12:04PM | 11/21/02
Member Since: 11/20/02
1 lifetime posts
We built a new chimmney from cinder block with a ceramic liner. Every time we burn the wood stove water comes down the chimmney. My wood is dry even if I burn skid wood I still get water. The chimmney was built next to an exsisting chimmney that is used for an oil furnace. Please help!!! all i keep getting is black water coming out my clean out door.


06:56AM | 11/25/02
Member Since: 10/08/02
30 lifetime posts
Any time you burn carbon based fuels, gas, propane, diesel, wood, paper, etc. one of the chief byproducts is water. The fact that the water vapor is condensing indicates that the draft is not strong enough to expel the water while still in vapor form. Ever seen a liquid pour out of the tailpipe of a car. That's water. After the exhaust system heats up a while the water is expelled as an invisible vapor except in exceptionally cold weather when it looks like a thick white fog.

Your chimney is not getting sufficiently warm enough to create a sufficient draft capable of removing the water vapor before it can condense.


07:28AM | 02/27/03
Member Since: 02/26/03
2 lifetime posts
We had the exact same setup and the same problem with our home we built ten years ago.

Our chimmney was creating its own rain cloud.

We completely sealed the exposed cinder blocks with Thouro-seal (sp?) This was a dry material we mixed with water and painted on the blocks.

This prevented moisture from being pulled into the chimmney.

Solved our problem.

Hope this helps

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