Small crack in a fiberglass tub makes the unit unusable and subject to a potentially costly repair or substitution. Water will effortlessly saturate the crack and advance toward the subfloor. And this problem might be hard to treat even with the best bathtubs on the market right now like cast iron bathtubs or freestanding bathtubs.
Once there, it will aggregate, and the subfloor will begin to deteriorate. If left without repairing the fiberglass, the subfloor may clasp and need costly repairs or it should be supplanted.
Here is how you can repair small crack in fiberglass tub with moderate effort and modest cost:
Get a fiberglass tub with resin, hardener and fiberglass fabric. They come complete with for all intents and purposes everything you have to repair any fiberglass, and they are accessible at for all intents and purposes any hardware store.
Vigorously sand the area of the hole or crack with the included coarse sandpaper. Additionally sand outward to around two inches around the edge of the harmed area.
Cut three patches from the fiberglass tub that accompanies the kit using scissors. Make their sizes continuously bigger, with the biggest patch marginally smaller than the sanded area. In a shallow container, blend proportionate measures of fiberglass resin with droplets of the hardener, according to the package directions which will likewise be supplied in the kit.
While wearing latex gloves, dip and then saturate the smallest patch into the fiberglass mixture, and after that apply it to the repair area. Layer the remaining two patches, from smaller to bigger sizes, in like way.
Permit the repair to cure for a few hours or overnight. Sand the hardened fiberglass tub with coarse sandpaper, being mindful so as not to scratch the surrounding surfaces of the tub.
Apply the gel coat. Blend a suitable measure of gel coat with tiny bits of the tint until you get a nearby color match. At that point add hardener to this mixture according to package directions. Brush the gel coat on over the repair area around 1/8 of an inch thick.
You then need to cover the surface of the gel coat with plastic wrap so it will cure legitimately. Give the gel a chance to coat cure overnight, and afterward wet sand it with number 220 wet-or-dry sandpaper, to mix it in with the surrounding surface.
You can then wet sand with the finer grades to enhance the presence of the repair area. Some remaining composition in the surface is alright, particularly if it is on the bottom of the tub where some traction is preferred.