Amateur painters generally undervalue the cleaning process. Primer and paint will not adhere to a dirty surface. Do-it-yourselfers should use a heavy-duty trisodium phosphate cleanser to remove dirt and soap scum.
Bathtubs are ill-suited for paint adhesion. They require abrasion prior to application. Otherwise, they will reject their new finishes. Do-it-yourselfers should scour the tub with 120-grit sandpaper to generate a tooth for the primer and paint to adhere to.
Bathtubs require a base coat of primer that will help to promote a durable, long-lasting finish. An acrylic latex primer is appropriate for this type of project.
Because bathtubs are subjected to a large amount of duress, they require a durable coating, capable of withstanding adversity. Appliance epoxy paint is the ideal choice for bathtubs, because it provides an attractive sheen and is resilient to weight, moisture and friction-based duress.
Acrylic latex primers and appliance epoxy paints are available in spray cans. Do-it-yourselfers may spray on the coatings if they desire. They may also utilize a paintbrush manufactured for use with water-based coatings.
Do-it-yourselfers should wait 12 hours before using the tub. This will allow the paint to dry and fully cure.