attic floor material
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attic floor material
I'm putting in attic stairs in my garage ceiling. Actually there is no ceiling and no attic yet
just joists above. I'm going to store things up there. I went to the store to look for wood flooring but got lost in the options. What exactly do I want to put on the floor up there? 2x10 joists every 12", spanning about 20 feet.

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Ply is 1/2 as heavy as osb. Code on your joists is 2x10 - 12"o.c. - 17'-10". So your over-spanned for 50# per square foot load as a living space, but great for storage. I'd put a least one row of blocking across the middle, to make them act as one. Definetly get t/g , with construction adhesive glue. Be safe, GBR