Is the ULTCOVER hot tub cover waterproof?

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The ULTCOVER Waterproof 600D Polyester Square Hot Tub Cover is made for hot tubs that are up to 85 inches on each side and 20 inches tall. The manufacturer describes it as waterproof, using 600D polyester fabric with a backing to shield your hot tub from rain, snow, and dust. Just keep in mind, it's best used with an insulated hard cover underneath, as it's not a standalone solution.

From our research, it seems people have mixed feelings about its long-term durability. At first, many folks found it did a good job of staying in place and protecting their hot tubs. But, some encountered issues eventually. It seems fading in direct sunlight or wear and tear within 6 to 18 months is a common concern. Its lifespan varies; some have seen it last up to two years in tougher climates. For some, this is still more cost-effective than regularly replacing pricier insulated covers.

One particular issue noted by people in really sunny places like Arizona is the undercoating has allegedly melted after a few months, which isn't great. Also, the elastic cords might fray and tear at the exit points since there aren't any grommets there. While some appreciate the warranty, others feel it's not very helpful (only one replacement in a supposed three-year warranty).

In short, the ULTCOVER might be a decent option if you're looking for an affordable cover, but do consider these experiences, especially if you live where the sun is pretty relentless. It might be wise to look into some extra sun protection or treatments to stretch out its lifespan.

Before deciding, weigh these points and maybe think about using extra protective stuff alongside this cover.