JM Refinishing is a Company with over 20 years of refinishing experience we can answer all your questions we serve New Jersey, Philadelphia, Pennsylvania and Delaware We will make your bathtub look like new. Increase home value and save time with refinishing! Bathtub refinishing works on porcelain, fiberglass, and acrylic bathtubs. A 5-year warranty is included with all fully refinished products, and our job should add 15+ years to the life of your bathtub! JM Refinishing is a business you can trust.