Acrylic Versus Fiberglass Tub - Which Should You Choose?

When planning a bathroom renovation, selecting the right bathtub material is a decision that directly impacts comfort, durability, design, and maintenance. Two of the most popular and budget-friendly options in today’s market are acrylic tubs and fiberglass tubs. But how do you determine which is the right fit for your home?

In this detailed guide, we compare acrylic vs fiberglass tubs across all the categories that matter—from construction and durability to cleaning ease, heat retention, design variety, and price. Whether you’re remodeling a master bathroom or upgrading a small guest bath, this article will help you make an informed decision that aligns with your lifestyle, aesthetic preferences, and budget.

What Is an Acrylic Tub?

Acrylic Bathtubs are constructed from a solid sheet of acrylic plastic that’s heated, molded into shape, and then reinforced with fiberglass to enhance strength and durability. This dual-layer construction offers a balance of aesthetics, durability, and ease of maintenance.

How Acrylic Tubs Are Made

Manufacturers begin by heating a sheet of acrylic and vacuum-molding it into a desired shape. Once formed, the shell is reinforced using fiberglass layers, improving structural integrity and resistance to cracking or warping.

This method allows for a smooth, non-porous surface that resists mold, mildew, and staining—key factors in a high-traffic bathroom environment.

Common Features of Acrylic Tubs

• Lightweight and sturdy
• Smooth, glossy finish
• Excellent heat retention for longer, warmer baths
• Available in many shapes, sizes, and colors
• Compatible with whirlpool, air massage, and jetted systems

Safety and Toxicity of Acrylic Tubs

One common concern is: are acrylic tubs toxic? The answer is no—quality acrylic bathtubs are non-toxic and safe for daily use. They are manufactured under strict standards, and once cured and reinforced, the material is chemically stable and emits no harmful VOCs.

Aquatica’s acrylic tubs are made from premium-quality Lucite acrylic, ensuring a safe, hygienic, and long-lasting bathing experience. You can explore our full range of acrylic bathtubs for models that balance luxury with everyday practicality.

What Is a Fiberglass Tub?

Fiberglass bathtubs, also known as FRP (fiberglass reinforced plastic) tubs, are created by spraying layers of molten glass fibers into a mold and coating it with a polyester resin gelcoat. The result is a lightweight tub with a glossy finish.

Fiberglass Tub Construction

Fiberglass tubs are constructed by:

1. Weaving thin glass strands
2. Mixing them with resin
3. Spraying the mixture onto a mold
4. Applying a gelcoat finish to give the surface a smooth appearance

This process is cost-effective and fast, which is why fiberglass bathtubs are often the most affordable on the market.

Lightweight and Affordability

Fiberglass tubs are extremely lightweight, usually weighing 30-70 lbs, making them ideal for DIY installations or for use in second-floor bathrooms where heavy materials are impractical.

They’re also one of the most budget-friendly bathtub materials, which makes them attractive for rental properties or temporary remodels.

Common Applications

• Fiberglass tub and shower combos
• Fiberglass freestanding tubs (lower-cost alternatives)
• Fiberglass whirlpool tubs in mid-range renovations

While fiberglass tubs are a great entry-level option, they do have trade-offs in terms of durability and long-term value, as we’ll explore next.

Acrylic vs Fiberglass – Key Differences

Choosing between an acrylic bathtub vs fiberglass bathtub involves understanding how each material performs under everyday use. While both types of tubs may appear similar at first glance, they differ significantly in durability, finish, insulation, and overall value.

Below is a breakdown of the most important differences:

Appearance & Finish

• Acrylic tubs offer a glossy, smooth, and uniform surface. The finish is non-porous, making it resistant to discoloration, mildew, and hard water stains.
• Fiberglass tubs have a gelcoat finish that can fade, dull, or develop uneven patches over time, especially on the tub floor where water collects.

Design Tip: If you want a modern tub that holds its visual appeal for years, acrylic is the superior choice. Browse Aquatica’s elegant freestanding acrylic bathtub designs for timeless aesthetics.

Durability & Lifespan

• Acrylic tubs are generally more durable, lasting 20–30 years with proper care.
• Fiberglass tubs tend to wear faster, with an average lifespan of 10–15 years, particularly in high-use households.

Frequent use, abrasive cleaning, or exposure to chemicals can cause fiberglass tubs to crack or warp, while acrylic resists such damage far better.

Heat Retention & Comfort

• Acrylic is a better insulator. It retains warmth, so bathwater stays hot longer—ideal for long soaking sessions.
• Fiberglass loses heat quickly, making it less suitable for those who value comfort and relaxation during baths.

