Minnesota Roof Sheathing Thickness

Fasteners shall be long enough to penetrate the roof sheathing a minimum of or through the thickness of the sheathing.

Minnesota roof sheathing thickness.

Where the roof sheathing is less than 3 4 inch 19 mm thick the. Minnesota department of labor and industry garages and the. If the spacing is greater than 1 4 install a layer of 3 8 minimum thickness apa labeled exterior grade plywood or osb over the wood planking. Roof sheathing attaches to the surface of the rafters or trusses to form the structural skin of the roof.

Is 1 2 osb okay for a standing seam roof and other roofing materials or is 5 8 preferred. The typical thickness range for sheathing is 3 8 to 3 4 inch. It spans the rafters to support the roofing and in the case of panel sheathing such as plywood or osb it acts as a diaphragm with the walls to resist horizontal loads. Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch diameter 10 mm head astm f 1667 of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 mm into the roof sheathing.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Can someone direct me to blogs or q a titles that address roof sheathing thickness. Where the roof sheathing is less than 3 4 inch thick the fasteners must penetrate through the sheathing. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.

Install a double layer of underlayment. Staples are not permitted for shingle application unless specifically noted in the manufacturer s installation instructions on the shingle package. My cabin trusses will be 24 oc and i will use either 1 2 or 5 8 osb sheathing and a standing seam metal roof. E hilton bronze member.

Never attach roof sheathing with staples. 8d ring shank nails should be used instead. The cabin is just 440 sf and is in zone 6. Wallace stine and my250r11.

Sheathing roofing and siding. Fasteners must comply with astm f 1667. Fasteners shall be of corrosion resistant metal. Roof will be fully vented.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. I do not recommend 3 8 plywood for roof sheathing installed directly on the roof. One inch nominal thickness and not less in depth than the cut end of the rafter. Fasteners for asphalt shingles shall be galvanized stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 2 67 mm shank with a minimum 3 8 inch diameter 9 5 mm head of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 1 mm into the roof sheathing.

A minimum of 3 4 inch into the roof sheathing. Sheathing should be a minimum of 19 32 inch thick. Approved wall sheathing siding roof sheathing and roof covering must be installed.