Thermal Guardian Covers feature Virgin EPS Foam Cores
When we started selling spa covers over 20 years ago, they were flat. Quickly some of us realized that standing puddles of water were not a good thing for spa covers. Hence, the age of tapered spa covers began. For outdoor applications, we recommend a minimum of 2" of fall meaning that the center of the cover should be 2" thicker than the outer edge. This enable the cover to shed water like the roof of a house.
The 5" x 3 " tapered foam cores of the ThermalGuardian Standard and ThermalGuardian Deluxe are GUARANTEED to allow water to roll off the cover and avoid the puddles that will break your cover's expensive foam cores.
Don't get caught spending hundreds of dollars replacing your foam cores by buying a cheap 4"x3" cover that won't shed the water like our ThermalGuardian premium spa covers will.
Our foam cores are made from only virgin Expanded PolyStyrene (EPS) foam. Recycled foam is cheaper, but the virgin bead foam we use is much stronger.
EPS (Expanded Polystyrene) Insulation is a moisture resistant closed cell foam which
contains no ozone depleting CFCs or HCFCs and is 100% recyclable. It also offers the
best insulating value per dollar spent of any material available today. Additionally, its long-term
insulation value is assured since aging has absolutely no effect upon performance.