Symptoms
- Visible chip exposing the base material under the glossy finish
- Hairline crack that may leak if not sealed
- Rough or sharp edge where the surface broke
- Discoloration around the damaged spot
Likely causes
- CommonImpact damage from a dropped objectFiberglass and acrylic surfaces are thin and can chip or crack from a dropped shampoo bottle or tool.
- CommonStress cracking from age and flexingRepeated weight and temperature changes over years can create hairline cracks, especially near the drain or corners.
- PossibleInadequate support under the tubIf the tub wasn't properly supported during installation, flexing under weight can crack the surface over time.
- Less commonChemical damage from harsh cleanersSome abrasive or solvent-based cleaners can degrade the surface finish, making it more prone to chipping.
What to do
- Clean the damaged area thoroughly and let it dry completely before any repair.
- For small chips, use a fiberglass or acrylic tub repair kit, which includes filler and gel coat matched to common tub colors.
- Sand the area lightly around the chip to help the filler adhere, following the kit's instructions.
- Apply the filler per instructions, building it up slightly proud of the surface to allow for sanding.
- Once cured, sand the patch flush and apply the gel coat topcoat included in the kit.
- Buff the repaired area once fully cured to blend the sheen with the surrounding surface.
- For structural cracks that flex or feel soft underneath, do not just patch cosmetically since the underlying support may be compromised.
Tools and parts
- Sandpaper (fine grit)
- Mixing stick
- Buffing pad
Fiberglass/acrylic tub repair kitSearch: “bathtub chip repair kit matching color”
When to call a pro
Call a tub refinishing specialist for large cracks, soft or flexing spots, or if you want a seamless, professional-grade finish.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.