Roofing nails are critical in ensuring the waterproofness and protection of your roof. Their length should extend about 3/8 inch past the bottom of the roof sheathing. You can determine the length by inspecting your old nails or by consulting a roofing contractor. In general, nails should be no longer than 19mm. Here are some tips to help you choose the right length. And remember to check the nails for proper spacing before they’re driven into the roof.
When estimating the number of nails you’ll need, keep in mind that nail lengths vary according to your shingle and roof coverage. You’ll need fewer nails if you have a higher coverage. For example, Cambridge(tm) shingles require 240 nails per square. The same applies if you are using High Wind Application shingles. In either case, make sure the nails are placed at least two inches apart to prevent any gapping.
Another factor to consider when choosing the right size nails is the head diameter. A 3/8-inch nail will expose more of the head when used in standard nailing locations. Likewise, ring shank nails have stronger threads than smooth ones, making them better for a wind-resistant roof. If you’re using felt underlayment, you should opt for square cap nails. These nails have a square head, a ring shank, or a coiled shank.
As a rule of thumb, roofing nails should be driven so that the head is tightly against the shingle. You should avoid overdriving or underdriving nails, as either of these could cause a split or cut in the shingle. If this isn’t possible, you can remove the nail, tap it down, and fix it with asphalt roof cement. If you’re still not satisfied with the results, consider replacing the entire shingle.
If you’re a roofing contractor, you may want to purchase your nails in bulk and save money. Building codes are almost the same in all 50 states, and the only difference between the two is the thickness of the roof deck. A roof that has visible nail heads isn’t made to last and is probably not worth the money and hassle. You can also get roofing nails by purchasing them online. You can also buy them in your local home improvement store or big box retailer.
While roofing nails should not be a substitute for screws, they are often an excellent choice for a fast, effective method of fixing shingles. Unlike staples, nails are stronger and hold shingles securely. For added security, you should use ring roofing nails instead of screws. Roofing nails should be at least twelve gauge thick and hot-dipped galvanized steel. In addition to the thickness of the shingles, the length of the nails should match the thickness of the sheathing and shingles.
When re-roofing, the choice of nails is crucial. There are three basic types of nails, each with different advantages and disadvantages. The first type is generally more costly and requires a special care. Another option is stainless steel roofing nails. While stainless steel is stronger than aluminum, it’s not as durable as the other two. You should also make sure you check the building codes for your area. If you’re in a coastal area, it’s best to use a stainless steel nail.