Roof leak around chimney

Old 03-31-04, 05:29 PM
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Unhappy Roof leak around chimney

We just moved into a 40 year house with 7 years old roof. The chimney is enclosed by the screen room added 10 years back.

The inspector, on a dry day, did not notice anything amiss on the roof around the chimney. Now when it rains we see water dripping along the walls of the chimney into the screen room.

The estimate for temporary fix to permanent fix varies from $150 to $1000. Any advice, from people familiar with similar problem, on if we should get a temporary fix or go for the permanent fix?

Thank you.
Old 04-01-04, 11:11 AM
Ed Imeduc's Avatar
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With 7 years on the roof Id go with a temporary fix here . I "think "cause when you do put a new roof on they will have to go down in and do some wood work . Id do it all at one time then ED
Old 04-01-04, 01:26 PM
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Maybe try putting some flashing a round the chimney. Or just coat over the existing flashing with some bull, (roofing tar.) This will hold if done properly for at least another 5 years or more, depending on extreme weather conditions.
Old 04-05-04, 07:32 PM
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Are your chimney flashings embedded into the mortar joints or surface mounted. If surface mounted, the caulk along the top edge of the flashing probably needs replacement. If embedded, you may need your chimney re-pointed. That's what happened to us a few years ago. cost us about $750.
Old 04-06-04, 04:20 AM
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Water around a chimney has a variety of possible entry points. Water can be going into the chimeny from the chimney opening, and soaking through a liner that has cracks in it. The chimney cap may be cracked. The chimney wall pointing may be cracked. The chimney flashing may have pulled away from the chimney. The same flashing may also no longer provide for a proper seal around the base, at the roof. The chimney cricket assembly may be letting in water, if any of the flashings around the cricket are no longer properly sealed. So while the flashing may be the primary suspect, there are plenty of other "players" that should not be ruled out either.

We've also seen apparent leakage that was actually flue gas condensation from a high-efficiency furnace, which produces lower temperatures at the exhaust, and therefore the vapour can condense while it is still in the chimney.

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