Floating docks are supported by pontoons and can be made from various materials. They are self-leveling and adjustable to water depth, but can become unstable in fast-moving water. A building permit is required, and costs can vary depending on the area and size of the dock.
Floating docks are floating platforms supported by pontoons, also known as vertical poles, which are anchored to the river bed. For better support, larger floating docks sometimes feature a ramp, either fixed or roller-mounted, that rests on the ground.
Often used in private docks and marinas, swimming areas, and landing docks, floating docks can be constructed from a variety of materials, including wood and polystyrene/polyethylene combinations, modular aluminum, stainless steel, and galvanized steel. Some companies are experimenting with alternative materials, such as plastics, concrete, and fiberglass, but wood remains the material of choice because it is relatively inexpensive and easier to install and maintain. Anti-slip paint finishes and handrails can be added for added safety, and many companies now offer floating docks in a variety of colors and finishes to fit any style and decor. In water that freezes during the winter, floating docks can be easily removed to prevent structural damage.
Floating docks are self-leveling, meaning they can adjust to fluctuations in water depth, making them perfect for both inshore and open water environments. They are also great for water greater than eight feet and soft river bottoms that cannot hold permanent structures in place, as floating docks offer many options for anchoring, including cables, ramps, and movable pipes, and can be tailored to the environmental conditions of the area. Floating docks have just one major problem: They can bounce and become unstable in fast moving water, so they’re not recommended in areas where high waves are common. They also need a minimum water depth of three feet to have enough draft to float.
Due to the potential impact on marine life and coastal ecosystems, all piers require a building permit issued by local agencies and the department of fish and wildlife. In especially fragile areas, a floating dock permit can easily run into the thousands of dollars. Once a permit is obtained, floating docks can be put together from a pre-made kit for around $14 per square foot. To get an idea of the total price, it’s important to note that floating docks must be a minimum of 6 by 20 feet (1.8 by 6.1 meters) to ensure stability. A certified dock builder can help you deal with all the necessary paperwork and ensure a safe build, but you need to factor in the additional cost, which can be up to double the price of a do-it-yourselfer.
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