Fireplaces, Heating Stoves, Flues and Chimneys - chimney cap
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dkirk
11-29-08, 12:08 PM
I have been looking at chimney caps for my masonry chimney for the coal stove. I have found out that the cap can 1) help provide more draft and 2) hurt the draft. What is up with this?
marksr
11-29-08, 04:53 PM
I have a coal stove that I mostly burn wood in. I have a 7" flue. The reason I put a cap on mine was because of the occasional gust of wind that would force smoke back down the chimney [just for a second] The cap has prevented that from reoccuring :thumbup:
Coal is pretty dirty and the problem you might run into is plugging up the screen on the sides of the cap. Mine always needs cleaning everytime I clean the chimney. If I was to start burning all coal, I suspect the screen might need cleaning every month, maybe sooner.
To answer your question, I suspect the draft is better when clean but when it gets dirty it will be worse.
Coal is pretty dirty and the problem you might run into is plugging up the screen on the sides of the cap. Mine always needs cleaning everytime I clean the chimney. If I was to start burning all coal, I suspect the screen might need cleaning every month, maybe sooner.
To answer your question, I suspect the draft is better when clean but when it gets dirty it will be worse.