How to Make Boat Pontoons Out of Styrofoam

Written by anne kinsey Google
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How to Make Boat Pontoons Out of Styrofoam
Pontoons provide family fun on the water. (pontoon tour image by Thomas Tanner from

Pontoons, flat boats featuring comfortable seating and relatively roomy floor space, are like living rooms on water. Providing many of the comforts of home, they are ideal for small gatherings or for a luxurious day of relaxing on the water. If your child has a fascination with pontoons or has become an enthusiast after the latest family vacation, help her to remember the good times by making a styrofoam pontoon that she can play with in the family pool, bathtub or even the kitchen sink.

Skill level:

Things you need

  • Styrofoam cooler
  • Pen
  • Utility knife
  • Plastic soap dishes
  • Hot glue
  • Spray primer
  • Craft paint
  • Acrylic finishing spray

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  1. 1

    Trace a rectangular shape onto the side of your styrofoam cooler using your pen. The rectangle can be as large or as small as you want your pontoon to be, but a good rule of thumb is about 10 x 12 inches.

  2. 2

    Cut your rectangular shape out from the styrofoam cooler using your utility knife. Only adults should work with utility knives.

  3. 3

    Place your plastic soap dishes face down on the perimeter of the styrofoam rectangle to form the bench seating on the pontoon boat. Use hot glue to secure, ensuring that only adults are handling the glue. Because plastic soap dishes are lightweight, your pontoon should still float easily.

  4. 4

    Spray the pontoon with spray primer in a well-ventilated area, away from children.

  5. 5

    Paint the pontoon using craft paints. Children can get creative by using their favourite colours and painting on details like steering wheels, motors or even people. Allow the paint to dry.

  6. 6

    Spray the finished pontoon with two coats of acrylic sealing spray, ensuring that only adults are handling the spray. Once the two coats of sealer have dried, the toy pontoon is ready for water play.

Tips and warnings

  • Clean the pontoon boat using a mild detergent and water.
  • Always work in a well-ventilated area and never allow children to use hazardous craft materials.
  • Don't use metal soap dishes because they are heavier than plastic and will cause your pontoon to sink.

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