Nothing beats 2-component polyurethane foam for marine flotation and insulation applications. Single component foams take hours to cure, often shrink and leave voids. Single component foams have not been tested for flotation. The key to successful foam applications is efficient consistently trouble free operation of the dispensing equipment. Prevents over-application, saves chemical, reduces messy cleanup.
Positive safety prevents accidental discharge.
A layman can learn how in 5 minutes. When replacing or repairing a deck, foam is applied into the hull and between the stringers. In vessels under 20 feet in length, dry weight must be counter balanced with positive flotation materials which meet Coast Guard rules. Where boat modifications demand additional level flotation, foam can be dispensed through holes drilled into the deck. The foam not only provides flotation, but adds to the structural integrity of the vessel.