How Long Are Roofing Nails

When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails.

How long are roofing nails.

We have to use 30 mm long nails if we are installing thicker shingles like the laminated shingles cambridge xpress or cambridge xtreme 9 5. If you re applying a thin shingle to a wood surface and no other shingles are present you might be able to get by with nails that are only one and one quarter inch long. The length of the nail is the shank and the shank can also vary. The thickness of the nail is directly proportional to its length thus the longer the nail the bigger its size.

Continue reading below our video of the day nails that are longer than six inches are called pikes and they are seldom used on roofs. When using a 1 5 inch. For reroofing shingle over shingle or hip and ridge application it is necessary to use minimum 35 mm long roofing nails. Fasteners should be long enough to penetrate at least 3 4 19mm into wood decks or just through the plywood decks.

Use only zinc coated steel or aluminum 10 12 gauge barbed deformed or smooth shank roofing nails with heads 3 8 10mm to 7 16 12mm in diameter. Fasteners must be driven flush with the surface of the shingle. This adds up to an average of 320 nails or 100 square feet. The shingle warranties are very specific about the nail length and you want the right nail so they have enough holding power to resist blowing off by strong winds.

Most shingle manufactures recommend using four nails per shingle on the main area of your roof and five nails per square in the first row of roofing. The more common roof thickness is 3 4 inch decking. Roofing nails roofing nail sizes sheathing 3d box 4d box 5d box 6d box what size roofing nails composition shingles wood shakes wood shingles. Another kind of classification for roofing nails is by size.