How Thick Should Osb For Roof

I m halfway though sheeting the roof of my shipping container shop and already need to redo some of it.

How thick should osb for roof. Half inch osb is suitable for rafter spacings up to 24 inches whether or not the edges are. With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible. Most roofs will be sheathed in plywood at least 3 8 inch thick. Osb roof decking thickness 7 16 1 2 or 5 8 currently we space rafters 16 oc and use 7 16 osb with h clips.

Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood. 8 tips for getting the best out of your oriented strand board osb how to install roof sheathing pro builder. Roof sheathing standard roof sheathing which consists of 4 by 8 sheets of plywood or oriented strand board or osb is 1 2 inch thick and attaches directly to the roof rafters or the roof trusses. An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof.

Thicknesses range from 5 16 to 3 4 inch and the proper one to use depends on the spacing of the rafters. Loads will vary with the pitch of the roof. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. For the curious 7 16 osb has a span rating of 24 16 and with supports every 24 inches is good for a roof live load of 40 psf pounds per square foot with a 10 psf dead load.

Watch this now to learn how to avoid this same pr. You need to find a sheathing with a span rating of at least 32 16 which means either 15 32 or 1 2 thick osb. Roofing plywood sizes material wood joist and plywood or osb decking oriented strand board common 15 32 in roof decking material thickness osb or plywood for roofs walls roof deck materials to ensure a le.