Nailing 3 4 Apa Roof Sheathing

Other code approved fasteners may be used.

Nailing 3 4 apa roof sheathing. Use 8d common nails for panels up to 1 thickness. 2 4 common performance categories and corresponding span ratings performance category span rating 3 8 24 0. 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. Commonly square edge but may be produced with tongue and groove edges.

Spacer type panel edge clips may also be used for roof sheathing applications. Generally you ll need to place two nails at each location where it makes contact with a roof truss. Avoid roof complaints with proper framing sheathing and roofing techniques. Cover roof sheathing as soon as possible with roofing felt or shingle underlayment for protection against excessive moisture.

Use a 10d box nail to gauge 1 8 inch spacing between panels. Typical size is 4 ft x 8 ft but other sizes may also be produced. Fasten panels 3 8 from panel edges. For slats featuring face widths of 12 inches you will space three nails evenly apart about every 3 inches.

Always ensure your work site is compliant with current osha regulations. At intermediate supports fasten panels 12 inches on center. Produced by apa the engineered wood association formerly the american plywood association in 1989. 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.

This video may depict some work practices that do not meet current safety standards. Lumber width slats of wood used for roof sheathing are lumber boards with face widths ranging from 4 to 12 inches. 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. Apa data file form no t325d can be downloaded from apa s web site.

For panels over 1 use 8d ring shank or 10d common nails. Closing thoughts apa data file form no t325d provides updated fastener schedules for plywood and osb structural panel sheathing used for roof decks of steep slope roof assemblies. To assure best performance follow these panel spacing and nailing recommendations for apa rated sheathing apa rated sturd i floor and apa rated siding.