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www.doityourself.com/forum/basements-attics-crawl-spaces/72311-attic-span-plywood-thickness.html

Nov 5, 2001 ... Basements, Attics and Crawl Spaces - Attic Span and Plywood Thickness - I have an unfinished attic which spans 17 feet to centerline.

everythingwhat.com/how-do-you-floor-an-attic-with-plywood

Sep 4, 2021 ... How thick should Plywood be for an attic floor? ... You need 3/4-inch plywood. The thinner plywood is acceptable when the joist spacing is 16 ...

theinfinitekitchen.com/advices/faq-how-thick-should-plywood-be-for-attic-storage

Nov 2, 2021 ... Joist Spacing and Attic Use You need 3/4-inch plywood. The thinner plywood is acceptable when the joist spacing is 16 inches.

forums.anandtech.com/threads/attic-flooring.144439

This weekend I want to install a plywood floor in our attic. My only question is, what is my best bet as far as thickness?

www.garagejournal.com/forum/threads/advice-on-garage-attic-storage.9086

Apr 18, 2007 ... What do you all recommend for plywood thickness for the flooring? I will be using about four 4 x 8 sheets cut into 2' x 4' pieces to give me ...

www.garagejournal.com/forum/threads/attic-floor-sheathing.436819

Nov 26, 2019 ... I would go thicker especially if storing stuff also. ... I used 1/2 ply on 32" centers in my attic. a bit spongy but for occasional use, ...

terrylove.com/forums/index.php?threads/correct-plywood-for-making-walkway-in-attic.73658

Jan 15, 2018 ... ... walkway so I don't have to balance on the joists when I inspect my attic. Could create some storage space as well. 5/8" thick enough?...

www.finehomebuilding.com/forum/plywood-vs-osb

Nov 21, 2006 ... I just bought some 3/4" T&G OSB today for an attic floor for around $13.50 a sheet. Not sure what thickness your "4 ply" is but I'm guessing...

www.wikihow.com/Floor-an-Attic

Measure the plywood and attic door. Purchase half-inch (1.27 cm) thick plywood to act as your flooring. You'll need to make sure that the plywood can fit ...

www.reddit.com/r/HomeImprovement/comments/a8rlrk/should_i_use_osb_or_regular_plywood_for_an_attic

Dec 23, 2018 ... I'm wondering if it would be better to go with plywood or OSB. ... I see pine attic decking in 19/32 at Home Depot for just under $10/sheet.

homeguides.sfgate.com/size-plywood-attic-floor-83695.html

Thick plywood sheets are durable, but they're also heavy, and it may be safer to use 1/2-inch plywood -- which is actually 15/32 inch thick -- to avoid loading ...