
Roofing or clout nails are usually shorter and thicker nails with a large, flat head for attaching sheet materials to sheets or wooden frames. Applications for this type of nail includes fastening sheet metal to wood, roofing felt, or shingles. Roofing nails come in a variety of sizes and are particularly sharp so that the material being driven into is not broken. Different forms of roofing nails include aluminum nails, good for metal roofs and shingles but not chemical or salty environments, stainless steel, and galvanized nails for longevity and rust resistance.