I managed put a small crack in the corner of my acrylic bathtub. Looking underneath it looks like the crack is just to the acrylic, and the fiberglass shell is still in-tact.

Is this enough to hold water? Looking online, the fiberglass does the heavy lifting - but didn't want it to start leaking! I'll repair the cracked acrylic at a later point.

  • I expect it is polyester ,not acrylic.. It would be a problem if water has already gotten into the Fiberglas. Sep 9, 2019 at 21:21
  • Hello, and welcome to Home Improvement. Without more info, all we could say was "maybe." And, you should probably take our tour so you'll know how best to participate here. Sep 10, 2019 at 0:59
  • Acrylic tubs do crack and if not sealed a blister will form and get worse and your tub can be ruined. It is very difficult to match, I have seen acrylic tubs crack because they were not properly bedded and the flex caused the crack.
    – Ed Beal
    Sep 10, 2019 at 10:16


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