Is your tub acrylic or fiberglass? Find out here!


If you’re like most people, you probably can’t tell the difference between an acrylic tub and a fiberglass tub. Many people don’t even know what the differences are! In this blog post, we will discuss the key differences between acrylic and fiberglass tubs so that you can make an informed decision about which one is best.

Is my bathtub fiberglass or acrylic?

Have you ever been unsure about whether your bathtub is made of fiberglass or acrylic? Both materials can be remarkably similar, making it difficult to tell them apart. But don’t worry—with some careful exploration and investigation, you should be able to determine the material makeup of your tub without much difficulty. So what are a few signs that will indicate if your bathtub is indeed constructed with fiberglass? Read on for more information!

Check The Color

If you’re attempting to determine the difference between fiberglass and acrylic tubs, consider their color. Fiberglass bathtubs and showers are typically white in hue while acrylic products can come in a variety of shades. Additionally, after prolonged use, it’s not uncommon for the bottom surface of a fiberglass tub to discolor or appear yellowed compared with its sides – so if this is your case, there’s an excellent chance that what you have is a fiberglass unit!

Feel The Temperature

To determine if you have an acrylic tub or a fiberglass one, simply place your hand against its surface and check to see how it feels. Generally speaking, acrylic tends to be warmer than its fiberglass counterpart. If the tub or shower wall is warm when touched by your skin then chances are you’ve got yourself an acrylic fixture – cool surfaces typically indicate that it’s made of fiberglass!

Substantial Differences in the Edges

When it comes to determining whether your bathtub or shower is constructed with fiberglass or acrylic, look closely at its edges. If they appear thin and lightweight, then chances are you have a fiberglass fixture. However thicker, sturdier edges may suggest that the tub has been made out of acrylic instead. While this won’t provide absolute certainty without something to compare it against; nevertheless, examining the edges is worth attempting as an initial step!

Push On The Side

To identify the material of your tub, you should start by ruling out metal or iron-core variants. Push firmly on the side of the bathtub – if it flexes inward and gives a bit, then it is likely composed of either acrylic or fiberglass. Fiberglass tends to feel flimsier when pressure is applied, so if this happens during testing then that’s an indication that it could be made up of that material.

However, if the tub remains steadfast and unmoving even after pressing against its sides then there’s a strong possibility that what you have in front of you is reinforced with steel and covered by porcelain/enamel coating for protection!

Use A Magnet

If you don’t know what your tub is made of, try using a magnet as a test. Hold the magnet close to the side of your tub and wait for it to be drawn toward it; if this happens, then you can narrow down its composition being cast iron. Remember that some enamel or porcelain layers may be too thick and prevent any attractive force from occurring – even with steel underneath them! Don’t worry though: If there’s no pull, simply move on to other options until you figure out what material was used in making your beloved bathtub.

Check The Weight

If your tub is not fixed in place, take the opportunity to lift it and gauge its weight. An acrylic freestanding unit usually weighs around 100 lbs on average, while fiberglass has an average of 70 lbs. On the other hand, if you find yourself struggling with a heavier-than-usual load, there’s a good chance that metal was used for its core material! Check The Weight and make sure you’re getting what would work best for your home.

Related: 8 Best Acrylic Bathtub Review In 2022

Frequently Asked Questions (FAQs)

How Do You Clean Fiberglass Or Acrylic Bathtubs?

Cleaning fiberglass and acrylic bathtubs is an uncomplicated process. Abrasive cleaners and scrubbers are to be avoided, as they can scratch the tub’s surface or change its color. Instead, make a solution of white vinegar, dish soap, and water for gentle cleaning that won’t harm your enameled tub. Wipe the mixture with soft sponges or cloths before rinsing it off with warm water at last! Afterward, allow it to dry naturally—and you’re all set!

Can I Repair A Fiberglass Or Acrylic Bathtub?

Have a cracked or chipped acrylic or fiberglass bathtub? Don’t worry – with the right repair kit from your local hardware store, it’s easy to fix minor damage! The kits come in different colors to match perfectly with whatever type of tub you have.

To begin, simply clean around the area and then mix according to instructions.

Then apply the filler mixture directly onto the crack/chip itself for an as-good-as-new look!

But if your tub has extensive damage that extends all through its body, buying a fresh one is likely best instead of going through complicated repairs.

Typically, the filler is composed of polyester material that will adhere to fiberglass or acrylic. In some cases, a two-part epoxy may be used for other bathtub materials. You must follow the brand’s instructions when it comes to preparing the surface area and applying it to your tub for optimal results. Allow appropriate ventilation time after filling; check with manufacturer guidelines on how long before reapplication and use times are recommended.


Now that you know how to tell the difference between an acrylic and fiberglass tub, which one do you think is right for your home? If you’re still not sure, or if you have any other questions about bathtub installation or repair, our team at expert help. We’re always happy to answer any questions you may have and help you get the perfect tub for your bathroom. Give us a call today!