Nailing 3 4 Apa Roof Sheathing

Typical size is 4 ft x 8 ft but other sizes may also be produced.

Nailing 3 4 apa roof sheathing.

Spacer type panel edge clips may also be used for roof sheathing applications. The typical thickness range for sheathing is 3 8 to 3 4 inch. Boards used for sheathing range from those with a 4 inch face to 48 inch long plywood sheets. Cover sheathing with shingle underlayment felt to minimize roof sheathing exposure to weather unless otherwise recommended by sheathing manufacturer.

2 4 common performance categories and corresponding span ratings performance category span rating 3 8 24 0. At intermediate supports fasten panels 12 inches on center. Fasten panels 3 8 from panel edges. Roof fastening zone wind main sheathing to gable overhang velocity roof end wall framingg eaves 3 second panel 123 2 3 2 3 gust locationi fastening schedule inches on center supported panel 666 6 6 150 mphf g end and edges 3h panel field 6 4 3 4 3 supported panel 666 6 6 120 mphf g end and edges 3 panel field 12 6 4 6 4 supported panel.

Avoid roof complaints with proper framing sheathing and roofing techniques. Produced by apa the engineered wood association formerly the american plywood association in 1989. Use shingle underlayment felt conforming to astm d226 type i astm d4869 type i or astm d6757 self adhering polymer modified bitumen sheet underlayment should conform to astm d1970 or check roofing manufacturer s. Fasten roof sheathing panels properly fasten panels with a minimum of 8d common 0 131 inch by 2 1 2 inch nails spaced a maximum of 6 inches on center at supported panel ends and edges.

For panels over 1 use 8d ring shank or 10d common nails. 2 3 materials apa rated sheathing panels are produced as plywood or oriented strand board osb. Use a 10d box nail to gauge 1 8 inch spacing between panels. Apa trademarked plywood is suitable for a variety of end uses including subflooring single layer flooring wall and roof sheathing sheathing ceiling deck structural insulated panels marine applications siding webs of wood i joists concrete forming pallets industrial containers mezzanine decks and furniture.

The number of nails needed for a roof varies on multiple factors such as board face width length and roof truss spacing. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Always ensure your work site is compliant with current osha regulations. Cover roof sheathing as soon as possible with roofing felt or shingle underlayment for protection against excessive moisture.

8d ring shank nails should be used instead. Sheathing should be a minimum of 19 32 inch thick. To assure best performance follow these panel spacing and nailing recommendations for apa rated sheathing apa rated sturd i floor and apa rated siding. Commonly square edge but may be produced with tongue and groove edges.

Never attach roof sheathing with staples. Use 8d common nails for panels up to 1 thickness.