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Posted by mm on June 9, 2006, 12:13 pm
On Wed, 7 Jun 2006 17:00:36 -0700, "Eigenvector"
>I have heard good and bad things about chimney caps.
>
>What opinions are there about them, the general idea being to keep rain and
>weather out of the chimney.
>
>I have heard that they can alter the draft of the fireplace to make it hard
>to vent a fire.
>I've heard they aren't even necessary
>I've heard they can improve heat loss problems.
>
>Those are just a smattering of takes on the matter. I'd be inclined to
>believe they aren't even necessary but I don't have sufficient experience to
>say yes or no.
I have one on my fireplace chimney and my oil furnace chimney. I
don't have any trouble lighting the fireplace. I roll up some
newspaper, light it, and put it high in the fireplace, so it starts
the draft. (I also use a rectangular cast-iron pan with a porous rock
in it (the two pieces are sold together for this purpose) which I pour
some kerosene on, to make sure it lights.
But when the cap blew off the furnace chimney and I didn't replace it
right away, white crud started coming out of the curved chimney duct
that went from the firebox to the actual chimney. It seems clear the
water was getting in and washing some of the soot in the chimney out
throught the cracks in the pipe. Turning it white somehow. Since I
got a enew cap it doesn't happen anymore.
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