Add Another Layer of Insulation

This floating foam thermal blanket rests directly on the water beneath your regular hot tub cover. It helps reduce heat loss, conserve energy and protect the underside of your rigid spa cover.

Foam thermal blanket floating on hot tub water

Helps Your Hot Tub Hold Its Heat

Hot water naturally loses heat through the exposed water surface. A floating thermal blanket creates an additional barrier between the heated water and the air beneath your main spa cover.

This may help reduce heater operation and make it easier for your spa to maintain its selected temperature.

Simple to Trim and Install

✓ Place the blanket flat over the surface of the spa water.

✓ Mark the outline of your hot tub shell.

✓ Trim the material with ordinary household scissors.

✓ Leave enough room around the edges for easy removal.

Trimming a foam thermal blanket to fit a hot tub

Foam thermal blanket underneath a hot tub cover

Added Protection for Your Spa Cover

The 1/8" thick blanket provides a protective layer between the spa water and the underside of your rigid cover. This helps reduce direct exposure to moisture, chemicals and ozone.

Need a custom size? Custom foam thermal blankets are also available. Call 800-876-7647 for pricing.

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Foam Thermal Blanket For Hot Tubs

Horizon Ventures