How To Fix Cracks In A Plastic Bathtub (A Step By Step Approach)

Plastic bathtubs are affordable, easy to set up, and can serve you for a significant period when used with utmost care.

The major problem with plastic bathtub is that it is prone to crack build-up if you use them without considering factors that may cause them to crack.

Would you fix the crack in your bathtub or consider replacing it? Fixing the crack(s) is viable rather than replacing it as it will cost you thousands of dollars you are not willing to spend at that moment.

Cracks in your bathtub are inevitable due to several reasons we will mention before we proceed on how to fix them.

Possible Causes Of Cracks In A Plastic Bathtub

It would be worth noting the factors that may cause your plastic bathtub to crack. The significance of this information is to help you avoid these factors from taking impact and getting worse to be fixed.

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Besides, cracks induce moisture and water to take impact which then weakens the bathtub structure. This can cause your bathtub to break into halves or molds and mildew will start forming on the structure making your bathtub unhealthy.

Here are four main reasons that can cause your plastic bathtub to crack. They include;

1. Poor Installation

Installing a bathtub without providing enough structural support can bog down, cause its integrity to weaken, and compromise the flexibility of your bathtub. Hence over time causing it to deform and cracks to start manifesting.

2. Pressure Impact

When you accidentally drop or place a heavy object and sit on your bathtub cracks and dents will start forming due to the pressure impact exerted on it.

3. Wear & Tear

Cracks can be a result of years of wear and tear which is inevitable.

4. Using Highly Abrasive Cleaners

Highly abrasive cleaners may cause harm by eroding the layer components of your bathtub which, over time, leads the bathtub’s enamel to chip off. Therefore, moisture and water can easily ruin its integrity, resulting in cracks and other damages.

Here’s How To Fix Crack In A Plastic Bathtub

If you have never fixed any cracks in your plastic or fiberglass bathtub, you do need to worry because we will guide you on each step.

Before we begin make sure you prepare your bathtub repair kit and if you do not have you can purchase one from your preferred bathtub brand.

Confirm to keep these things handy:

  • A rag
  • Putty Knife
  • Epoxy Resin
  • 240-grit wet/dry sandpaper & 120-grit sandpaper
  • Nylon-bristled paintbrush
  • A Power Drill
  • A Drill bit (¼- inch)
  • Gel enamel
  • Hairdryer (optional for quick drying)

To fix cracks in your bathtub follow our step-by-step guide below;

Step 1: Clean & Inspect Your Bathtub

Clean your bathtub and make sure you inspect where cracks are formed from the top area and around your bathtub. It would be helpful to mark the cracks to allow you to approach the straightforward when you start fixing them.

Also, ensure you remove all the debris for the adhesive bond to impede maximally. Allow the bathtub to dry for at least 24 hours before you start fixing the cracks.

Step 2: Drill A Hole

Drill a strong¼-inch hole on each side of each crack you had initially marked/located to prevent it from getting any larger.

Step 3: Start Sanding the Cracks

Take 120-grit sandpaper and use it to lightly sand down the cracks. Note, Sanding too hard could cause further damage, making it hard to fix the crack(s).

Step 4: Clean the Sanded Area

Damp the rag with water and use it to clean the sanded area to remove sand particles and all debris in the bathtub. Well, it is worth noting that the epoxy resin does not stick well to the wet surface; hence it causes the cracks to open.

Therefore, you have to wait or allow the wet sanded area to dry for about 12 hours at the maximum. Or, if you are in hurry, you can use a hairdryer to dry the wet sanded area.

Step 5: Prepare Epoxy Resin Apply

Read carefully the Epoxy resin package instructions, prepare the epoxy resin, and fill-flush the crack and holes using the putty knife. With the same putty knife use it to scrape off excess epoxy resin and leave it to cure for at least 12 hours.

Step 6: Sand Over the Cracks Again

Take 240-wet/dry grit sandpaper, soak it in water and use it to sand over the cracks once more. Then, clean the sanded area with a damp rag once more to remove the epoxy resin debris. Allow it to sit and dry for the next 12 hours for the perfect result before it comes in contact with water.

Step 7: Finish Off the Process

Finish off the process by coating the cracks by applying a light layer of gel enamel. Then, allow it to sit and dry for more than 4 hours before using and filling your bathtub with water.

After fixing the cracks using the above step-by-step guide, it would help if you care for your bathtub against risks that may cause cracks. Here’s how you can prevent it.

See Also: 4 Temporary Fixes For Cracked Bathtub (Must-Try!)

Tips To Prevent And Care For Plastic Bathtub

Good maintenance of your bathtub is essential as it prevents risks of damage and makes your bathtub last longer than expected.

Below are tips that will help you care and prevent cracks;

  • Keep heavy objects away and above the plastic bathtub as it can cause dents and cracks inside the bathtub when they hit or fall on/in it.
  • If you are interested in your decorating your bathtub, pick light-weight decorations that are also secure without sharp edges and tips.
  • To protect the enamel layer of your bathtub, we recommend using a nonabrasive and gentle cleaner. For deep cleaning, use homemade cleaners made from vinegar, lemon, essential oil, baking soda, and water.

Are Acrylic and Plastic Bathtubs the Same?

An acrylic bathtub is usually made from acrylic polymer, a plastic material that has been mixed with other resins to make it stronger. It is less expensive than cast-iron tubs and easier to maintain. They are more lightweight than cast-iron tubs, so they can be installed in any bathroom without any trouble.

Plastic bathtubs are made from hard plastic resins that have been mixed with other chemicals to make them stronger and more resistant to damage. They come in different shapes and sizes, but they all share the same properties: lightweight, easy installation, inexpensive price tag, and low maintenance cost.

Wrap Up

Using the above step-by-step guide, you can successfully fix cracks in your bathtub, save you the cost of replacing it, and prevent it from cracking beyond salvage.

Nonetheless, you should also make sure you care to maintain your bathtub by avoiding the factors that can induce cracks and dents in your bathtub.

Read More On Fixing Bathtub

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