Acrylic bathtub small crack

Depending on where the crack/hole is, I would wonder about the support underneath the acrylic of the tub. Was the crack/hole caused by some part of the tub that was not supported getting flexed too much under regular use? If so, then I might doubt the repair kit myself. However, if the crack/hole was just due to some sharp object hitting the tub, then I suppose it will work fine. However, if it is a support issue, you might as well try the repair kit, because your other alternative is pulling the whole thing out to try to fix the lack of support, which sounds like a huge job. Just my $0.02 worth. Hope this helps.

I give mixed reviews to tub refinishing. I have had many tubs and surrounds refinished as opposed to replacing the units. Even though a good refinishing job is not cheap, usually around $300-$400, it certainly is less expensive than the labor involved in removing, framing and installing a new tub and surround. I have found a good sub-contractor for these jobs and the difference between a good long lasting job and a so-so job is in the prep. One sub I used years back did not take the time to really clean, sand and prep the surfaces before spraying the epoxy finish, had some problems and call backs within 2 years. I have a few jobs out there over 5 years old now, with no problems or complaints that my current sub has done, and done well. So I guess the moral of the story is, a refinish job can be a good long lasting solution if done properly with good materials. Side note: Don't wait until the original finish is worn to the cast iron. When rust is present, it makes refinishing more difficult and expensive.