How to Expand and Explode Foam

Expanding Foam

• 1

  Buy a can of polyurethane expanding foam at your local home improvement store. Touch n' Foam and Great Stuff are well-known brands of expanding foam.

• 2

  Take a can of expanding foam and select the area you wish to fill. The foam is created as the two chemicals in the can combine.

• 3

  Hold the can 10 inches from your desired target and spray. If you are filling a gap, only fill in a third. As you spray, the foam will automatically expand, filling in any desired crack, or creating any shape that you wish. Once the foam has expanded, it will harden.

Exploding Foam

• 4

  Place the can of foam in a well-cleared outdoor space. Ensure that there are no flammable objects near the can, and that you are not near a wooded area.

• 5

  Expose the can to an intense amount of heat. An intense amount of heat can be defined as fire, strong and direct sunlight or even a bullet. As the expanding foam is stored in a high pressured container, the chemicals inside will react to the heat and explode.

• 6

  Stand back and watch the reaction.