Plywood Grades For Roofing

One side of the plywood could be a grade with the other side a d grade.

Plywood grades for roofing.

Cdx is the grade of plywood most commonly used for roofing. Each sheet will have two grades such as ac. This option is basically a specialized plywood grade. The wood is graded on each side from a to d depending on the level of imperfections a being free of all imperfections and knots and d being un sanded and considerably defected.

Occasionally you may run into a fifth grade called c plugged. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. This is a popular option because it presents homeowners with functional but affordable roof sheathing. X signifies the glue that bonds the veneers.

In the united states there are four basic softwood construction plywood veneer grades you need to worry about. It adds proven performance and durability to new homes room additions and renovations. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. What kind of plywood for the roof.

B grade plywood has a mostly smooth surface and a solid foundation. All large knots are replaced with football shaped patches which can be sanded and finished with the rest of the panel. Plywood grades a b the highest quality and most expensive types of softwood plywood are the a b grades which is perfect for shop projects like workbench plans. Its front has a c grade while its back has a d grade.

A b c and d. A has the highest quality and is the most expensive and d is the least expensive. Cdx plywood is a construction grade type of plywood that is designed for exposure to the elements. A grade plywood features a smooth sanded surface without knots.

Another option for an almost perfect sheet of plywood is b grade. The first letter is the face veneer grade and the second is for the back veneer. If you re looking for plywood that is smooth and can be easily painted this is a great option. We carry four grades of plywood.

Before lumber companies began selling osb the standard choice for sheathing a roof with a 24 inch rafter spacing was 1 2 inch cdx plywood the letters cdx indicate that it is construction grade. When it comes to choosing what kind of plywood you need for the roof it is important to understand the basic categories that you can choose from. It can withstand moisture for a brief period of time but may become warped and delaminated with consistent exposure to the elements. Plywood sheathing delivers outstanding rigidity strength and versatility and is an excellent choice for.

The grade refers to the quality and appearance of the plywood s face and back veneers. A half inch cdx plywood is often used with rafter with 24 inch spacing. A grade plywood is the highest quality and is the most expensive as most sheets will be free of flaws. Most construction sites will consider the use of either osb or plywood for the roof.