Osb Roof Sheathing Thickness

Some roofers or manufacturers don t like to install over skip sheathing but i ve never had a problem with it locally.

Osb roof sheathing thickness.

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. With edge support and the same snow load 3 8 inch osb can be used. Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8. Thicknesses range from 5 16 to 3 4 inch and the proper one to use.

Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. I ve never used commodity osb on a roof but it s probably fine in 5 8 thickness and possibly in 1 2 thickness. Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8. For pricing and availability.

Page 6 of 7 v1 0 01 2008 osb roof design example calculations using asd 4x8 foot 24 16 teco sheathing span. 1 inch 25 4 mm. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. 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 pricing and availability. 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. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Allowable spans for lumber floor and roof sheathing a b for si.

Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7.