Things You'll Need
Porcelain repair kit
American Standard makes Americast Tubs. The Americast tub is a lightweight alternative to cast iron. The top surface is a glossy porcelain finish, and, over time, the finish may become scratched, cracked, or chipped. This may be due to use of abrasive cleaners or items dropped in the tub. After repair, the porcelain surface scratches, chips, and cracks will not be noticeable, and the finish will be the same as the rest of the tub.
Call American Standard customer service at 800-442-1902, order the repair kit that is your specific tub color and model.
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Remove any loose porcelain with a putty knife while wearing gloves. Clean the damaged area with a cotton ball soaked in acetone, and allow the acetone to dry.
Shake the filler bottle; squeeze a small amount of filler onto a putty knife. Press the filler into the damaged area, slightly overlapping into the undamaged area. Allow the repair to dry for 20 minutes.
Shake the glaze bottle; apply the glaze with a small paintbrush in light coats, until you achieve a virtually seamless repair. Allow each coat to dry before reapplying.
Porcelain chips can be very sharp, wear gloves to protect your hands.