Roof Sheathing Thickness Code

Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7.

Roof sheathing thickness code. Sheathing is installed perpendicular to roof trusses. You would go to table r503 2 1 1 1 to determine minimum nominal panel thickness. Allowable spans for lumber floor and roof sheathing a b for si. 2018 international residential code.

8d ring shank nails should be used instead. 1 inch 25 4 mm. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. 2018 international residential code.

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. On the upcodes website. And for wood structural panel sheathing r803 2 2 allowable spans. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.

Minimum thickness of lumber roof sheathing for si. Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick. Loads will vary with the. Are h clips required by the building code for roof sheathing.

H clips are also necessary for other wood panel thickness and span combinations. According to 2009 irc table r803 1 minimum thickness of lumber roof sheathing. On the upcodes website. 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.

1 inch 25 4 mm. Chapter 8 roof ceiling construction. Never attach roof sheathing with staples. Minimum 420 fb 660 000 e.

Sheathing should be a minimum of 19 32 inch thick. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. Chapter 9 roof assemblies. Contains sections covering roof framing roof sheathing and roof ventilation.

Wednesday june 13 2018.