Osb Roof Nailing Pattern

And osb structural panel sheathing used for roof decks of steep slope roof assemblies.

Osb roof nailing pattern.

Most of the time you ll need to contact a local building inspector directly to get a definite answer if it s not already written out for you on the blueprints or manufacturers specifications. Nail spacing for sheets of osb and plywood is 8 inches per nail. The proper way to install osb. For all owens corning shingles roofing nails should penetrate into the wood deck by a minimum of inch or completely through the roof deck by a minimum of 1 8 inch.

Ventilate the roof according to current building codes. Allow for expansion osb panels can swell slightly so leave a 1 8 inch gap between. I like to give them a call about any new nailing schedules that i m uncertain about. Some brands of osb come with nailing patterns which make it simple to hit the studs when nailing in the plane.

Nailing schedules for wood structural panel roof sheathing plywood and oriented strand board osb. Follow these 5 simple construction steps for roof sheathing and scroll down to see more details on each with installation hints and tips below step 1. Recommendations were developed through engineering analysis and by full scale laboratory testing. Properly fasten panels including fastening and spacing hints.

Oriented strand board or osb is a sheet panel product similar to plywood made from layers of wood strands that are oriented in opposite directions. This means that you ll need to use six nails per each truss that runs under the sheathing because each sheet measures 4 feet wide by 8 feet long. These schedules were calculated to provide resistance to wind uplift pressure as required by most codes. 4 feet equals 48 inches which you then divide by 8 to determine that you ll need six nails where the board comes in contact with a truss.

Use panels rated as exposure 1 or better. Watch this before sheeting your roof with osb. Wet and dry specimens of plywood and. Oriented strand board osb or plywood can be used although plywood will provide higher nail head pull through resistance.

Sheathing type typically 15 32 inch or thicker panels are required in high wind areas. Check the nailing surface is level. Avoid this costly nailing spacing mistake duration.