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Old 11-30-2010, 05:20 PM   #1
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Attic Ventilation w/ Blocked Rafter Bays


Hi all,

I'm in the process of converting the kneewall attics in my Minneapolis (brrr!) home from conditioned to unconditioned spaces. Upon tearing out the nasty old rafter insulation, I discovered that the rafter bays are blocked with wood near the eaves, here's a picture:



The rafter bays between the roof and second floor living area are also blocked, stuffed with fiberglass batts. I don't think I can remove these without pulling up the roof, and winter isn't exactly the best time for that!

Given all this blockage, are my soffit and ridge vents doing anything for me? How should I ventilate the attic to avoid moisture problems after blowing insulation into the floors and kneewalls?

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Old 11-30-2010, 06:51 PM   #2
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Attic Ventilation w/ Blocked Rafter Bays


Moved to building and Construction. You might get some ideas here

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Old 11-30-2010, 07:27 PM   #3
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Attic Ventilation w/ Blocked Rafter Bays


Gable Vents.
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Old 12-01-2010, 04:15 AM   #4
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Attic Ventilation w/ Blocked Rafter Bays


I see your point your heating/cooling bill will drop quite a bit .How many square feet are you heating/cooling in the attic?Take a picture of the outside , do you have boxed sofits or is the rafter covered directly by the Fascia Board?
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