Osb For Shed Roof Thickness

With edge support and the same snow load 3 8 inch osb can be used.

Osb for shed roof thickness.

Osb roof decking thickness 7 16 1 2 or 5 8. However there are some sceptics out there who doubt the strength and durability of osb. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Bo remember if the women don t find you handsome they should at least find you handy.

This manufactured wood product is composed of small wood chips that are arranged in layers and glued together. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. I m contemplating upgrading to 1 2 or even 5 8 osb though to reduce roof sag hopefully to nil. The osb thickness will be based on the rafter spacing.

Sheets of 7 16 inch thick with no edge support can be used in an area where the snow load is 30 pounds per square foot. Good enough for houses good enough for a shed. Currently costs about 30 more for an equivalent thickness. 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.

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. Currently we space rafters 16 oc and use 7 16 osb with h clips. For heavier loads a 40 20 rated panel 19 32 or 5 8 will support a 130 psf live load and 48 24 rated panels 23 32 or are good to175 psf. 7 16 will be fine for 16 on center and 5 8 for 24 on center rafters.

I m halfway though sheeting the roof of my shipping container shop and already need to redo some of it. Watch this now to learn how to avoid this same pr. Using oriented strand board osb for shed walls floors and roofs using oriented strand board is a tested way of reducing costs for building your shed. The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24.