If your fiberglass tub has a leak, it’s important to fix it quickly to prevent the leak from spreading. You can fix a leak by replacing the fiberglass tub liner. You can also patch the hole with fiberglass cloth and resin.
A hole in the fiberglass tub can be fixed. You just need to fill it in with a fiberglass repair kit. The kit comes with some fiberglass and a resin. Just mix the two together and apply the mixture to the hole. You’ll want to file the edges of the hole down after you apply the fiberglass resin.