The higher the R-Value, the greater the insulation effectiveness. R-Value is determined by the type of material, thickness and density. When Selecting a spa cover, take note of the weather conditions for your location. The colder the climate the thicker the cover should be. Our two pound density hot tub covers will give you the highest insulation rating equating to lower energy costs.
Our 4 inch thick replacement hot tub covers has an R-Value of 20, one of the highest available insulating values on a replacement spa cover.