Is Osb Plywood Good For Roofing

Like particle board and mdf osb comes from wood shavings.

Is osb plywood good for roofing.

Both plywood and osb are used for sheathing roofs walls and subfloors. With edge support and the same snow load 3 8 inch osb can be used. It has been estimated that osb has a stronghold of of the market share mainly because it s the more affordable option. While plywood remains a good and viable option the fact remains that osb is now the preferred choice.

Use 5 8 inch c c pts grade for your overhangs and 5 8 inch cdx for the rest. 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. 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. 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.

Plywood is better than osb for subfloors. As a homeowner if you find yourself in this position know that when you install a new decking system you will have to decide between using plywood or osb. Just make sure it is exterior grade ply so it will not delaminate if it gets wet. However with osb the layers are more cross oriented.

2x greater shear strength than similar sized plywood source. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Despite its common use as such we don t recommend using osb for subfloors but that s really just for aesthetic reasons. Plywood holds nails or staples much better.

Osb takes longer to get wet than plywood but also takes longer to dry out. New homes will usually see a few rainfalls before a roof is on and as noted above osb doesn t handle moisture well. 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. They work equally well for these uses are just as easy to drill into and have equivalent ability to hold nails.

Although oriented stranded board osb has similar uses to plywood it has a much coarser finish. University of massachusetts meets most building codes for roof and wall sheathing. We form the layers by shredding wood and then joining them together with adhesive. According to dmitry lipinskiy owner of roofing insights there is a 5 chance that older homes will need a completely new decking system when their roofs are repaired.