Roof Sheathing Thickness Code

Sheathing should be a minimum of 19 32 inch thick.

Roof sheathing thickness code.

2018 international residential code. Many code requirements are not inspected. 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. 8d ring shank nails should be used instead.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Loads will vary with the. Minimum 270 fb 340 000 e. According to 2009 irc table r803 1 minimum thickness of lumber roof sheathing.

Minimum thickness of lumber roof sheathing for si. Are h clips required by the building code for roof sheathing. H clips are also necessary for other wood panel thickness and span combinations. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.

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. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. 1 inch 25 4 mm. Wednesday june 13 2018.

Minimum 420 fb 660 000 e. Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. And for wood structural panel sheathing r803 2 2 allowable spans. Chapter 8 roof ceiling construction.

Allowable spans for lumber floor and roof sheathing a b for si. On the upcodes website. Chapter 9 roof assemblies. On the upcodes website.

One or two h clips will often allow a longer span between roof trusses rafters. You would go to table r503 2 1 1 1 to determine minimum nominal panel thickness. Never attach roof sheathing with staples. 1 inch 25 4 mm.

Contains sections covering roof framing roof sheathing and roof ventilation.