Detached garage venting

Old 01-23-08, 10:21 AM
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Location: Mountain View, CA
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Detached garage venting

I have a detached garage in Mountain View, CA built in 1962. The first roof was wood shingles over skip sheathing. Composite shingles were layed over that a long time ago and now it's time to redo it. I plan to strip all the old shingles, but probably keep the skip sheathing and lay 1/2 decking over them, and then a conventional composite shingle installation.

The building gets very hot in the summer. It has no ventilation up high at all.

I'd like to add rigid foam board insulation on the underside of the rafters, put vents into the eaves, and put a ridge vent onto the top. Iím hoping that will keep good airflow (due to convection) under the roofing (helping to keep it long-lasting), but also keep some of the heat out of the garage itself, while still allowing me to use my overhead storage space.

Am I on the right track with this?

If the rest of the space is still too hot, I would likely add a thermostatically controlled gable-end vent.

-- Rich
Old 01-23-08, 10:29 AM
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You're on the right track!

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