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Old 11-19-2013, 11:02 AM
 
Location: The Triad
34,091 posts, read 82,498,922 times
Reputation: 43648

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Quote:
Originally Posted by DubyaM View Post
The ridge vent and soffit vent kinda work together I think.
Nope. More often they'll work against each other.

In most instances the INTAKE air comes in from the eaves along the entire length of the house
with gables at the ends... most of that air has to change direction to EXHAUST.
If the intake and exhaust volume are in balance then the smoothest direct path is best.

LINK to pictures
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Old 11-19-2013, 11:51 AM
 
Location: Not far from Fairbanks, AK
20,243 posts, read 36,919,586 times
Reputation: 16373
Quote:
Originally Posted by harry chickpea View Post
FWIW - in northern climes some vents can be a problem. Cold winds blowing snow will blow snow right into gable end vents, especially if there is another vent that acts to lower the air pressure in the attic. If the storm is minor that snowbank inside can evaporate out with no problem, but if it builds up over time or there is a heavy storm it can melt and damage the rooms below. Seen it. Soffit vents limit that problem and also can reduce the issue of ice dams.
The snow must be different in Alaska. All houses have either gable and soffit vents at the eaves, and some have ridge vents in addition of the other two.

When it snows a lot and we have around 2 to 3 or more feet of snow on the roof, there is minimum ventilation on the ridge, so most of the ventilation left is from the eaves to the gables. If this ventilation is not available and we have a warm spell in the middle of the winter, the slightly warmer air in the attic condensates and turns to ice in the attic. Snow does not blow into the attic through the gables.

Last edited by RayinAK; 11-19-2013 at 12:10 PM..
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Old 11-19-2013, 03:31 PM
 
Location: Johns Creek, GA
17,415 posts, read 65,584,777 times
Reputation: 23522
Quote:
Originally Posted by MrRational View Post
Nope. More often they'll work against each other.

In most instances the INTAKE air comes in from the eaves along the entire length of the house
with gables at the ends... most of that air has to change direction to EXHAUST.
If the intake and exhaust volume are in balance then the smoothest direct path is best.

LINK to pictures
You contradicted yourself-
Eaves is the same thing as soffit.

So yes, they "work" together
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Old 11-19-2013, 04:21 PM
 
Location: The Triad
34,091 posts, read 82,498,922 times
Reputation: 43648
Quote:
Originally Posted by K'ledgeBldr View Post
You contradicted yourself-
OP: ridge and **gable** exhaust will often work against each other...

Why KB didn't just say this... I'll never know.

Last edited by MrRational; 11-19-2013 at 04:30 PM..
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Old 11-19-2013, 05:01 PM
 
Location: Johns Creek, GA
17,415 posts, read 65,584,777 times
Reputation: 23522
You Quoted_
Quote:
Originally Posted by DubyaM View Post
The ridge vent and soffit vent kinda work together I think.
Then you stated-
Quote:
Originally Posted by MrRational View Post
Nope. More often they'll work against each other.
So there! I said "it"! Actually I didn't say anything. You contradicted yourself, then misquoted in your response to my post.
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