There are a few different ways that you can fasten fiber cement siding. You can use nails, staples, or screws. If you're using nails, you should use galvanized roofing nails that are at least 1 1/2 inches long. If you're using staples, you should use galvanized staples that are 3/4 inches long. And if you're using screws, you should use all-weather screws that are at least 2 1/2 inches long.

Fiber cement siding can be fastened a number of ways. Some people use staples, some use screws, and some use nails. I would recommend using a construction adhesive to help keep the siding in place.