Both our Vinyl Deck kits offer a system using ordinary treated lumber (or any other suitable framing material) as a frame structure. Planks are held securely to the deck's under structure in a patented process using aluminum Clip-Strips, snap locks or "Z"strip attachments. Stainless steel screws are used to secure the attachments to wood, steel, or aluminum stringers. Brock Deck planks snap into the attachments leaving no exposed fasteners, while Sheerline decking utilizes interlocking flanges and also has no exposed fasteners.