Plywood Grades For Roofing

It adds proven performance and durability to new homes room additions and renovations.

Plywood grades for roofing. Cdx is the grade of plywood most commonly used for roofing. 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. Most construction sites will consider the use of either osb or plywood for the roof. What kind of plywood for the roof.

It will support roof. A grade plywood is the highest quality and is the most expensive as most sheets will be free of flaws. B grade plywood has a mostly smooth surface and a solid foundation. Plywood sheathing delivers outstanding rigidity strength and versatility and is an excellent choice for.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Cdx plywood is a construction grade type of plywood that is designed for exposure to the elements. It can withstand moisture for a brief period of time but may become warped and delaminated with consistent exposure to the elements. This is a popular option because it presents homeowners with functional but affordable roof sheathing.

Another option for an almost perfect sheet of plywood is b grade. This option is basically a specialized plywood grade. We carry four grades of plywood. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.

A grade plywood features a smooth sanded surface without knots. Its front has a c grade while its back has a d grade. A has the highest quality and is the most expensive and d is the least expensive. One side of the plywood could be a grade with the other side a d grade.

In the united states there are four basic softwood construction plywood veneer grades you need to worry about. Each sheet will have two grades such as ac. 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. X signifies the glue that bonds the veneers.

A b c and d. Occasionally you may run into a fifth grade called c plugged. A half inch cdx plywood is often used with rafter with 24 inch spacing. The grade refers to the quality and appearance of the plywood s face and back veneers.

All large knots are replaced with football shaped patches which can be sanded and finished with the rest of the panel. 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. 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.