Last Edited By Krjb Donovan
Last Updated: Mar 13, 2014 03:10 PM GMT


Hello, I have a bad downdraft in my wood-burning fireplace chimney, so bad that I need to seal up the glass enclosure in the winter. There's a flue closure that doesn't close tightly, but even if that was repaired I don't believe it would solve the problem. which I've been told is due to the height of the chimney and the cold outside wall. I'm considering making this a gas burning fireplace, which I'm assuming will involve some sealing up of the flue? Will this solve my downdraft problem?  !


You need to solve the problem of negative pressure in your home.

Do NOT install gas logs without solving this issue. If you do, you might have a serious CO problem.

I recommend you contact a local CSIA Certified Chimney Sweep who is trained in solving negative pressure issues to do some on-site diagnosis of your problem and to offer some solutions.

You can find a CSIA Certified Chimney Sweep at


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