STYROFOAM™ Brand Buoyancy Billets

A large block of lightweight, moisture-resistant STYROFOAM™ Brand Extruded Polystyrene foam ideally suited for floating structures.


  • Floating docks, rafts, boatwells and boathouses


  • Won't lose buoyancy even if punctured
  • Unaffected by salt or fresh water
  • Won't waterlog, rust or corrode
  • Resistant to damage from destructive marine growth
  • Just one cubic foot (0.03 cubic meter) of billet can float up to 55 pounds (25 kilograms)

Additional Resources

Floating Dock Installation Guide

Need to Know More?

N -

North America

E -

Europe, Middle East, Africa & India

A -

Asia Pacific

L -

Latin America



Typical Sizes in inches (cm)

Approximate Weight, lbs. (kg)

Buoyancy Force, lbs. (kg)

Buoyancy Billets


7"x20"x96" (18x51x244) and 10"x20"x96" (25x51x244)

14 (6.4), 20 (9.1)

425 (192.8), 610 (276.7)