Hip Roof Venting

AngKir

I have a roofing replacementing coming up, and I wanted to know if I should go with ridge vents or box vents? What would be the proper way to put ventalation on this attic? I may down the road finish off the attic as there is a ton of space up there, thought this may be an important factor.
As of now there is vented soffit. However this may need replaced because I have a squirrel problem...
I'm hoping that the pictures show up so it is easier to see.
I'm not the best on roofing, I just know this one needs replaced as it is original to the house (1930) the wood underneath it is boards on a diagonal.
The ridges of the roof have steel caping it off on the outside.
I just want to double check around before having anything done to the roof.

Attached Images

  

johnk

I think a powered roof vent would be the best for your roof .JMO

Gary in WA

Air seal the attic first: http://www.advancedenergy.org/buildi...%20Studies.pdf

http://www.ronhungarter.com/black_mold.html

http://www.rd.com/how-to-seal-attic-...icle18158.html

Be safe, Gary

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seeyou

You have little or no ridge to ridge vent. Box vents or larger below ridge vents would be the best option, IMHO. Before installing a powered vent, make sure there is adequate inlet for it (soffit vents) and that the attic is air sealed.

AaronB

Hip vents are cool, too, if they are PROPERLY installed.

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seeyou

You have a product you're fond of?. I've never seen one I liked.

AaronB

I think they were made by Mid-America Building Products.

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Ed the Roofer

I have only installed continuous hip venting on structures that contained a cathedral/vaulted ceiling below, since each individual rafter bay needed an exhaust portal and it worked very well from post job evidence and analysis.

Ed

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tpolk

is there a minimum pitch for the hip vent. i have a situation where i have maybe 3' of ridge

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Ed the Roofer

As far as the minimum pitch goes, the lowest pitch a proper shingle sloped roof can be is around a 2 1/2 per 12 pitch.

I used the Smart Vent on a mid-roof application as low as that 2 1/2 per 12 which has now been present for 3 winter seasons with not problems.

Ed

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tpolk

my roof is 4/12. we have roofing suppliers in our area is this a common item? thanks

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Ed the Roofer

No, it is not common.

Ensure that the brand of Ridge/Hip Vent material manufacturer you decide to use allows specifications for it's installation.

I think that the one that I used was Owens Corning, Vent Sure.

Ed

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