- 1). Wipe the cracked area with a damp rag to remove dirt. Dry thoroughly with a clean rag.
- 2). Sand the cracks with medium-grit sandpaper to remove soap residue, oils and provide the putty with a good gripping surface.
- 3). Wipe the surface with a tack cloth to remove bits and particles of sanding dust. A tack cloth is a sticky cloth that picks up and holds sanding dust.
- 4). Apply an epoxy-based putty with a flexible putty knife to fill in the cracks. Press the putty into the crack deeply. Epoxy-based putty comes in colors that will match the existing tub surround.
- 5). Allow the putty to set and harden, generally 15 to 30 minutes depending on the brand.
- 6). Sand the repair with fine-grit sandpaper to level out high spots. Immediately follow with a sanding using extra fine-grit sandpaper to smooth the patching material.
- 7). Apply wax specifically made for a tub surround to conceal the putty application. Do not use furniture or floor wax because it will cause the bathtub surface to become slippery, which is hazardous.
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