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Old 01-11-2012, 04:02 PM
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Default Re: Flue has trouble drawing when it's windy.

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Originally Posted by lwood View Post
have to lengthen it cause it does the same thing.
That was going to be one of the suggestions.

Maybe its the lack of space between the flue and the cap that is restricting the flow?
The other thing would be down drafts coming over the top of roofs.
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Last edited by brickie in oz; 01-11-2012 at 04:07 PM.
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Old 01-11-2012, 04:26 PM
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Default Re: Flue has trouble drawing when it's windy.

Thanks brickie, what about the cap? I'm thinking that some kind of perforated metal or screen in the space btw the flue and cap.
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Old 01-11-2012, 04:45 PM
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Default Re: Flue has trouble drawing when it's windy.

If the cap was wider and higher up it would help let the gases out, the surest way to restrict a flue is to have the restriction right at the top.
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Old 01-11-2012, 05:10 PM
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Default Re: Flue has trouble drawing when it's windy.

Agreed, will take of the cap and see what happens.
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Old 01-11-2012, 05:10 PM
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Default Re: Flue has trouble drawing when it's windy.

let me take a pic of the other flue.
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Old 01-11-2012, 06:36 PM
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Default Re: Flue has trouble drawing when it's windy.

About “smoking at startup”:
All things being considered: Chimney height, surrounding roof tops, trees, barometric pressure, and wind speed.

I have yet to fire up a WFO. But as far as fireplaces go, I was taught one thing. Heat the chimney first. My dad would always take a piece of burning "lightered wood" or in some cases a tightly crinkled and rolled newspaper and hold it up as high as possible in the fireplace until he thought there was a sufficient "draw", then and only then, would he light the kindling in the fireplace.

I have deviated from this teaching and smoked up the living room enough times to now believe that this is the way to start a fire.
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Old 01-11-2012, 06:45 PM
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Default Re: Flue has trouble drawing when it's windy.

My father in law swore by that practice too.

I use a blast door to get my oven going, it makes very very little smoke doing it this way and the fire roars into life.
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Old 01-11-2012, 07:04 PM
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Default Re: Flue has trouble drawing when it's windy.

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My father in law swore by that practice too.
I plan on using your "blast door" and damper in my oven, but I am sure that I will never be able to sway you about preheating a chimney due to your pre-existsing "paw-in-law syndrome"
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Last edited by Gulf; 01-11-2012 at 07:08 PM.
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Old 01-11-2012, 07:21 PM
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Default Re: Flue has trouble drawing when it's windy.

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"paw-in-law syndrome"
Funny.....
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Old 01-12-2012, 06:53 PM
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Default Re: Flue has trouble drawing when it's windy.

Seriously now, Ya'll just try it. It won't cost you nuthin. Well maybe 30 to 45 seconds of your time. Hold that flame up high and to the rear of your chimney/flu for about that same amount of time and then slowly lower the flame down and in towards your kindlng (bottom up, top down or what ever floats your boat for a starter pile). If you feel the wind in your face coming from your fireplace/oven entry before you start, you will feel the difference when the flu is drawing. That is the time to light your kindling.

NOTE: This technique did fail me one time on a windy/low barometric night, however. It was the first fire of the winter for our fireplace and I had started early that particular evening with several of my favorite "beverages" and had failed to take the cap off of my chimney. Damn! was she pissed
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