Osb Or Plywood For Roof Sheathing

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 or plywood for roof sheathing.

Plywood used for roof decking is typically called sheathing and. University of massachusetts meets most building codes for roof and wall sheathing. Home at current prices would cost about 700 more with plywood than osb. Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8.

Sheathing a 2 400 sq. When used as a roof sheathing this tendency to hold moisture means it can degrade faster than plywood when exposed to chronic leaks. In 2001 oriented strand board surpassed plywood in terms of square footage produced. Osb is now used for about 70 percent of all floor wall and roof sheathing in north america.

When osb does get wet it also tends to swell along the edges and those edges stay swollen even after the material has dried out. There are even variants of osb that come with building wrap already in place so installation is as easy as taping the seams together. The most common materials for this are oriented strand board osb or plywood both formed of layers of wood bonded into a panel. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb.

Many contractors will use osb for roofing and subfloors. With edge support and the same snow load 3 8 inch osb can be used. For pricing and availability. Oriented strand board isn t plywood nor is it a type of particleboard fiberboard or wafer board and although it is a newcomer to a plywood dominated market its use for exterior sheathing is.

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. When building a house osb makes for excellent sheathing. Osb takes longer to get wet than plywood but also takes longer to dry out. For pricing and availability.

Building codes the engineered wood association architects and most builders rate plywood and oriented strand board obs sheathing equal in strength and durability. Osb is much more waterproof than plywood and cdx plywood.