Osb Or Plywood For Roof Decking

Plywood on the other hand is made with thin sheets of wood that have been cut from a spinning log then glued together with the grain laid out in alternating directions to maximise strength.

Osb or plywood for roof decking. For pricing and availability. Osb is cheaper than plywood by about 3 to 5 per panel. Both osb and plywood absolutely hate water lipinskiy mentions going on to say that the most important part regardless of which decking option you choose is that all penetration points on a roof are sealed. Osb is made of small and fairly rectangular shaped wood chips from small resinous trees which are bonded into a panel form with wax and synthetic resin.

Today you can find osb in thickness from 7 16 to 1 1 8 for different applications from roof wall subfloor i joists and everything between. Osb boasts a more consistent density. University of massachusetts meets most building codes for roof and wall sheathing. 2x greater shear strength than similar sized plywood source.

In order to obtain the thin sheets of laminate to make plywood manufacturers have to slice them from. Osb panels can be manufactured in lengths up to 16 feet or sometimes even higher while plywood is generally limited to 8 to 10 feet. Some panels have a textured surface which makes them less slippery when used for roof sheathing. Osb panels often have lines at 16 and 24 in.

Moisture resistance and problems. For a typical 2 400 sq. While a sheet of plywood might be 5 to 7 plies thick a sheet of osb is made from as many as 50 strand layers packed and compressed into the same thickness. In our area 1 2 in.

It is often less expensive than cdx plywood because this manufacturing process doesn t require the same costly veneers found on the front and back of cdx plywood. Because of the way it s constructed osb has less tendency to swell and contract with. Home osb is about 700 less expensive compared with plywood if used as the subfloor sheathing and roof decking. Can oriented strand board osb be used for roofing.

Osb sheathing costs a few dollars less per sheet than 1 2 in. Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8. A few other downsides to plywood. Intervals so you know where underlying studs rafters and joists are for nailing.

For pricing and availability. Oriented strand board osb combines wood chips glue and resin into the shape of a sheet of plywood and bakes them together.