Want to upgrade your bathing experience? Explore Aquatica’s Therapy Bathtub Systems with air massage and heat-retention features built into our acrylic tubs.

Price Comparison

• Fiberglass tubs are typically the least expensive bathtub option, with average prices starting around $200–$500.
• Acrylic tubs are a mid-range option, averaging $500–$1,000+, depending on features and style.

While fiberglass may seem like a bargain, acrylic offers greater value over time by reducing repair and replacement costs.

Weight and Installation

• Fiberglass is lighter (around 30–70 lbs) and easier to lift, ideal for DIY installs.
• Acrylic tubs are heavier (approx. 70–100+ lbs) but are still manageable for standard residential installations.

For homeowners planning an install, visit Aquatica’s guide on How to Choose the Right Bathtub to ensure the perfect fit and finish for your space.

Similarities Between Acrylic and Fiberglass Tubs

Despite their differences, acrylic and fiberglass tubs share several benefits, making them more accessible to a wide range of homeowners:

Lightweight Construction

Both materials are lighter than cast iron or porcelain, making them easy to transport and install.

Moldable into Many Shapes and Sizes

Whether you want a rectangular alcove tub, a round freestanding model, or a compact soaking bath, both acrylic and fiberglass are highly formable.

Budget-Friendly Options

Both acrylic and fiberglass tubs are affordable alternatives to solid surface, cast iron, or stone tubs, appealing to budget-conscious renovators.

Easy Maintenance

A simple wipe with mild detergent is all that’s needed to maintain the shine of either tub type. For a full guide, visit Aquatica’s Secrets to Keeping Your Bathtub Squeaky Clean .

Pros and Cons of Acrylic Tubs

When it comes to bathtub materials, acrylic tubs strike a balance between modern design, longevity, and user comfort. Let’s explore the acrylic tubs pros and cons in detail to help you assess whether this material is the right fit for your bathroom remodel.

Pros of Acrylic Tubs

• Excellent Heat Retention
  Acrylic has strong insulating properties, keeping water warmer for longer—a major advantage for those who enjoy relaxing soaks.
• Highly Durable Surface
  Acrylic tubs resist cracking, fading, and chipping, especially when properly reinforced with fiberglass. They last for decades when well maintained.
• Smooth, Non-Porous Finish
  The glossy surface is easy to clean, resists mold/mildew, and maintains its shine with minimal upkeep.
• Lightweight and Easy to Install
  While heavier than fiberglass, acrylic tubs are still far lighter than porcelain or cast iron and can be installed without floor reinforcement.
• Variety of Designs and Colors
  Acrylic allows for custom shapes, colors, and finishes, making it ideal for freestanding designer tubs like Aquatica’s Lillian Series or space-saving small freestanding bathtubs .
• Compatible with Add-ons
  Many air-jetted, hydromassage, and chromotherapy systems are designed for acrylic tubs, allowing you to create a luxury spa bath at home.

Cons of Acrylic Tubs

• Susceptible to Scratching
  The surface can be scratched by abrasive cleaners or sharp objects. Always use soft cloths and non-abrasive products.
• Moderately Priced
  Acrylic tubs are more expensive than fiberglass upfront, although they often pay off in long-term value.
• Sensitive to Harsh Cleaners
  Avoid chemical-heavy cleaning agents like bleach or acetone, which can damage the acrylic coating over time.

For more insights, visit Aquatica’s expert breakdown on Why Choose an Acrylic Bathtub .

Pros and Cons of Fiberglass Tubs

While fiberglass tubs are often praised for their affordability and lightweight design, they do have notable trade-offs in performance and lifespan. Here’s a look at the advantages and limitations of choosing fiberglass for your next bathtub.

Pros of Fiberglass Tubs

• Extremely Lightweight
  At around 30–70 lbs, fiberglass tubs are easier to transport, carry upstairs, and install without additional support.
• Lower Upfront Cost
  Fiberglass is one of the most affordable materials, making it attractive for budget-conscious homeowners, rental properties, or quick remodels.
• Simple Installation
  Fiberglass is flexible and easy to cut or adjust during installation. This is particularly useful in older homes with irregular spaces.
• Easy to Replace
  Due to their lower cost, fiberglass tubs are easy to replace when worn or damaged.

Cons of Fiberglass Tubs

• Low Durability
  Fiberglass is prone to chipping, cracking, and fading, especially under frequent use or in households with children or pets.
• Porous Surface
  Over time, the gelcoat layer can become porous, leading to stains, mildew, and water absorption.
• Requires Frequent Maintenance
  Fiberglass tubs need to be refinished or reglazed every few years to maintain appearance and prevent leaks.
• Limited Design Flexibility
  Fiberglass tubs typically come in basic styles and white finishes, with fewer custom options than acrylic.

