Axiom Home Page Forums General Discussion The Water Cooler Docks

The only PT wood in the water would be an underwater stabilizer between two arms of a 'U' dock. All framing is mounted on top of the floatation. Now the code mandates plastic (ABS I think) covered floatation. The oldest docks have an orange styrofoam, them blue was mandated, now plastic covered (for any new construction).

For a floating dock, each material has unique benefits:

Pressure-treated lumber is affordable but requires regular maintenance and can degrade over time in water.

Aluminum is durable and corrosion-resistant, though it’s more expensive and can get hot in the sun.

Plastic, especially Fiberglass Reinforced Plastic (FRP), is low-maintenance, slip-resistant, and highly durable in marine settings.

You might find FRP platformFRP platform options worth exploring—they’re ideal for floating docks due to their strength and long-lasting performance in water.