Roof Sheathing Material Plywood Vs Osb

It is generally believed that osb is cheaper than plywood.

Roof sheathing material plywood vs osb.

This makes the material perfect for roofing and other types of use. It is true as the price of every osb board is around 15 20 per sheet 4 8 sizes. When used as a roof sheathing this tendency to hold moisture means it can degrade faster than plywood when exposed to chronic leaks. It s simply the lesser of two evils according to lipinskiy.

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. 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. You can have an osb that s larger than your plywood. Cost of plywood vs osb osb is cheaper than plywood by about 3 to 5 per panel.

For a typical 2 400 sq. Osb is made by combining glue resin and wood chips and pressing them into the shape of a plywood sheet then baking everything together. It spans the rafters to support the roofing and in the case of panel sheathing such as plywood or osb it acts as a diaphragm with the walls to resist horizontal loads. Osb win against plywood when it comes to shear strength.

Home osb is about 700 less expensive compared with plywood if used as the subfloor sheathing and roof decking. Sheathing a 2 400 sq. Roof sheathing attaches to the surface of the rafters or trusses to form the structural skin of the roof. Lipinskiy mentions that plywood delaminates and unfortunately manufacturers do not issue warranties when the plywood rots on account of the elements.

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. Osb takes longer to get wet than plywood but also takes longer to dry out. Home at current prices would cost about 700 more with plywood than osb. 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 osb and plywood absolutely hate water. Not just that but most an osb is manufactured in different sizes. To be fair osb is not exactly best friends with water either. Compared to cdx oriented strand board osb is made very differently.

Unlike other materials an osb has a squarer and smaller dimension.