The pros and cons of an aluminum boat dock need to be considered before you decide whether to build one. These docks are preferred by many boat owners over traditional wood docks because they are lightweight, easy to assemble and require minimal maintenance once installed. Usually available in factory made, pre-fabricated pieces that require only a final assembling, aluminum docks often come with a salt-resistant surface coating that also deflects heat. Because of their light weight and the ease with which they can be moved in and out of water, aluminum docks are widely used for making floating docks. On the flipside, aluminum docks do have a higher initial cost, yet this can be offset by their requiring relatively little maintenance. There is also an increased possibility of scratches and dents on the boat surface if the pieces and joints are not welded smoothly.