Osb Or Plywood For Roof Sheathing

With edge support and the same snow load 3 8 inch osb can be used.

Osb or plywood for roof sheathing.

Osb is much more waterproof than plywood and cdx plywood. Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8. 2x greater shear strength than similar sized plywood source. For pricing and availability.

The most common materials for this are oriented strand board osb or plywood both formed of layers of wood bonded into a panel. Home at current prices would cost about 700 more with plywood than osb. 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. In 2001 oriented strand board surpassed plywood in terms of square footage produced.

There are even variants of osb that come with building wrap already in place so installation is as easy as taping the seams together. For pricing and availability. University of massachusetts meets most building codes for roof and wall sheathing. 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.

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. Both types of panels contain phenol formaldehyde in the adhesive osb also contains isocyanurate resin but neither contains the urea formaldehyde which is quite toxic to humans. 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.

Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8. When building a house osb makes for excellent sheathing. Plywood used for roof decking is typically called sheathing and. Osb is now used for about 70 percent of all floor wall and roof sheathing in north america.

When used as a roof sheathing this tendency to hold moisture means it can degrade faster than plywood when exposed to chronic leaks. Building codes the engineered wood association architects and most builders rate plywood and oriented strand board obs sheathing equal in strength and durability.