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Why does the acrylic spa bathtub squeak?
Why does the acrylic spa bathtub squeak?

When the water in the acrylic spa bathtub is heated to about 40°C, the acrylic surface quickly absorbs heat and expands outward. Since the supporting layer (such as fiberglass) or metal frame below it expands less, the slight displacement between the two materials will produce friction and stress release, thus forming a squeaking sound.

2025/08/07
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