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Proper soffit venting and attic insulation?

Xkylescorex

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Joined
Jan 10, 2016
Messages
160
I made sure I ordered my 20x20 tuffshed garage with a ridge vent, but it didnt come with soffit vents. Easy fix but now after I started to insulate the attic it looks like the pitch of the roof makes it so my insulation blocks any airflow. I also have radiant barrier on the roof. Whats the proper way to vent the attic space? Also no gable vents at all.
Should I maybe put in gable vents instead of soffit vents? Or roll back the insulation so there is an uninsulated area near where the wall meets?
 

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Xkylescorex

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Maybe a little easier to see here
 

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Joemctag

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Aug 11, 2017
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Outside raleigh nc
This situation was recognized many years ago. Google (attic ventilation rafter) baffles. Myself, I used a heavy foamboard, fit snug, about 1” airspace to bottom of roof sheathing. You don’t have a lot of space for insulations that point. Nowadays, with trusses, more room. If you run them 3’ or so from the wall up, you can blow in a lot of cellulose, too, without blocking the ventilation path.
 
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FredWanaker

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Mar 27, 2021
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1,470
Location
NorCal
pictures of the outside where the roof ties to the sides please. Need to determine if there is room on the exterior to mount soffit vents. You may have to go with gable vents down low - however that isn't going to help much with air flow at the center of the shed roof. If there is not a lot of room on the outside you may find that the small round circular vents can be put in every few feet with a baffle to keep the insulation away.
 
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