How to Repair a Fiberglass Tub

How to Repair a Fiberglass Tub

Since modern homes take advantage of many benefits of updated manufacturing and materials, they generally consist of fiberglass or acrylic bathtubs rather than traditional porcelain-coated cast iron or stainless steel. Of course, everyone loves how affordable, attractive and durable these tubs are, making them fairly common in most modern homes.

However, there are general problems associated with using this material as it is prone to cracking and pitting over time, affecting the overall quality.

If your fiberglass shower or bathtub has been accidentally damaged, repair kits are available for both. But you can’t simply go out and buy these items like some other things that might not be as important.

These kits aren’t cheap, so make sure to factor the cost into the decision of whether you want to spend this money on repairs or not.

What should we keep in mind when repairing a glass tub?

Repairing a crack or hole in your fiberglass bathtub. Still, you need to make sure that you plan it out accordingly because you will have to allow any patches or filler to dry after application in-between steps before continuing. Ideally, you should start the repair job early in the morning and complete small parts of it at various points throughout your day.

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Things to do first

Assessing the damage is the first step to determining which tub or shower restoration method is needed. Over time, heavy use can lead to surface chipping and cracking on fiberglass, acrylic and other surfaces, especially if they’re not adequately supported.

Additionally, suppose something heavy falls on the surface of your bathroom. It may also leave a large crack or even a substantial hole, especially if you don’t have adequate insurance coverage in place.

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These signs may indicate a deeper problem with the foundation rather than just surface damage. A professional should take care of any underlying problems that are not immediately noticeable before performing a refinishing project on the main feature itself rather than hoping it will hold its value for years.

How to Repair a Fiberglass tub

Here are the most important tools which we need in this project

  • Protective gear (goggles, respirator or mask, and gloves)
  • Drill
  • 80-grit sanding paper
  • Fine grit sanding paper
  • Cellophane tape
  • Rotary tool
  • Two-component foam
  • Fiberglass repair kit
  • Fiberglass cloth/mesh

Step 1. Prepare the area of work.

Clean the area with cleaner and a damp sponge before applying the glazing compound. Be sure to remove oils, soap scum, staining agents, or any other debris that may interfere with the application.

Step 2. Drill as you want to be needed.

If you need more support while soaking in the tub, try having two people hold up your arms instead of having one person help you from a kneeling position. To prevent future problems with your bathtub’s support system, try drilling small holes around the tub and adding foam. If you are experiencing a crack in your tub, flush it out with water and caulk it.

To fix the problem permanently, use sandpaper to grind an angle on the crack for about 1-2 inches.

Step 3. You can add two components of foams. 

To get the most support possible, use two-component foam to fill in the holes you drilled. It only takes a few minutes for this foam product to dry and create a hard rock base.

Step 3. The patch is suitable for this job: apply a patch 

To repair a hole or crack in your wall, you may need to apply a flexible fiberglass mesh over the damaged section. Then, use a hot glue gun or other adhesive to affix it onto the area around the crack.

More than one layer can be necessary for intense cracks in your drywall and holes that are too large to fill with just one mesh layer.

Step 3. Mix the filler

While wearing gloves, carefully measure the resin and hardener for your tub repair according to the instructions on your tub repair kit. Add colorant if you wish, and stir until it is well combined.

Use the provided mixing stick and tray to mix this thoroughly in a plastic container which should be placed atop a piece of cardboard or paper towel to avoid leaving an unsightly stain if it spills.

Step 4. Now repair the chip, hole, or crack

Apply the mixture over the area with a trowel to fill in the gaping hole or crack in the fiberglass. Take care to spread it back evenly and thoroughly. Don’t be scared by having to pile it all in there just yet, because you will be sanding it down later.

Step 5. Take the to set mixture properly. 

Make sure the mixture has been set before putting a layer of sandpaper on top. Allow it to wear in the hole for at least a couple of hours, but not too long because you want your object to be friendly and smooth, and be careful not to rub off all the edges.

Step 6.Refinish the area 

Use the finishing polish to complete the final touch and make sure the hole blends into the tub.

How to repair a fiberglass pan

If you’re repairing the floor of the tub, the method depends because smaller pits or cracks will usually be patched using the same way as larger holes.

However, it’s less complicated to reinforce larger areas to patch in on fiberglass tub repair job over replacing it with another tub panel, making it possible to fix weak anchor points and patches using duct tape and epoxy on fiberglass form securing and improving others.

Spread epoxy onto the plywood. Place it on top of the crack and apply pressure from the exposed side of the pan.

Apply the upper layer of epoxy to the exposed surface and let it dry. Once it is dried, sand it down using sandpaper.

How do we take care of our fiberglass tub?

One way to extend the life of your bathtub is by keeping it clean. Mild soap should be used to mop up any messes present, and baking soda in water can be used as a cleaning product that won’t harm the finish on your tub.

Do not use abrasive cleaning products because these will leave behind scratches and can even potentially wear away protective coatings on the surface.

Keeping your fiberglass bathtub sparkling doesn’t have to be complicated. Many people overlook the possibility of giving their tub a thorough cleaning, but all you need is soap and water in most cases.

To prevent the buildup of timescale, you might consider giving it a polish now and then using automotive products designed with fiberglass tubs. If you choose to wax your bathtub, avoid using those made for marble and other porous materials because this poses a safety hazard when in use due to slipping risks.

Conclusion: How to Repair a Fiberglass Tub

I hope this article proved to be helpful to you in understanding what steps are needed to repair a fiberglass tub or shower. Clears away any doubt you have about improving your fiberglass tub or shower.


Can we repair our fiberglass tub?

Minor Dents & Cracks in Fiberglass Tubs. No matter how deep the crack or how pronounced, the dent is, fixing it is relatively easy and requires little more than a few commonly found household supplies you can get yourself to complete this repair.

Using a basic epoxy kit with a few essential items, repairing a fiberglass tub takes as little as one day, most of that time spent as the compound dries.

How do we verify that the tub is acrylic or fiberglass?

Differentiate. Look around the edges of your tub to see if it is smooth. If it feels softer, this could indicate that it is acrylic. Acrylic tubs are typically available in a more excellent array of colors than fiberglass.

While fiberglass tubs come in white or off-white, this material can sometimes have a frosted look like an ice sculpture. Acrylic and fiberglass can feel warm to the touch, but acrylic tends to feel warmer overall versus the more relaxed feeling you may get from a fiberglass tub.

How a fiberglass tub crack 

Main cause. Fiberglass is very pliable and susceptible to damage if it isn’t properly reinforced. When overly stressed, cracks tend to form or become more pronounced in the material. Heavy objects are a common cause of such damage if they’re dropped onto a bathtub’s surface.

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