Cap fasteners are the best way to install roofing underlayment—and are often required as a part of the warranty—STINGER NailPac is the best fastener to use.

NailPac combines our 1"(25mm) collated plastic caps with 1”x .083” (25mmx2mm) full round head ring shank nails in one package. NailPac meets ASTM F1667 requirements, contains 10 reels of 200 collated plastic caps and 10 coils of 200 nails which covers approximately 25 square, and is exclusively designed for use with the STINGER CN100B or CN100 Cap Nailer.

Why use collated cap fasteners? Ours are simple to install and protect better against the elements.
-STINGER collated caps withstand UV exposure up to 10X longer than hand drive caps—that's over a year (ASTM D7869-17)
-They offer superior wind-resistance, holding on in 150 mph hurricane-force winds for 60 minutes (ASTM D3161)
-The plastic creates an effective seal on the underlayment, reducing moisture penetration

NailPac meets the standard requirements of a FORTIFIED Roof—a level of protection in the Insurance for Business & Home Safety's (IBHS) FORTIFIED Home Program. FORTIFIED stipulates that 304 Stainless Steel is required within 3,000 feet (914m) of saltwater, otherwise, you can install Electro Galvanized NailPac.