Most roofs will be sheathed in plywood at least 3/8 inch thick. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Loads will vary with the pitch of the roof; the flatter the roof, the greater the load on any one section. Steeper roofs will have lighter loads per square foot.
This of course begs the inquiry “Which is the best plywood size for roofing?”
Our best answer is the most common plywood sizes are 4- x 8-feet sheets and 5- x 5-feet sheets. We also carry pre-cut project panels that are available in different sizes that may vary by store. The most common thickness of plywood is 1/2-inch, but plywood thickness can range from 1/8-inch to 3/4-inches.
Another frequent query is “What is the best plywood for roofing?”.
It has a prominent grain that is coated by a system to make it hard as concrete. This kind is known for its firmness, resistance character, inflexible nature, and its hardness on the surface. Some more things to investigate are: tropical plywood, aircraft plywood, marine plywood, flexible plywood, and decorative plywood.
Your price could vary depending on how much the roofing company charges for labor, but generally you can expect to spend between $70 to $100 for each sheet of plywood. A 4 x 8 sheet of plywood covers about 32 square feet of roof area—and the average roof measures about 3,000 square feet.
What thickness OSB for a roof?
Typical types of wood used for roof sheathing are oriented strand board, known as OSB, and plywood, the most popular being OSB. 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. With edge support and the same snow load, 3/8-inch OSB can be used.
Roofing contractors use this kind of sheathing when there is a need for high levels of strong support for a roof. Oriented Strand Board Decks (OSB) Oriented strand board decks have quickly become a preferred option for modern roof sheathing. Plywood, and the bottom line in addition are a few extra items to investigate.