You should use one-quarter-inch nails for a standard-thickness shingle, and one-half-inch nails for special-thick shingles.
How long should be roofing nails for second layer?
Use galvanized roofing nails long enough to fully penetrate the sheathing, typically 1-1/2 inches for a second roof and 1 3/4 inches for a third. Nesting each new row below an existing one keeps the new nails 2 inches below the existing, which will help minimize any splitting of the sheathing.
What size roofing nails should I use?
The International Building Code requires that roofing nails have a minimum 12-gauge shank and a 3/8-inch diameter head.
How long should a roofing nail be?
Typically, a roofing nail measures anywhere from 1 to 2 inches. A roofing nail should be long enough to penetrate the shingle and then as the plywood or OSB decking beneath by at least 3/4 of an inch. The sheathing thickness can vary, so you may need longer nails depending on the decking used.
What size nails should I use for second layer of shingles Related Questions
Is 2 layers of shingles OK?
As mentioned above, homeowners are legally limited to two layer of roof shingles. Therefore, if you already have two layers, you’ll need a full tear-off. Additionally, if your roof is severely damaged, it likely won’t be able to support the weight of a reroof and will need to be torn off.
Can a roofing nail be too long?
Can Roofing Nails Be Too Long? A nail that is 3-inches (or longer) could poke through the decking and protrude through the attic ceiling.
How many nails do I need for 2 squares of shingles?
Generally, you should use four nails per shingle in the field of the roof, and 5 nails per starter shingle. For regular three-tab shingles, this would require 320 nails per square for field shingles.
What is the nail spacing for roof sheeting?
“The nails should be placed no more than 6 inches apart and fastened 3/8 inch from the sheathing panel ends and edges,” says Nora Robinson of B&M Roofing in Long Beach, Miss. And if you live in a particularly windy area, ”a few extra nails must be used for added support,” adds to home remodeler Joseph Scaduto.
Is it better to hand nail shingles?
What Does the Shingle Manufacturer Say? Roofing manufacturers have determined that hand-nailing shingles and using a nail gun are both valid methods of installing shingles, so it is not a reflection on your roofer’s work quality level if they choose one over the other.
What is improper nailing of shingles?
Too much pressure drives the nails too far in, resulting in nail heads that punch right through the shingle mat. This results in shingles that can be easily torn off by the wind. Overdriven nails may also void your roofing warranty. The other extreme is high nailing, or what can be called as “under-driven” nails.
Should nails be exposed on a roof?
Ideally, you should never see the nails on your roof. Properly installed nails should be flush to the shingle they are inserted into and covered by the shingle above them. The ensures that they are secure and unseen.
What length of nail for asphalt shingles?
For attaching asphalt shingles to standard decking, nails can range in length from 1 inch to 2 inches. But some applications may require longer nails up to 6 inches long. Those longer nails aren’t likely to be needed for residential roofing, and, as a result, are difficult to find in local roofing supply stores.
Do you overlap roofing felt?
The basic rule is that roofing felt should overlap at least 2 inches over the lower felt course. This creates a secondary barrier to wick water away from the shingles and the roof sheathing below. It also provides redundancy to the roof edges.
Do you nail shingles in the tar strip?
Because the thickness, weight, and shape of shingles vary, manufacturer’s instructions vary slightly. But virtually all manufacturers agree that nails should be installed below the adhesive strip.
What causes nails to pull through shingles?
When the temperature changes, expansion and contraction can cause the nails to pop up and lift the shingles. You should also make sure your roof is adequately ventilated. Other causes of nail pops can be that the shingles were not nailed tightly when the roof was installed.
Do you need extra rest with shingles?
Rest is critical when you have shingles. According to the American Academy of Dermatology, the right self-care, which includes plenty of rest, can ease discomfort. This is especially true if you develop postherpetic neuralgia (PHN), which is ongoing pain after a shingles rash goes away, according to the NIA .
What is one of the drawbacks to adding second layer of roofing over first?
One drawback of adding a second layer of roofing over the first is the inability to inspect the roof decking for damage, potentially leading to undetected issues that could worsen over time.
Do roofers put new shingles over old ones?
If conditions are right, new shingles laid over old ones can be just as attractive and durable as shingles laid on bare sheathing. Installation is easier than for a tear-off job, since you can use the existing shingles as guides for laying the new ones.
What is the best roofing nail?
Galvanized Steel (Best Choice) For all these reasons, galvanized steel is the best roofing nail material and one of the most popular choices for certified roofers that back their work with a reliable warranty.
Why do roofing nails have large heads?
Roofing nails: Have a wide nail head to keep house wrap, sheathing and roofing felt in place. More commonly found as ring shank nails, they sometimes will have twisted shafts for increased holding power. Short and stocky roofing nails are galvanized to resist corrosion while keeping shingles in place.