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Grip-Rite Flat-Head Cap Nails

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Cap Nails for Roofing Projects

If you're dealing with a roofing project, cap nails are almost certainly a must. Luckily, Lowe's carries top brands of plastic cap roofing nails to ensure long-lasting holding power for the roofing materials in your construction work.


Frequently Asked Questions


Q: What Are Cap Nails Used For?

A: Cap nails — more formally known as galvanized nails with plastic caps — are typically used for roofing projects. This type of roofing nail is quite versatile and is most frequently used to anchor tarps, foam insulation, house wrap, sheathing and other important construction materials. The nails' characteristically wide, round plastic caps also help seal out moisture while allowing for secure installation. Another perk of the design for plastic cap roofing nails is that, due to the nails' wider heads and characteristically secure attachment abilities, you typically won't need as many nails to complete your project.


If installing cap nails, you will typically need to do so with a roofing nailer designed specifically for plastic cap roofing nails. Make sure you check instructions on both your roofing nailer and chosen cap nails to ensure that they're compatible.


Q: Are Cap Nails Waterproof?

A: While not all cap nails are fully waterproof, almost all of them are manufactured to be at least water-resistant — an important feature, considering the use of cap nails specifically for roofing materials where a reliable level of endurance in the face of the elements is paramount. Usually constructed with wide plastic caps, hence the name, these roofing nails are typically designed to seal out moisture on construction projects. In addition, some variants are constructed with additional waterproofing features, such as small washers beneath the head of the nail, usually made from either plastic or rubber.