Deck Screws™ are designed for attaching rigid insulation board, single ply membrane, and wood blocking to steel and wood decks. Some sizes can also be used in concrete decks. Available sizes include No. 12, No. 14, and No. 15 diameters in carbon steel with either hex washer or Phillips-style heads. The Deck Screws™ are used in conjunction with insulation or membrane plates and can also be used with batten bar. For corrosion protection the screws are coated with Perma-Seal™ coating, a proprietary fluoropolymer, which meets the requirements of Factory Mutual Standard 4470.
