Make sure your shower is fiberglass by tapping it with your knuckle or a wooden spoon or similar item which will not damage the finish. A fiberglass unit will have a soft, hollow, non-metallic sound, and depending on where you tap it, may even seem flexible. Choose the appropriate color for the kit you will purchase. Most kits come with colorants (tinting products) to change the color of the product to match common colored fixtures, such as white, off white, or almond. Make sure the kit you buy comes complete with everything you need, or purchase these materials and tools separately. The following is a list of what your kit may contain: Polyester resin Hardener (catalyst to harden the resin) Fiberglass mesh or mat (for large or structural repairs) Colorants Sandpaper in assorted grits, from 80 grit (coarse) to 400 or 440 grit (very fine) Thickener (to stiffen the resin for vertical applications) Protective gloves resistant to the chemicals included in the kit A mixing container and stirring tool
You may want to wear a Tyvek suit when working with fiberglass, especially if you’re cutting it. Put on gloves and a respirator as well to protect yourself from the fiberglass.