When to Consider Fiberglass Bathtub Replacement

If your fiberglass tub shows signs of:

• Discoloration or yellowing
• Cracks or structural soft spots
• Persistent mold or water absorption
• Surface dullness or flaking

…it may be time to invest in a fiberglass bathtub replacement or upgrade to a more durable acrylic tub. Explore our extensive collection of freestanding tubs that combine long-lasting performance with elevated design.

How to Choose Between Acrylic and Fiberglass

Making the right choice between a bathtub acrylic or fiberglass depends on your lifestyle, budget, and bathroom needs. While both materials are accessible and widely used, they suit different types of homeowners.

Here’s a decision-making guide to help you determine the best material for your space.

Consider Your Budget and Lifestyle

• Choose Fiberglass, If you’re on a tight budget, need a quick remodel, or are outfitting a rental or secondary bathroom. It offers short-term savings but may require future maintenance or replacement.
• Choose Acrylic, If you want a longer-lasting, more comfortable tub with customizable designs and better resistance to wear.

Tip: Investing in an acrylic bathtub from Aquatica often results in better long-term savings by reducing repair and replacement needs. For frequent use, it’s a more reliable material.

Matching Tub with Bathroom Aesthetics

Acrylic gives you more freedom in shape, size, and color—ideal for homeowners who want a signature piece like a:

• Clear acrylic tub (modern aesthetic)
• Freestanding centerpiece tub in bold matte black or soft ivory
• Double-ended or slipper design for spa-inspired relaxation

Fiberglass, while functional, usually comes in standard white finishes and simpler shapes.

Want a modern showpiece? Discoverand Aquatica’s full colored bathtub collection .

Comparing with Porcelain and Resin Alternatives

Let’s break down the differences between acrylic vs porcelain tub, fiberglass tub vs porcelain, and acrylic vs resin tubs to cover more alternatives.

• Acrylic vs Resin Tubs: Resin is heavier and more premium but requires a bigger investment. Acrylic is easier to install and still offers solid performance.
• Fiberglass Tub vs Porcelain: Porcelain is more durable and luxurious but difficult to install and prone to chipping. Fiberglass is easier to work with but wears faster.
• Vinyl Tubs & Plastic Bathroom Tubs: These terms are often used interchangeably with fiberglass tubs. They refer to similar low-cost options that lack longevity.

Learn more about solid surface vs other bathtub materials in our article on which bathtub material is best .

Alternative Bathtub Materials Compared

Aside from acrylic and fiberglass, several other bathtub materials are available, each with unique advantages. Let’s briefly examine how they compare for homeowners seeking other options.

Acrylic vs Porcelain Tubs

• Porcelain tubs are durable and luxurious but heavy and expensive to install. Acrylic offers a similar look but is more affordable and easier to maintain.

Acrylic vs Resin Tubs

• Solid surface resin tubs are a step up in luxury, offering excellent heat retention and seamless design. Acrylic is more accessible in price and variety, making it a top choice for many homeowners.

Browse Aquatica’s solid surface bathtubs to explore our innovative AquateX™ material, made from recycled seashells and engineered for exceptional performance.

Vinyl and Plastic Tubs – Are They Worth It?

• Often categorized alongside fiberglass, vinyl tubs or plastic bathroom tubs are lightweight but usually lack the structure and durability of acrylic or resin. They are best suited for short-term use or budget remodels.

What are the Bathtub Materials

To help you make a well-informed decision, we’ve gathered answers to the most frequently asked questions about bathtub acrylic or fiberglass materials. These address common user pain points and clear up confusion about material identification, safety, and usage.

Acrylic vs Fiberglass for Freestanding Tubs – Which Wins?

If you’re considering a freestanding bathtub, the choice between acrylic and fiberglass becomes even more important.

Why Acrylic Is Preferred for Freestanding Bathtubs

• More Design Flexibility: Acrylic allows for sculpted edges, deeper wells, and modern shapes like ovals, round tubs, or Japanese soakers.
• Better Structural Stability: Freestanding tubs need stronger walls to support users without additional framing. Acrylic reinforced with fiberglass offers just that.
• More Finish Options: From matte to high-gloss, and even clear acrylic tubs, the design variety is unmatched.

Fiberglass freestanding tubs do exist, but they often feel flimsy and require extra support frames, defeating the aesthetic appeal of freestanding designs.

Looking for a modern showpiece? Explore Aquatica’s full freestanding tub collection for bold, innovative designs.

