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Old 03-21-2012, 06:13 PM   #1
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air flow in atttic


hi first time writer, and have to start out by saying sorry for my spelling it sucks sorry. now to my problem i have a small crawl hole to get into my attice in my grage. we just redid the roof on my house and grage and since then i have warm air in the summer and winter blowing down from there is this right or do i need to add more vents thnks please ask questions if u need more info.

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Old 03-21-2012, 08:28 PM   #2
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air flow in atttic


you are not clear on what you need to get help with. An attic should be hot in the summer and cold in the winter. It is outside the building envelope and not a conditioned space. Venting is to remove excess moisture in the winter months. at the soffits on the eave of the roof intake air is to be provided and will exhaust out the ridge vents at the top of the roof. the attic floor should be air sealed to keep warm air from the house rising into the attic to condense on the cold roof sheathing or melt the snow on the roof which is what creates ice dams.

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Old 03-21-2012, 08:33 PM   #3
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air flow in atttic


Pictures would be helpful in this case (standing back from the home), but the attic is usually unconditioned space as Bob mentioned and should be ideally pretty close to ambient air temperature if the venting is proper.

Summer radiant heat gain will make it hotter than outside air temp but if the venting is spot on, the convection should create a decent pull from the intake air so as to keep temps somewhat close to ambient.
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