Roof venting for a shop?


  #1  
Old 08-03-16, 07:41 AM
T
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Roof venting for a shop?

Hi all

I'm re-roofing my shop next week. There is currently sofit venting but no roof vents. The shop is not heated. I'm curious if I should bother putting venting on the roof? The attic looks all good right now without any venting for the past 20 years. Vents are a cheap enough addition I'm just thinking its one more point of failure down the road and if I don't need them then all the better.

If I do need venting could I get away with gable venting at each end?

Edit: The shop roof is 6 square. on a 4/12 slope.

Thanks
 
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Old 08-03-16, 07:42 AM
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The soffit vents are useless without a place for the intake air to exit. I'd add a ridge vent.
 
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Old 08-03-16, 07:47 AM
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Agreed in theory.... Its not exactly sealed like for knox. There is pretty big gaps at the gable and roof line which may be why its been fine without a proper venting strategy.
 
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Old 08-03-16, 08:05 AM
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Lower slopes, wind, and snow can complicate a ridge vent. But, 4/12 isn't terrible and even if the snow covers it in the winter the ventilation may be less important in winter. Exception being lots of moisture from snow or rain.

Gable vents would certainly work and have been paired with soffit vents for many years. Since you are not having a problem currently, ridge or gable should be a plus. Note, fine blowing snow can enter either, just a function of building orientation and wind currents. Hard to predict but usually easy to fix.

Bud
 
 

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