7/16 is generally considered the absolute minimum where rafters/trusses are spaced 24″ O.C. Around here, 1/2″ isn’t common, or even stocked at the lumber yard. If you get snow, 1/2″ is barely even an upgrade from 7/16″. If you get a lot of snow, most builders I know are going more and more to something closer to 19/32.
What is the actual thickness of 7/16 OSB?
T&G OSB Subfloor (Common: 23/32 in. x 4 ft. x 8 ft.; Actual: 0.703 in.
Why is 7/16 OSB so expensive?
OSB is expensive because it takes a long time to expand lumber mills and increase their supply output.
Can I use 7/16 OSB for subfloor?
Oriented strand board, or OSB, is a wood structural panel that can also be used for flooring. It is made from shredded strands of wood pressed together with wax and a special adhesive, then hot pressed into a panel with up to 50 layers of strands. OSB can be used for subfloors, although it is not as common as CDX.
Can 7/16 OSB be used for sheathing?
OSB is the most-used sheathing material for new roofs and roof replacements. You can use 7/16-inch thick OSB sheets without support for areas where the snow load is 30 pounds per square foot because it’s durable and maintains building integrity much longer than other sizes.
Is 7/16 OSB OK for garage walls?
The bottom line is that both OSB & Plywood are suitable for garage walls. They are quite similar as they are both wood structural panels.
Can 7/16 OSB be used for wall sheathing?
Building experts consider oriented strandboard (OSB) and plywood to be equally effective as wall sheathing, roof decking and floor underlayment. Because of the manufacturing process, OSB is less costly and more environmentally sound than plywood. OSB used for wall sheathing should be 7/16 inch thick.
What thickness OSB do I need?
Standard roof sheathing thickness is ½” to ⅝” thick. If you are using OSB for your roof deck, then ⅝” is the recommended thickness. For plywood, which is slightly stronger than strand board, ½” thick is appropriate. Another factor is how far apart your trusses or rafters are spaced.
Is OSB stronger than plywood?
“OSB is stronger than plywood in shear,” says a report by the Building and Construction Technology program at University of Massachusetts–Amherst. “Shear values, through its thickness, are about two times greater than plywood. This is one of the reasons OSB is used for webs of wooden I-joists.”
Which side of OSB goes up on roof?
OSB roof panels should always be installed with the grade stamp facing into the attic and the screened surface (with the nail guide lines) facing up. When the grade stamp is covered by roofing, the building inspector will not be able to confirm that the correct OSB roofing panel was used.
Which side of OSB goes up on floor?
When installing sub-flooring, you’ll want the rough side facing up as well for traction when working. This is especially true when you have OSB that has been treated with a sealant or moisture barrier. Moisture resistant resins can create even more slippery surfaces.
Is OSB board good for roofing?
OSB is now the most-used sheathing and subflooring material for new roofs and roof replacements. OSB is currently selling for less than plywood by approximately $3 per sheet, meaning a savings of several hundred dollars per conventional home.
Is OSB coming down in price?
The average new home uses more than 2,200 square feet of softwood plywood and more than 6,800 square feet of OSB (organized strand board aka particle board). Unlike framing lumber, which has declined in price in the past few months, OSB has gone up by nearly 500%.
Why is OSB going back up?
The price of lumber is climbing again.
Lumber prices have had a volatile year. After steadily rising through the end of 2020 and the beginning of 2021, lumber prices skyrocketed up to an all-time high in May, driven by historic levels of demand and mounting supply chain issues.
Why is OSB still so expensive 2022?
One of the most significant economic factors driving up lumber prices is an increase in tariffs on Canadian lumber imports into the U.S.. Last Nov. 24th, the U.S. Commerce Department raised tariffs on imports from Canadian softwood producers to 17.99 percent, more than double the previous rate.
