Roof Plywood Thickness Code

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.

Roof plywood thickness code.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Structural roof sheathing shall be designed in accordance with the general provisions of this code and the special provisions in this section. See chapter 10 means of egress particularly 1011 12 stairway to roof 1011 12 2 roof access and 1011 16 ladders. 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.

Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. 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. That s considered to be the minimum. The typical thickness range for sheathing is 3 8 to 3 4 inch.

Loads will vary with the. Avoid roof complaints with proper framing sheathing and roofing techniques. This video may depict some work practices that do not meet current safety standards. 2018 international residential code.

Produced by apa the engineered wood association formerly the american plywood association in 1989. Sheathing should be a minimum of 19 32 inch thick. Chapter 9 roof assemblies. Always ensure your work site is compliant with current osha regulations.

8d ring shank nails should be used instead. Most roofs will be sheathed in plywood at least 3 8 inch thick. Never attach roof sheathing with staples. 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.