How do you repair cracks on fiberglass steps in a vinyl inground pool?
Drain pool water below below cracked step. Dry the step. Use #80 sandpaper to rough up area. Use a fiberglass resin repair kit from an autoparts store, follow directions on kit. Apply 2 or 3 layers of resin & cloth. Boat repair shops have tubes of color you can add to the resin to color it. Let dry @ 4to 5 hrs. before refilling. This procedure is never going to look like new, but it works and saves lots of $$$$.