Venting the soffit of an exterior non-roof awning
I was wondering if you have to vent the underside of an exterior awning that is not a roof and has no insulation in it. It will have T&G decking on the underside.
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Here is a picture. You can see the joists in the area that I am talking about. The home is located on Camano Island, WA and is in a moderate marine environment.
picture
Sam,
Q. "I was wondering if you have to vent the underside of an exterior awning that is not a roof and has no insulation in it."
A. No.
Sam, venting roof systems lowers the roof temperature and clears out moisture. Venting a porch something like you describe is not called for by code if I understand your post. Would it help the roofing last longer? A roof shingle manufacturer may know. Low on my list. For low slope roofs here in NY, I like to completely cover my sheathing with ice and water shield or use 30 pound tar paper half lapped instead of a 2" lap. Comes down to budget and type of roof/building/shed or whatever.
Hope this helps. Basically the answer is no, but venting it if you want to is OK.
Beautiful project Sam. Now that I see your roof... I would say hopefully the underside of it is not vented but is permeable so that there is no trapped moisture inside the structure that is not able to dry.