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Question DetailsAsked on 4/15/2012

Who to call for water running from roof down furnace chimney (inside and outside) and into house? Roofer? Chimney repair? Furnace repair?

We awoke this morning to rainwater running down both the inside and outside of the metal furnace chimney. It passes up through the ceiling, the attic, and to the roof. I climbed onto the roof, but found no obvious leaks. The cap is firmly in place on top of the chimney. Is this a job for a roofer, a chimney repair person, or an HVAC repair person?

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2 Answers


Chimney repair, or manonry worker, the faster the better.

Good luck

Answered 8 years ago by help1968


OK - if you are able to climb on the roof again, look carefully at the "crown" of the chimney - the domed concrete cap on top. If it is cracked or broken up, either around the chimney liner, of more commonly radially from the liner, then you probably need a mason. However, this usually results in a very small leak that persists and causes mold but rarely has any significant amount of water, because the cracks are usually small.

I presume the cap is not rusted through ?

If you had water running down,, my first guess would be that the flashing or roof jack (as applicable for masonry or metal "fake" chimney. or all-metal chimney, respectively) has lost its seal or rusted through, resulting in roof runoff running down along the chimney. In that event, what you would best call is a roofer. (A roof jack is a domed metal flashing over the hole for the chimney, with a rubber seal around the chimney pipe that fits tight like a domed-up collar. Flashing is sheet metal angle that fastens to the chimney brick or metal and angles in under the shingles, diverting water coming up against the chimney back onto the shingles or flat roof.

If in doubt, a chimney sweep or chimney mason should be able to find the problem area.

Answered 7 years ago by LCD

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