Thckness Of Roof Osb Roof Sheathing

Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8.

Thckness of roof osb roof sheathing.

For pricing and availability. 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. This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesn t have too much load. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick.

Thicknesses range from 5 16 to 3 4 inch and the proper one. With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible. Intervals so you know where underlying studs rafters and joists are for nailing. Osb sheathing costs a few dollars less per sheet than 1 2 in.

Most roofs will be sheathed in plywood at least 3 8 inch thick. Osb panels often have lines at 16 and 24 in. Osb is widely used as roof decking material. Several factors must be considered when determining appropriate roof sheathing thickness such as the.

Loads will vary with the pitch of the roof. Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8. In our area 1 2 in. 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.

Oriented strand board commonly referred to as osb is a type of engineered lumber similar to particle board formed by adding adhesives and then compressing layers of wood strands. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. 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. If your roof is more on the flatter side then it s expected to have a heavier load.

Some panels have a textured surface which makes them less slippery when used for roof sheathing. Osb has its advantages. That s considered to be the minimum. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood.

A homeowner recently wrote and asked me the following regarding osb roof decking.