Proper Florida Roof Nailing 8d

8d nails shall be a minimum of 0 113 inch in diameter and shall.

Proper florida roof nailing 8d.

For existing nails regardless of head shape or head diameter. Deformed shank i e ring or screw shank nails are required near ridges gables and eaves in areas with design wind speeds over 110 mph 3 second gust but it is rec. Fasten roof sheathing panels properly. In high wind areas more fasteners may be required.

Currently prescribed 8d common nails would only meet allowable design uplift pressures for some limited roof conditions roof heights and only up to wind speeds of 120 mph said the team in their code change proposal. 8d nails shall be a minimum of 0 113 inch 2 9 mm in diameter and shall be a minimum of 2 1 4 inch 57 mm long to qualify for the provisions of this section for existing nails regardless of head shape or head diameter. Be a minimum of 2 1 4 inch long to qualify for the provisions of this section. Add 8d ring shank nails so that the maximum spacing between existing and added nails is 6 along intermediate roof framing members in all areas inside the 4 perimeter.

Your contractor must fill out and sign an affidavit stating that the roof deck upgrade requirements have been met and submit it to the local building department as part of the requirements for a final roof inspection. In the florida team s testing and other studies 8d ring shank nails at 6 inches o c. 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. An 8d nail 2 5 inches long is the minimum size nail to use for fastening sheathing panels.

The specific nailing requirements are contained in the following chart. Accordance with section 706 7 1 1 or 706 7 1 2 as appropriate for the existing. Full round heads are recommended to avoid head pull through. For site built single family residential structures the fastening shall be in accordance with section r908 7 1 1 or r908 7 1 2 as appropriate for the existing construction.

The 8d gun nails that the roofers are using are 2 3 8 if that nail measured 2 7 8 or more it would likely be an 8d nail. However generally speaking in all areas of florida if the existing roof decking is fastened with either staples or 6d nails the entire roof deck will need to be re nailed with 8d round head ring shank nails spaced no greater than 6 inches on center. If the design wind speed for your area is less than 120 mph add 8d ring shank nails at 6 spacing along all the intermediate roof structure members within 4 of the edges and ridges of the roof. An 8d nail is 2 5 long and protrudes though the roof sheathing a little less than 2 as shown below.

An 8d nail 2 5 inches long is the minimum size nail to use for fastening sheathing panels. Have shown an uplift capacity of 292 psf while ordinary 8d common nails provide only 126 psf of uplift capacity.