Osb Roof Nailing Pattern

Increase the uplift resistance of the roof sheathing.

Osb roof nailing pattern.

Nailing schedules for wood structural panel roof sheathing plywood and oriented strand board osb. The proper way to install osb. 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. And osb structural panel sheathing used for roof decks of steep slope roof assemblies.

Allow for expansion osb panels can swell slightly so leave a 1 8 inch gap between. This way i don t get chewed out by the building inspector when they show up to inspect that particular. 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. Ventilate the roof according to current building codes.

Oriented strand board osb or plywood can be used although plywood will provide higher nail head pull through resistance. These schedules were calculated to provide resistance to wind uplift pressure as required by most codes. 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. 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.

Some brands of osb come with nailing patterns which make it simple to hit the studs when nailing in the plane. When nailing shingles proper penetration into the roof deck is essential to ensure the nail and shingle remain secure. Check the nailing surface is level. Recommendations were developed through engineering analysis and by full scale laboratory testing.

Sheathing type typically 15 32 inch or thicker panels are required in high wind areas. Properly fasten panels including fastening and spacing hints. Wet and dry specimens of plywood and. Use panels rated as exposure 1 or better.

I like to give them a call about any new nailing schedules that i m uncertain about. 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. Watch this before sheeting your roof with osb.