How to Repair a Crack in a Plastic Shower Stall

Plastic shower stalls are usually made of fiberglass resin or from polystyrene. Although plastic is durable and long-lasting, it is possible to crack the stall. If you decide to replace your shower stall, expect to spend a good amount of money doing so. However, as an alternative to replacing a shower stall, you can purchase a fiberglass patch kit and patch the crack. This is cost-effective and will take less time than removing and installing a new stall.

Step 1

Add a cup of white distilled vinegar to a gallon of water and wipe the shower stall down with the solution. This will break down any oil buildup. Wipe the surface of the shower down with a clean, dry towel.

Step 2

Create a V-groove over the crack by running the edge of a file across the crack. The V-groove should run approximately half the depth of the crack.

Step 3

Blend the fiberglass filler with the catalyst and mix it in a container with the mixing stick supplied with the fiberglass kit.

Step 4

Apply the fiberglass filler over the V-groove with the mixing stick. When completed, the fiberglass filler should rest above the surface of the plastic tub. Allow at least 24 hours drying time.

Step 5

Sand the fiberglass filler flush with the surface of the shower with an orbital sander equipped with a 1,000-grit sandpaper. When completed, the fiberglass should rest level with the surface of the shower.