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Hot tub cover insulation is reduced The insulation effect of the outdoor spa hot tub cover is a key function. If you notice that the water temperature in your tub drops rapidly and the heating system is working for a noticeable increase in time, this may be because the cover has lost its insulation.

The moisture barrier outside the foam core is the first line of defense for the spa hot tub cover, and it is responsible for preventing water vapor and moisture from entering the foam. Once the moisture barrier is damaged, moisture vapor, rain or ambient humidity from the outdoor spa hot tub can penetrate the foam core, causing the foam to gradually absorb water, causing the cover to become heavier and heavier.

Outdoor spa hot tubs are often installed in open courtyards, patios, or garden areas, lacking natural barriers to block wind forces. Strong winds can easily pass through these open areas and act directly on the tub cover, especially if the cover is partially loose or not fully closed.