Is Roof Sheathing Required

Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component.

Is roof sheathing required.

A strong resilient roof is a home s first line of defense when the roof deck is exposed to weather. 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. Rafters run from the peak of the roof. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

The minimum plywood for roofing. Roof sheathing or decking is one of those elements. Wood structural panel roof sheathing shall be bonded by exterior glue. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof.

Nails from sheathing to ridge board roof sheathing ridge board ridge board joist or truss joist or truss roof sheathing vent holes on each side of ridge board. Note holes should not remove more than half of the sheathing section note. If roof sheathing is cut and removed to achieve an air slot continuity and diaphragm action are affected. H clips provide additional stiffness between bearing points for the unsupported edges of wood panel plywood or osb roof sheathing along with the necessary 1 8 gap for expansion as shown below illustrated on a bag of simpson h clips.

Solid sheathing is also recommended in areas subject to windblown snow. Solid sheathing required for wood roofs in high wind areas. This is required in areas of high wind or seismic activity and wherever else a solid roof diaphragm is required by code. The typical thickness range for sheathing is 3 8 to 3 4 inch.

Sheathing should be a minimum of 19 32 inch thick. Never attach roof sheathing with staples. As a result most nailing patterns in high wind areas require 8d nails at a maximum of 6 inch spacing along all framing members. 8d ring shank nails should be used instead.