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Old 07-07-2011, 09:25 PM   #1
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Moisture on interior chimney wall, need advice


Hello. We have been having a problem with our wall for the past few years, and can't seem to get it resolved. We have an apparent moisture problem on the wall/ceiling in our living room that is right by the chimney. We have had 2 different contractors tell us 2 different things, and both assured that their fixes would solve the problem. So far, that hasn't been the case, and the problem appears to be getting worse. The house was built in 1945 and the walls are plaster. None of the other walls have a problem.

The first contractor said it was a flashing issue around the chimney, so they replaced the flashing and the shingles around that and fashioned a cricket. When we had our HVAC system replaced, that contractor said it could be because the hot water heater wasn't vented properly, so they installed a chimney liner in one of the flues. The flue that is farthest from the wall is the one the hot water heater vents through, the one closest to the wall is non-functioning. I have looked in this flue as best I can, and it appears to be clear from top to bottom. Both flues have chimney caps.

If I can provide any other information that makes diagnosing this easier, feel free to let me know and I will do so.

I am enclosing some pics of the water damage, hopefully some of you guys can help generate some other possible ideas, of which I am sure there are many.
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Moisture on interior chimney wall, need advice-img_9510.jpg   Moisture on interior chimney wall, need advice-img_9511.jpg   Moisture on interior chimney wall, need advice-img_9509.jpg  


Last edited by stock2mal; 07-07-2011 at 09:28 PM.
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Old 07-07-2011, 11:23 PM   #2
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Moisture on interior chimney wall, need advice


need pics from the outside,any windows in the area?

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Old 07-07-2011, 11:25 PM   #3
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Moisture on interior chimney wall, need advice


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need pics from the outside,any windows in the area?

There are 2 windows on that wall, I will take pics of everything tomorrow, outside and in.
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Old 07-08-2011, 01:24 PM   #4
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Moisture on interior chimney wall, need advice


Alright, more pics:
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Moisture on interior chimney wall, need advice-sdc11560.jpg   Moisture on interior chimney wall, need advice-sdc11559.jpg   Moisture on interior chimney wall, need advice-sdc11557.jpg   Moisture on interior chimney wall, need advice-sdc11556.jpg   Moisture on interior chimney wall, need advice-sdc11553.jpg  

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Old 07-08-2011, 03:53 PM   #5
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Moisture on interior chimney wall, need advice


Also, if you can do so safely, take some photos of the Top of the chimney please.

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Old 07-08-2011, 04:33 PM   #6
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Moisture on interior chimney wall, need advice


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Also, if you can do so safely, take some photos of the Top of the chimney please.

Ed

I will try to take some pics tonight, thanks for responding
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Old 07-08-2011, 06:38 PM   #7
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Moisture on interior chimney wall, need advice


Alright, more pics, as requested. I can't get a good shot of the chimney from the roof, hopefully these will suffice.
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Moisture on interior chimney wall, need advice-sdc11577.jpg   Moisture on interior chimney wall, need advice-sdc11576.jpg   Moisture on interior chimney wall, need advice-sdc11575.jpg   Moisture on interior chimney wall, need advice-sdc11574.jpg   Moisture on interior chimney wall, need advice-sdc11573.jpg  

Moisture on interior chimney wall, need advice-sdc11572.jpg  
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Old 07-08-2011, 06:39 PM   #8
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Moisture on interior chimney wall, need advice


and 3 more
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Old 07-08-2011, 07:19 PM   #9
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Moisture on interior chimney wall, need advice


Howdy. I live in the problem house too and wanted to add a few details.
-First the chimney was tuckpointed, top 13 or so rows re-built, new chimney cap (or crown? the cement thing at top) was added and whole chimney was sealed. This was supposed to fix it, but did not.
-Then the roof and flashing fix as described above.
-Some flashing was also added behind gutter, just in case.
-Then, when a new furnace/AC was installed, a chimney liner was installed and both the new furnace and hot water heater were directly vented outside, whereas before they vented into the unlined chimney.
-After this was done the interior damage was fixed and repainted and it stayed normal looking for over a year, until this spring when moisture showed up again and continues to get worse. Gutters are cleaned frequently.

I'd love suggestions as to who to turn to professionally for a fix, because everyone who sees it says something else and it keeps reappearing. In addition to 3 roofers (none who agreed of course), chimney guys, and HVAC people, two all-around handy men have taken a look and suggested things, we do them, but it returns. I'm beyond frustrated.

Thanks in advance for any input!!
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Old 07-09-2011, 06:57 AM   #10
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Moisture on interior chimney wall, need advice


I see multiple issues and any one or all can be causing this and the fact that your roof has no overhang doesn’t help.

What your contractor is calling a cricket isn’t what I conceder to be one. If I was doing it the cricket and flashing details would have looked like this.
http://www.google.com/imgres?imgurl=...w=1154&bih=715 With the exception of instead of using roll roofing as pictured I would have used matching shingles.

The white flashing in the picture is called counter flashing and the top edge of it is installed into a groove cut into the chimney. The lower edge is covering the step flashing, which is not visable. http://www.google.com/imgres?imgurl=...w=1154&bih=715

The next issue is with the siding terminating into the chimney. Currently the siding just butts into it and your relying on the caulking to keep water out. That area needs to be flashed too. There should be metal behind the siding and out the chimney protecting that corner and then the siding butts into that flashing.

If all flashing is installed properly the siding flashing and the roof flashing would be integrated together so there is continues protection of that intersection from the roof and down the wall.

This is especially important in your situation if you combine the facts that you have no overhang and the gutter pitched toward the chimney. That’s a lot of water in that corner during heavy rains.

I think the issue may be that the gutter/downspout is backing up and water is getting up under the flashing and running down the wall.

I’d remove the gutter, have it pitched the other way and have all of the siding and roofing flashing details reworked.

You need someone that’s well versed in both roofing and siding.

You also have some mortar that need attention.

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Last edited by kwikfishron; 07-09-2011 at 07:20 AM.
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