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Old 08-20-2012, 07:00 PM   #1
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Is it suggested: turtle vents with ridge vents???


Recently, I was told that having turtle vents installed with ridge vents is considered good or "over-ventilated".

I just want your opinions about this...

Please share your thoughts and recommendations!

Thank you in advance.

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Old 08-20-2012, 07:05 PM   #2
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Is it suggested: turtle vents with ridge vents???


You only need soffit and a ridge vents.
Looks better and vents the whole roof not just a circle, uses no power and should be 0 maintance if there not a hurricane.

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Old 08-20-2012, 07:07 PM   #3
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Is it suggested: turtle vents with ridge vents???


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Originally Posted by joecaption View Post
You only need soffit and a ridge vents.
Looks better and vents the whole roof not just a circle, uses no power and should be 0 maintance if there not a hurricane.

Is "over venting" accurate?
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Old 08-20-2012, 07:20 PM   #4
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Is it suggested: turtle vents with ridge vents???


Sometimes, ridge vents are not installed correctly and therefore do not work as well as they should. I've seen extra vents added to compensate for this.

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Old 08-20-2012, 08:19 PM   #5
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Is it suggested: turtle vents with ridge vents???


Another problem is if the wind blows into them it can reduce the airflow you have. Most info I have seen is one or the other with soffit vents. Use with ridge, roof, or louvers not any combination the three.
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Old 08-23-2012, 09:07 PM   #6
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Is it suggested: turtle vents with ridge vents???


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Originally Posted by Duckweather View Post
Another problem is if the wind blows into them it can reduce the airflow you have. Most info I have seen is one or the other with soffit vents. Use with ridge, roof, or louvers not any combination the three.
Thanks, guys!

A local builder made the suggestion that by having ridge vent AND 6 turtle vents will be better and over ventilate... Further, he even said that it would be best to over than under ventilate...

I am curious to know of more of your inputs... and opinions...

thanks.
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Old 08-24-2012, 12:01 PM   #7
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Is it suggested: turtle vents with ridge vents???


You don't want more exhaust vents than intake or the condition house air will exhaust to make-up, use a baffled ridge vent; http://books.google.com/books?id=Z8a...0vents&f=false

Air seal the attic first and foremost; http://www.google.com/url?sa=t&sourc...wWATQw&cad=rja

The "stack effect", natural or forced will drive the attic exhaust along the sheathing above; http://www.wag-aic.org/1999/WAG_99_baker.pdf

I would leave the turtles alone, you want enough exhausts but not too many, as said already; http://en.allexperts.com/q/Roofing-1...able-Vents.htm

As long as they are 3' higher than the soffit intake vents, they would function as exhaust vents; http://www.finehomebuilding.com/desi...ble-vents.aspx

The NFVA differs greatly per manufacturer of the ridge vents, be sure to add the turtles as exhaust when figuring your percentage split; http://www.airvent.com/homeowner/pro...it-specs.shtml

Gary

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