How is the Hot Tub insulated?
Several spa manufactures have always insisted that the only way to insulate a spa is with “full urethane foam”. In this method all the glued plumbing within the spa is covered using a sprayed-on foam. This method was fine twenty years ago but like many materials, safer, better alternatives have been developed. Certainly urethane foam is acceptable as an insulator but more often than not it is primarily used as a structural backup. Where there is limited structural integrity, urethane foam is used as a substitution because it “holds together all the components of the spa” and compensates for a limited engineered structure. Alternates to full foam spas have been developed to address the issue of gaining access to the plumbing within the spa. H2O spas has developed its own unique insulation system that combines both Urethane foam for structural support and ROXUL insulation for ease of removal.
