Readers ask: What Size Nail For 5/8″ Plywood For Roofing In Florida?

What size nails should I use for roof sheathing?

Step 3: 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. At intermediate supports, fasten panels 12 inches on center. In high-wind areas, more fasteners may be required.

Should nails go through plywood on roof?

Nail length Roofing nails should be long enough to penetrate the roofing material and go 19 mm into OSB, solid wood, plywood or non-veneer wood decking, or through thickness of decking, whichever is less. Some situations allow nails with less penetration above exposed soffits if extra nails are used.

Can I use framing nails for roof sheathing?

1 Answer. Roofing nails are a bad choice for attaching sheathing. The wire gauge is too small and the hardness of the nail shank is much less than a framing nail. I personally like to use 6d or 8d ring shank nails for OSB.

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Is it better to nail or screw roof sheathing?

Nails are often preferred for structural joining, including framing walls, because they are more flexible under pressure, whereas screws can snap. Nails are also called upon when securing plywood sheathing for exterior walls, installing hardwood floors, and attaching siding and roofing.

What size nails do I use for plywood?

Use a 3-16 inch-head ring shank nail to hold plywood underlayment for a subfloor in place. The nail tip must not exceed the width of the floor joist it is being driven into. House floor joists are generally about 8 to 10 inches wide, so nail length is not an issue.

How thick should roof plywood be?

Most roofs will be sheathed in plywood at least 3/8 inch thick. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Loads will vary with the pitch of the roof; the flatter the roof, the greater the load on any one section. Steeper roofs will have lighter loads per square foot.

Should I use OSB or plywood for roof?

OSB takes longer than plywood to get saturated, but also takes much longer to dry out. When used as roof sheathing, this tendency to hold moisture means it will degrade faster than plywood when exposed to chronic leaks.

Which plywood is best for roofing?

CDX is the grade of plywood most commonly used for roofing (CDX plywood means it is Construction Grade for exterior purposes).

Should roofing nails go through the roof?

It is crucial that roofing nails of the correct length were used to secure the shingles. The sharp tip of the roofing nail should pass through and extend approximately 3/8-inch past the underside of the roof sheathing.

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Do you nail down roll roofing?

In most cases you can simply overlap the sheets at the ridge using roofing cement and nails for the final piece. However if the final piece does not come down at least 8 inches past the peak, cover the peak with a 16-inch-wide strip that is embedded in cement.

How far should a nail penetrate?

Rule of Thumb #2 – Use a nail that will penetrate the item you are nailing to (not through) at least 3/4″.

Can I use roofing nails for OSB?

If you need to install new roof decking or OSB, you’ll need to nail it to the roof truss. There are fewer requirements for these nails than those used to secure shingles. Common nails, or even wood screws, may be acceptable nails for OSB roof sheathing.

Do you need ring shank nails for roof sheathing?

Improved fasteners such as ring shank nails increase the uplift resistance of the roof sheathing. Typically, 15/32-inch or thicker panels are required in high-wind areas. Oriented Strand Board (OSB) or plywood can be used, although plywood will provide higher nail head pull-through resistance.

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