: 11/06/02
1278 lifetime posts
Normally up on the roof for this type penetration, the B flue pases through a roof jack with an inverted cone that fits snug to the pipe. Then a collar is fitted on the pipe just an inch approximately above the junction with that cone. sometimes, the collar is too high and wind can blow rain in under it. It should not be too low either, or it can be a problem with thermal expansion and contraction.

The connection between collar and pipe should be caulked with silicone, sometimes this is left off too.

If neither of these, something else is amiss and I would need a photo to see.

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