Irene = water coming down chimney?

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BucksCounty

Feeling the Heat
Jan 11, 2009
286
Southeast PA
I just noticed water leaking down the chimney. I am trying to think where it is coming in. I have never had this problem, but hen again this set up has never been through a hurricane. The water is leaking down the back of the firebox. The install is a Flex King Pro liner to the top with a chimney cap that I siliconed extremely well. Any ideas what is happening? It is not coming down the liner (which I would think should be happening).

This is the set up...
https://www.hearth.com/econtent/index.php/forums/viewthread/60845/
 
Seems like it either has to be coming in at the roof, or down the exterior of the pipe. I'm always amazed at the way water gets past even a good silicone job. Especially when the wind's blowing. Is it a lot of water, or just a bit?
 
Have you been up on the roof as of late to check on that silicone? The average roof should have a walk over 2x per year in my opinion (at the end of winter and in the fall) but I may have a touch of OCD.

It's amazing how 35 or 50 year caulking materials shrink after 2 years in many cases. Just because the caulk may last that long, doesn't mean the seal it is supposed to make will.

pen
 
Mine was rain blowing under the cap and down the inside, and then out the seam at a 45* down to the stove,
 
I got up on Sunday morning and had at least a gallon of water lying in the bottom of the stove. Happened one other time in the Spring, just not nearly as bad. No water on top or underneath the stove, just coming down the inside of the flue. After I bailed out all the water, I put a towel and a bucket in there to catch any more. Sunday night after it had dried out for a while I had a good fire to dry it out some more.
 
I never noticed water till I lined my flue. I think whatever would fall down before would wick into the masonry. Now that I've got a SS liner there's nowhere for the water to go but down. I teed down to a cleanout at the base of the chimney. I can see the water wicking through the bricks at the bottom. When I put my hand in the bottom tee I can feel water at the base inside the liner. Bugs me but I don't know what I can do.
 
2 seasons ago I put a cap on my grandmother's chimney because she had a water problem. First year around that chimney stayed as dry as could be. It's about time to do her pre-season cleaning anyway so I went over today (since my work was closed because of Irene) and did it. Wouldn't you know I pulled about 1/2 gallon of water from the bottom of her chimney.

This is a masonry chimney w/ no cleanout, just drops down about 6 inches below the thimble and ends on a solid block.

Cap's can't prevent everything. When my grandfather was alive he never would use a cap because of fear of them clogging. He burnt 2-3 year seasoned wood and cleaned monthly but was a fireman and had enough calls out because of them not to chance one. He would put a piece of plastic over the top of the chimney then a rock for the summer. When it came time to burn he'd take it off and would let the stove run until it was time to put shorts on, then cover up the chimney again. This worked well until he died and grandma only burns for a few weeks in the winter. The cap is a compromise I suppose.

Irene was a good test for my new cap and SS liner. So far it passed and I'm pleased to say the least.

pen
 
I just streeched a towel over the whole top and ducttaped it where it can still breath, and haven't had any leaks since, I burn 7/24s when its cold so I wont have any moisture then, I guess when wind and rain just right it blows it in, I have looked for a different cap but they all look about the same.
 
I had the same problem but mine was coming in in the front of the fireplace causing spalting on my bricks in my house. There's spalting bricks on the chimney as well. I had cracks in my crown so I had to have it sealed.
 
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