How to Repair Cracks in an Acrylic Spa

One of the main advantages of owning an acrylic spa is that its smooth, glossy finish gives the spa shell surface an eye-appealing sheen that is easy to clean.
Cracks may threaten the glossy finish of your spa.Cracks may threaten the glossy finish of your spa.
Typically, a spa consists of two layers sandwiched together; the shell surface, in this case acrylic, and its understructure, most commonly consisting of a combination of fiberglass and additives. While these two materials should grant structural integrity and longevity, cracks are always a possibility. Thankfully, should cracks appear in your spa, there are some strategies to repair them and restore the glossy finish.

Step 1

Clean the acrylic tub thoroughly, concentrating on the areas that need to be repaired. Be sure not to leave any cleaning solution residue on the surface before repairing. Allow the tub to dry completely.

Step 2

Open the Plast-Aid Multipurpose Repair Kit and mix a sufficient amount of Plast-Aid powder and liquid using the mixing cup included in the kit. Use a mixing stick and stir well.

Step 3

Find an acrylic paint that matches the color of your spa's shell. It may take some trial and error to find the right color. Mixing a few colors may be necessary. Add the paint to the mixture.

Step 4

Scoop out the mixture onto a plastic putty knife and smear on the crack, filling it evenly. Allow the mixture to dry.

Step 5

Sand the area using the fine-grit sandpaper to make the surface even and smooth again. You should be barely able to see the crack when sanding is complete.

Things You Will Need

  • Plast-Aid Multipurpose Repair Kit
  • Artist's acrylic paints
  • Mixing cup
  • Mixing stick
  • Plastic putty knife
  • Fine-grit sandpaper

About the Author

Adrienne Farricelli has been writing for magazines, books and online publications since 2005. She specializes in canine topics, previously working for the American Animal Hospital Association and receiving certification from the Certification Council for Professional Dog Trainers. Her articles have appeared in "USA Today," "The APDT Chronicle of the Dog" and "Every Dog Magazine." She also contributed a chapter in the book " Puppy Socialization - An Insider's Guide to Dog Behavioral Fitness" by Caryl Wolff.