Osb Thickness Roof

Another issue that many people encounter is what size plywood the roof may need.

Osb thickness roof.

Thicknesses range from 5 16 to 3 4 inch and the proper one to use. Most roofs are spaced at least 20 inches apart. With edge support and the same snow load 3 8 inch osb can be used. 25mm thick swiss krono osb 3 as a walkable subroof surface.

The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24. 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. For this you can either go for a half inch or 5 8 inch thick sheet. In this case you can t use a 3 8 inch thick sheet.

This riding arena was built using swiss krono osb f 15mm thick for the roof and 18mm thick for the walls. He is president of isaiah industries an organization recognized as one of the world s leading metal roofing manufacturers. Fortunately this is one issue that has primarily been standardized by the industry. Todd miller has spent his entire career in the metal building products manufacturing industry.

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. Once the spacing hits 24 inches a 5 8 inch thick sheet is more ideal. Both cdx plywood and osb tend to come in standard sheets of four foot by eight foot 4 8. 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.

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. The roof of a riding arena made with strong panels consisting of 18mm thick swiss krono osb f. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. Do not do anything that might later void the wind warranty they offer.