Roof Plywood Thickness Code

Structural roof sheathing shall be designed in accordance with the general provisions of this code and the special provisions in this section.

Roof plywood thickness code.

Sheathing should be a minimum of 19 32 inch thick. See chapter 10 means of egress particularly 1011 12 stairway to roof 1011 12 2 roof access and 1011 16 ladders. Never attach roof sheathing with staples. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. This video may depict some work practices that do not meet current safety standards. Always ensure your work site is compliant with current osha regulations.

Loads will vary with the. On the upcodes website. Avoid roof complaints with proper framing sheathing and roofing techniques. 8d ring shank nails should be used instead.

2018 international building code. 2018 international residential code. The typical thickness range for sheathing is 3 8 to 3 4 inch. Roof sheathing conforming to the provisions of table 2304 7 1 2304 7 2 2304 7 3 or 2304 7 5 shall be deemed to meet the requirements of this section.

Produced by apa the engineered wood association formerly the american plywood association in 1989. That s considered to be the minimum. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesn t have too much load.