When CDX plywood is used as roof sheathing, the C side of the plywood is placed up, where it will be covered by roofing felt and then shingles. This leaves the D side facing down, into the attic, where it will most likely be seen.
This means that one side of the plywood is Grade A and the other is Grade B or C. For most projects, these types of plywood will work because you can put the higher rated side facing out while the lower rated side is hidden facing in.
One source claimed to find them, scan the panel from side to side across the grain. Despite quality control standards practiced in the hardwood plywood industry, slight imperfections may slip by the inspectors. These flaws may become the deciding factor in selecting which face to use in your project.
While writing we ran into the inquiry “Which plywood face is right for your project?”.
Let us figure it out. Only the premium grades of hardwood veneer plywood—AA, A, and A1 —pose a problem in selecting the right face for a project. These grades have veneers on both sides that may at first glance look nearly identical (especially AA).
According to the Structural Board Association, the tongue-and-groove profile is not symmetrical, so the sheets must all be facing the same way for the joints to match. With those panels, look for the “This side down” stamp and follow that direction.
You should be thinking “What is the orientation of plywood?”
Ashton Avegno, an engineer from New Orleans, Louisiana, replies: The orientation of plywood depends on its location and use.
Another popular query is “What is the purpose of plywood on the side of a house?”.
My chosen answer is the plywood that goes on the side of a newly-framed house serves a structural purpose — it ties the studs together and makes the walls resistant to twisting and bending. The thickness of plywood a house needs depends on whether you nail the siding through the sheathing to the studs or only to the plywood.
Plywood should be run horizontal with a 4 foot stagger. Because studs are crowned all up, sheeting horizontal will pull the crown out and straighten the wall up. Because plywood bends easily on its length, standing it vertical will only allow the stud to bow outwards, or inwards if it was crowned upside down.
Is it hard to choose the right hardwood veneer plywood face?
Often, though, the “two-faced” nature of premium grades makes that choice a difficult one. Only the premium grades of hardwood veneer plywood—AA, A, and A1—pose a problem in selecting the right face for a project. These grades have veneers on both sides that may at first glance look nearly identical (especially AA).
Why is plywood with tongue and groove preferred for flooring?
, product overview Sturdi floor can be used as a single-layer flooring system, under wall-to-wall carpet and pad, hardwood flooring, and vinyl or ceramic tile. Firm nail holding ability helps prevent loose fasteners in hardwood flooring. Features a tongue-and-groove design and can be painted or stained to finish as needed or desired. Stainable and paintable, and more items.
Which side of the sheathing should face out?
When installing in vertical applications such as wall sheathing, you’ll want to orient the smooth or stamped side facing out. The smooth side has a better moisture resistance and will ultimately provide better performance against weather.
How to calculate tongue and groove wood?
How to build wood retaining wall with tongue and groove?
Use a taut string and stakes or a snapped chalk line to help you create a straight line. If you need to extend your wall with another post to create the final 3 feet (0.91 m) then do so. Space your posts 16 to 18 inches (41 to 46 cm) apart for load-bearing walls, which are walls that support something aside from their own weight such as a roof.