Aluminum Railing has several advantages, and pays for its self when compared to maintaining wood railing. Aluminum Rail cannot rust like Iron Railing, which allows peace of mind, and an easy to maintain rail.
Aluminum Railing products like DekPro, Westbury, Fortress AL13, and Slimline use thick aluminum posts, rails and are coated with durable paints. Posts can be attached simply, and on the surface of the deck. Brackets are mounted on the posts. Rails are cut to length as specified by installation instructions, and fastened in place using screws. Bracket covers are placed over the brackets to hid the cuts.
Other types of railings like Composite Railing, Iron Railing, and Wood Railing have their advantages, however Aluminum Railing seems to be the most popular, and gives the best look for it's price.