Galvanized roofing nails, also called as clout nails feature disproportionately large flat or umbrella shaped heads and short shaft, sometimes with rubber, plastic or metal washer to prevent water leaking. The diamond points of nails are sharp enough for penetrating the wood without any damages. Meanwhile, the roofing nails are electro or hot dipped galvanized - that is, coated with zinc to avoid rust.

As its name suggests, roofing nails are designed for roof installation, for example:

• Fasten asphalt shingles, felt paper, insulation board or metal sheet.
• Install roofing felt for waterproofing.
• Attach roof tiles.
• Hold fiber board in position.