Osb Or Plywood For Metal Roofing
Metal roofing screws need to go into framing.
Osb or plywood for metal roofing. It is made of wood chips and glue. It has been estimated that osb has a stronghold of ¾ of the market share, mainly because it’s the more affordable option.
While a sheet of plywood might be 5 to 7 plies thick, a sheet of osb is made from as many as 50 strand layers packed and compressed into the same thickness. When they are used in roofing, osb can retain heat and water perfectly.
Always pay attention to the thickness of the boards, and work accordingly with your materials. It is made of multiple layers of thinly cut, solid sheets of wood that are pressed together.
The metal roof store person told me that osb is better than (or at least as good as) plywood, and it costs less. I guess at 14x16 you won't be towing this one, but the wind still blows, and osb does not have adequate holding power to resist the wind trying to rip the metal roof sheeting off.
It also has less tendency to absorb moisture, but once moisture. Osb has a greater shear strength than plywood panels;
But still, no one will blame you if you choose plywood over osb. 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.
The roof decking should never sustain water damage for the following reasons: It is usually made of 4′ by 8′ sheets that should be 1/2″ thick.
Oriented strand board, commonly referred to as osb, is a type of engineered lumber similar to particle board, formed by adding adhesives and then compressing layers of wood strands. However, the board is lacking natural moisture inside and won’t dry as quickly as plywood.
Unfortunately, an osb is less resistant to water compared to plywood. When you install the osb, facing the metal towards the attic.
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