Osb Or Plywood For Flat Roof

One of the nice things about plywood is the variety of options you can buy.

Osb or plywood for flat roof.

Oriented strand board osb is a material with oriented strand board osb is a material with high mechanical properties that make it particularly suitable for load bearing applications in construction. Rafters run from the peak of the roof. Osb and plywood come in thicknesses ranging from 5 16 to 3 4 inch and the thickness needed for a particular roof depends on several factors including rafter spacing expected load and roof design. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb.

Yes there are several different material options and. With edge support and the same snow load 3 8 inch osb can be used. Up until 2000 plywood held the majority of the market for wall roof and floor sheathing when it was surpassed by osb which as of 2018 held about 75 of the market share. Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component.

Rafters that are slightly farther apart might require inch or 5 8 inch thick plywood. Both plywood and osb are used for sheathing roofs walls and subfloors they work equally well for these uses are just as easy to drill into and have equivalent ability to hold nails. A viable alternative to plywood this osb board is engineered to prevent any cupping warping or splitting. However osb is generally considered less resistant to water it swells in thickness when exposed to moisture and some people prefer plywood for roofs and subfloors.

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. As a warning it s considered by some to be inferior in quality as compared to plywood. Osb v plywood which is best. The minimum plywood for roofing.

Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. We ll discuss plywood vs osb more later. A roof that lays practically flat will have a much heavier load than a steeper roof that allows rain snow and ice to roll right off. Speaking of osb it s a top choice of homeowners looking for something more affordable than plywood.

Different material options types of roof plywood. When you count sub floors roofs and wall sheathing osb claims about 70 of the wood sheathing market in north america over plywood.