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Old 08-27-2012, 03:35 PM   #16
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Add Ridge Vent?


I was in the attic while the whole house fan was running and found it wasnt nearly as "windy" as expected. I couldn't even feel it at one end. The air just gets forced out wherever the openings are. I easily could close off two louvers w/o affecting it.

"On paper", adding a ridge vent w/ a few add'l soffit vents would be enough to exhaust the house fan, with the gables permanently closed.

I did find all the soffit louvers at least partially clogged with dust. I removed and washed the low ones, and used compressed air with a 4' wand on the ones too high to remove. It is a tedious job!

The louver blades all face the house, which helps pick up the webs that always collect under the soffit. I guess having the louvers face the house better takes advantage of a high pressure area under the soffit?

Al

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Old 08-27-2012, 03:43 PM   #17
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Originally Posted by AlleyG View Post
I was in the attic while the whole house fan was running and found it wasnt nearly as "windy" as expected. I couldn't even feel it at one end. The air just gets forced out wherever the openings are. I easily could close off two louvers w/o affecting it.

"On paper", adding a ridge vent w/ a few add'l soffit vents would be enough to exhaust the house fan, with the gables permanently closed.

I did find all the soffit louvers at least partially clogged with dust. I removed and washed the low ones, and used compressed air with a 4' wand on the ones too high to remove. It is a tedious job!

The louver blades all face the house, which helps pick up the webs that always collect under the soffit. I guess having the louvers face the house better takes advantage of a high pressure area under the soffit?

Al

It's purely cosmetic. Facing the house looks smoother from the exterior.
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Old 08-28-2012, 01:05 AM   #18
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"The louver blades all face the house, which helps pick up the webs that always collect under the soffit. I guess having the louvers face the house better takes advantage of a high pressure area under the soffit?"---- Yep, the better wind is away from the house, next to the fascia board, less rain, snow, dust; pp. 616: http://books.google.com/books?id=Z8a...0vents&f=false

Double-direction continuous venting, you can't go wrong...LOL. They should face out, as you learned...I didn't know until I read it while researching a few years ago.

Gary

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