Pavers are naturally designed to fit together without moving. Their rough edges, when placed side-by-side, create tension, locking the pavers in place. With that built-in design and the finished edge of your deck, your pavers will remain permanently placed. If you are using polymeric sand between pavers, the sand will harden like concrete, giving you extra insurance that your deck flooring won’t go anywhere. For places where you can’t edge and want to insure that your pavers won’t move, use a construction adhesive.