Plywood Grades For Roofing

This option is basically a specialized plywood grade.

Plywood grades for roofing.

Plywood sheathing is ideal for residential and light plywood sheathing is ideal for residential and light construction and every piece meets the highest grading standards for strength and appearance. This is a popular option because it presents homeowners with functional but affordable roof sheathing. A grade plywood features a smooth sanded surface without knots. We carry four grades of plywood.

Occasionally you may run into a fifth grade called c plugged. Each sheet will have two grades such as ac. Most construction sites will consider the use of either osb or plywood for the roof. 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.

A b c and d. It adds proven performance and durability to new homes room additions and renovations. Another option for an almost perfect sheet of plywood is b grade. A has the highest quality and is the most expensive and d is the least expensive.

The first letter is the face veneer grade and the second is for the back veneer. The grade refers to the quality and appearance of the plywood s face and back veneers. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. A b c and d.

It can withstand moisture for a brief period of time but may become warped and delaminated with consistent exposure to the elements. What kind of plywood for the roof. X signifies the glue that bonds the 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. Cdx is the grade of plywood most commonly used for roofing. It will support roof. Its front has a c grade while its back has a d grade.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. 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. B grade plywood has a mostly smooth surface and a solid foundation.

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. Cdx plywood is a construction grade type of plywood that is designed for exposure to the elements. All large knots are replaced with football shaped patches which can be sanded and finished with the rest of the panel. 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.