There are commonly two ways full foam, and warm air insulated.
-Good- Full Foam: The manufacturer molds a thin shell into its seating form, plumbs the jets, attaches three sides of the cabinet and then pumps foam under the shell of the tub. Many of these manufactures use the foam as the structural support of the tub’s shell. This fill foam also makes finding and fixing leaks difficult as it requires the foam to be dug away from the piping. The removal of this foam also compromises the structural support of the tub’s shell.
-Better- Warm Air Insulation: The shell is formed into its seating, then the jets are plumbed and only the underside of the shell and each individual pipe is given a layer of insulating foam. This makes it easier to service the tub. Inside the cabinet the motors (pumps) generate heat over 100°. This insulates the spa like a thermal pane window. Adding Reflex Foil Wrap inside the cabinet of a tub with this design will improve insulation in very cold climate areas.
Posted in: Hot Tubs and Spas