How long should roof shingle nails be?

Proper Nail Application For Asphalt Shingles Nails should have a minimum, nominal shank diameter of 11- or 12-gauge, and a minimum head diameter of three-eighths of an inch. The length of each nail must be a minimum of 1¼ inches long, and for roof-overs, Atlas recommends a nail length of at least 2 inches.

What size nails do you use for shingles?

If you’re using typical architectural shingles and 3/8-inch-thick sheathing, you’ll need 1‐inch nails. If your building codes require thicker sheathing, you’ll need 1 ¼-inch nails. When installing thicker shingles, you may need to use a longer nail in order to penetrate the OSB beneath fully.

What size nails do roofers use?

Roofing nails should be round-headed, sharp-pointed 11-gauge galvanized steel or the equivalent corrosion-resistant roofing nails. Nail head sizes recommended are 3/8-inch to 7/16-inch diameter. Nail heads should be low profile, smooth and flat. Nails should comply with ASTM F1667, Type I, Style 20.

What are the best nails for shingles?

Stainless steel nails are good for fastening tiles and slate. Galvanized roofing nails, or steel nails coated in zinc, are perfect for asphalt shingles, and they hold up well against rust. Aluminum nails should be used for surfaces made out of metal and siding.

How long should nails be for 2 layers of shingles?

Layers. If you are putting a layer of asphalt shingles over an existing layer of asphalt shingles on to a 3/4-inch deck or a plank deck then you should be using 1 1/2-inch nails. If your decking is less than 3/4 inch then a 1 1/2-inch nail will suffice.

Can I use 1 inch roofing nails?

In southern parts of the country where they don’t need to deal with snow loads, it’s acceptable to use 3/8″ roof sheathing, which means it’s also acceptable to use 1″ roofing nails on asphalt shingles. A 1″ nail will fully penetrate through 3/8″ roof sheathing, but it won’t fully penetrate 1/2″ sheathing.

How many nails do I need for 3 tab shingles?

A three-tab shingle requires 4 nails per shingle. The amount of tabs does not change the number of nails required to secure the shingle. A 4-tab shingle of the same length will also require 4 nails – the same goes for architectural shingles.

When installing three tab shingles No nails should be placed within how many inches of a valley?

minimum of 12″. Fasten a minimum of 6″ away from center line on each side of valley.