Roof Sheathing Should Be Installed

Tongue and groove installations require thicker material at least 1 1 2 inches thick as they don t often require insulation and often double as the ceiling.

Roof sheathing should be installed.

If the top chords of trusses or rafters are warped or bowed install blocking to straighten. For plywood composite or osb boards installed on rafters it should be at least 5 8ths of an inch thick. Never attach roof sheathing with staples. 24 inches on center the actual distance between panel supports measured along the slope is greater than the truss spacing.

In this case to keep the panel s strength axis perpendicular to the hip trusses the panels on the hip roof portion must be installed with their long dimension oriented up and down the slope. Then its condition is inspected. Trusses or rafters should be shimmed as necessary to provide a level nailing surface. 8d ring shank nails should be used instead.

Sheathing should be a minimum of 19 32 inch thick. Sheathing is installed perpendicular to roof trusses. In areas where the wind speed is greater than 130 mph nails for attaching the roof sheathing to intermediate supports should be spaced 6 inches on center for at least the first 48 inches from the ridges eaves and gable end walls. This can cause a problem because while the hip trusses maintain their normal spacing e g.

The first thing we check is the thickness of the material used. Local roof repair contractors inspect the sheathing during maintenance repairs and especially during roof replacement. This can be done with a straight piece of lumber 6 feet to 10 feet long or a long carpenter s level.