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ispinwool

ispinwool

Feeling the Heat
Feb 5, 2010
367
Butler County, Pa.
Our wood stove has 2 bends in the pipe. One going out through the wall
and the other outside going up is the chimney.
If the wind blows gently (less than 15 mph) from the West--all is well.
If it blows from any other direction or over 15 mph--I have a smokey room.

Would you:
-install one of those "down draft" chimney caps? (I found Vacu-stack at Northline Express)
-or have the woodstove dealer come and change the pipe to go straight up and out through
the porch roof?
 
how high is your chimney? sounds like the wind is hitting your roof and making the draft act funny...

loon
 
I agree with Loon..........I'd wonder if the height of the chimney is tall enough........

If you have the money, "straight" piping is better.......(imho).......for less locations for build up.

-Soupy1957
 
loon said:
how high is your chimney? sounds like the wind is hitting your roof and making the draft act funny...

loon
Click to expand...

+1 sounds like downdraft
 
Straight up is going to help a lot. How tall is the flue from stove top to cap?
 
I think you want your cap to be several feet higher than the ridge line of your roof. I also would think that a straight run would be better for multiple reasons.
 
Also, on the horizontal run, it can make a big difference in how much raise you have. 1/4" per foot of horizontal is required. 1/2" is better. I've seen folks with level horizontal have big problems with back puffing. Changed it to 1/2" per foot and all problems went away.

EDIT: Also on the height of the chimney; subtract 2-3' per 90 degree bend. You have two so if you chimney height is, say, 14,' then realistically you have only a 8-10' chimney.
 
thanks for the responses folks....i'll get a pipe measurement asap.
(hubby came home with a puppy right after i posted my question and
i've kinda got my hands full! puppy is BUSY!)
 
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