How to Fix a Crack in a Fiberglass Tub

If you are having trouble finding the best way to fix a crack in a fiberglass tub, you will be glad to know that there are a number of ways you can repair a crack in a fiberglass tub. There are hairline cracks, stress cracks, spider cracks, and bonded rubber cracks.

Hairline cracks

Hairline cracks are common in fiberglass bathtubs. They develop as a result of frequent use. In addition, they may form due to insufficient support, harsh cleaning materials, or heavy objects dropping on the tub. Luckily, there are several techniques to fix hairline cracks.

The first step is to clean the area. Use a household cleaner to remove dirt and oils from the surface. Once the area is clean, apply a coat of epoxy. This should protect the tub from water damage.

Next, use a putty knife to scrape away any bubbles that have formed. Using a fiberglass bonding agent will also help. Apply the bonding agent with a small paintbrush. Wait for it to dry.

After it has dried, you can then start applying the filler. It should match the surface of the surrounding bathtub. You can also use a sanding tool to widen the crack. However, do not oversand. Sanding too hard can cause the repair to fail.

white fiberglass tub
Photo by Krystal Black on Unsplash

Finally, buff the area to restore the glossy finish. Buffing will also remove any traces of dirt.

If you have a larger crack, you may need to inject foam into the crack to strengthen the material. The process can take several minutes to set up.

While the process may seem tedious, it is relatively easy to do. You can find kits at local hardware stores or online. Typically, the cost is around $50. Depending on the size of the crack, you can expect to pay more.

If you are unsure which kit is right for you, check with your local home improvement store. Many of these kits come with a brush, adhesive, and fiberglass filler.

Stress cracks

If you have a fiberglass bathtub, you may have noticed a hairline crack developing on the tub. These cracks are usually small and easy to repair, but larger holes can cause leaks. In some cases, a crack can extend deeper into the laminate. It is important to know how to repair stress cracks in fiberglass tubs.

Fiberglass is a very durable material, but it cannot withstand heavy punishment. Depending on the size of the crack, you may only need a little resin to fill it.

You can refinish the fiberglass tub to hide the crack. This is a relatively inexpensive solution. However, you will want to make sure that you are using quality materials. Refinishing will add years to the life of your tub.

To start the process, remove any debris from the crack. Use a piece of cloth to wipe away any dirt or dust. Once the area is clean, you can use sandpaper to rough up the area. Sanding the crack will help the adhesives and chemicals in your repair kit to stick better.

After you have finished sanding the crack, you can apply an epoxy mixture. Epoxy can be applied to the top of the crack, or it can be sanded down to a smooth finish. Before you begin, be sure to read the instructions and use the proper technique.

Another option is to use a sealer to protect the repair from harsh cleaners. A sealer will also protect the materials used to fill the crack.

The best way to get a professional refinishing job is to call a company that specializes in the process. Many times, a refinishing company can recommend the correct cleaners for your particular situation.

Spider cracks

When you look at your bathtub, you may notice some chips and cracks. These can be a sign of structural problems with your fiberglass tub. If left unfixed, they can increase in size and lead to leaks. Luckily, fixing these cracks isn’t difficult. You just need a little bit of know-how and some simple tools.

First, clean the area with a sponge. This will remove any dirt or debris from the surface of the bathtub. Then, sand the area with a piece of cloth. Once this has been done, rinse the area with clean water.

Next, use a putty knife to apply a layer of fiberglass adhesive, or bonding agent. This should be a minimum of one inch long. Leave it to dry for at least a few hours.

After the adhesive has dried, spread a layer of fiberglass filler over the crack. Make sure it is the same thickness as the rest of the tub. Do not sand the area too heavily or you will ruin your fiberglass filler job.

If you have a larger crack, you may want to add some two-component foam. This will strengthen the weaker parts of your tub. It also helps create a solid foundation.

Depending on the size of your crack, you will need to either sand the area down or use a fiberglass mesh. This will help the adhesive stick better.

A simple epoxy kit can also fix minor damage. You can buy one at a home improvement store. To finish the repair, you will need a cloth and a lint-free rag. Finally, polish the area to make the repaired area blend into the bathtub.

In addition, it is a good idea to apply a sealer to protect the area. This will keep moisture from causing further damage.

Bonded rubber

If you have a fiberglass tub with a crack in the wall, you might think that you need to replace it with a new one. However, there are ways to repair the crack without replacing the whole thing. The process is pretty straightforward and will not cost much.

First, clean the area. Use a household cleaner to remove any debris from the surface. Be careful not to damage the fiberglass.

Next, apply a sealer. A good sealer will protect the materials from scratches and stains. Once it is dry, you can begin the actual repair.

Using a sanding cloth or brush to sand the area around the crack is also a good idea. This will help the adhesive stick better and make the job easier.

If you are unable to repair the crack yourself, you may need to call a professional. This is especially true if the crack is large or has been caused by moisture.

The best way to fix a crack in a fiberglass tub is to use a good repair kit. These kits contain the tools and chemicals you need to repair the damaged area. They will also tell you how to mix the appropriate resins.

white fiberglass bathtub
Photo by Riley Crawford on Unsplash

Another option is to repair the crack with epoxy paint. However, you need to apply two or three coats of the epoxy. You will then have to buff the finished product for a shiny finish.

If you have a small crack, you may want to try Bonded Rubber. It is an adhesive that adheres to most surfaces. It works similar to Flex Seal.

However, Flex Seal is only available on the interior side of a bathtub, so you can’t use it to repair a crack on the exterior of your tub.

Acrylic tubs aren’t as flexible as fiberglass

If you are looking for a new bathtub for your home, you may want to consider whether acrylic tubs or fiberglass tubs are the best option for you. While both are affordable, acrylic tubs can be more durable and offer a more customized look. Whether you are a fan of sleek modern looks or more elegant and classy styles, there is a bathtub to match your needs.

Acrylic is a type of plastic made from petrochemicals, dyes, fillers and stabilizers. It is a non-porous material and requires less maintenance than other types of tubs.

Fiberglass is a lightweight material that is made from small strands of glass woven together. It is molded into tub shapes and then coated with a resin gel coat to ensure it stays smooth. These materials are cheaper to purchase and maintain, and they are easy to clean.

On the downside, fiberglass tubs can be warped or scratched, and their topcoat will wear off sooner than with acrylic. They also tend to crack more often.

Acrylic tubs can be more expensive than fiberglass tubs, but they are also a great value. Depending on the size and features of your tub, they are available in a wide range of colors, shapes and textures.

Both materials are durable, but acrylic is easier to maintain. You can scrub acrylic baths with a simple cleaner and they’re less prone to chipping than fiberglass. Also, acrylic doesn’t yellow as easily as fiberglass.

Acrylic tubs are more expensive than fiberglass, but they are also more durable and easier to repair. This makes them a good choice for homeowners. However, they are more prone to bending and warping if they aren’t installed correctly.