How Thick Should Osb For Roof

We re in dallas so we don t engineer for tremendous live loads for an asphalt shingle and we feel comfortable with 16 oc rafter spacing and 7 16 osb decking.

How thick should osb for roof.

8 tips for getting the best out of your oriented strand board osb how to install roof sheathing pro builder. Thicknesses range from 5 16 to 3 4 inch and the proper one to use depends on the spacing of the rafters. Several factors must be considered when determining appropriate roof sheathing thickness such as the. I m halfway though sheeting the roof of my shipping container shop and already need to redo some of it.

That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. 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. An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof. 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.

Most roofs will be sheathed in plywood at least 3 8 inch thick. Half inch osb is suitable for rafter spacings up to 24 inches whether or not the edges are. 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. With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible.

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. Watch this now to learn how to avoid this same pr. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood.