No special or unique fasteners are required to fasten DensShield® Tile Backer panels in place. For wood studs: galvanized roofing nails, rust-resistant drywall screws or bugle head deck screws. Fasteners should be long enough to penetrate at least 3⁄4 (19 mm) into the wood framing members. For metal framing: a variety of rust-resistant screws can be used.