Maintenance & Repair: Which Tub Lasts Longer?

Maintenance is one of the top concerns when choosing between acrylic vs fiberglass tub materials. Let’s explore how each holds up over time.

Cleaning and Maintenance

• Acrylic Tubs:
  • Require gentle cleaners
  • Resist mold, mildew, and staining
  • Surface scratches can be buffed or polished out
• See our guide: How to Clean a Bathtub Organically
• Fiberglass Tubs:
  • Prone to staining and porous surface deterioration
  • May need frequent refinishing
  • More sensitive to heavy-duty cleaners and abrasive pads

Repair and Longevity

• Acrylic bathtubs can often be restored with surface polishing or filler kits, extending their lifespan significantly.
• Fiberglass tubs degrade faster and develop soft spots, requiring full replacement in many cases after 10–15 years.

Pro Tip: For peace of mind, explore Aquatica’s Hydromassage Systems , all engineered for use with durable acrylic tubs for long-lasting wellness benefits.

What Is a Bathtub Made Of?

Modern bathtubs are made from a variety of materials, including:

• Acrylic (reinforced with fiberglass)
• Fiberglass (with a resin gelcoat)
• Porcelain enamel over steel or cast iron
• Solid surface resin
• Stone and composite materials

Acrylic and fiberglass are among the most popular for their affordability, ease of installation, and versatility. For more on material innovations, visit this page .

How to Tell If My Shower Is Fiberglass or Acrylic?

You can usually determine the material using the following methods:

• Weight Test: Fiberglass tubs are noticeably lighter (approx. 70 lbs), while acrylic tubs can weigh over 100 lbs.
• Flex Test: Gently press the tub wall. Fiberglass feels more flexible and may give slightly; acrylic is firmer.
• Surface Shine: Acrylic typically has a more even, glossy finish, while fiberglass may show subtle unevenness or faded patches.
• Color Degradation: If your tub is showing wear, such as dull spots or yellowing, it is more likely to be fiberglass.

More tips on identifying your material are available in our detailed guide: How to Tell the Difference Between Tub Materials .

Is Fiberglass Tub Lighter Than Acrylic Tub?

Yes. Fiberglass is lighter than acrylic, making it easier for single-person DIY installs. This is especially helpful in multi-level homes where lifting capacity is limited. However, acrylic offers better structural integrity and heat retention, which balances out the added weight.

Are Acrylic Tubs Toxic?

No. High-quality acrylic tubs are non-toxic. Once cured and reinforced, the material is inert and safe for everyday use. At Aquatica, we use premium-grade Lucite acrylic that meets health and environmental standards, ensuring a safe bathing experience for all family members, including children.

What’s the Difference Between a Plastic and Acrylic Tub?

The term "plastic bathtub" is often misused to refer to either fiberglass or low-end vinyl tubs. Acrylic, while technically a type of plastic, is a high-performance version reinforced with fiberglass, offering vastly superior:

• Durability
• Heat retention
• Stain resistance
• Design options

Acrylic outperforms generic plastic tubs in every measurable category.

Expert Buying Checklist: How to Decide the Best Tub for You

Before finalizing your decision on a bathtub acrylic or fiberglass, use this checklist to align your purchase with your home, lifestyle, and design goals.

Budget

• Tight budget or quick remodel? → Fiberglass is the most cost-effective upfront.
• Looking for lasting value? → Acrylic pays off in long-term durability, reduced maintenance, and resale appeal.

Bathroom Size & Installation

• Smaller bathrooms or tight spaces benefit from acrylic tubs due to design flexibility.
• Lightweight fiberglass is ideal for DIYers or second-floor installs with limited load-bearing capacity.

Tip: Explore space-saving solutions in our guide: Bathtubs for Small Bathrooms

Aesthetic & Design Preferences

• Want a statement piece like a clear acrylic tub or double-ended slipper design? → Acrylic offers more customization.
• Seeking basic utility? → Fiberglass provides functional, no-frills tub designs.

Need inspiration? Browse our curated selection of freestanding modern bathtubs or classic freestanding bathtubs .

Intended Use

• Daily soaks or family use? Choose acrylic for better heat retention, durability, and resistance to wear.
• Occasional guest use? Fiberglass may suffice, especially in low-traffic bathrooms.

Upgrade Potential

• Looking to integrate air jets, chromotherapy, or Bluetooth features? Acrylic tubs are more compatible and structurally supportive of these add-ons.

Explore Aquatica's advanced Bluetooth-compatible bathtubs or Chromotherapy tubs for personalized wellness.

Conclusion: Acrylic vs Fiberglass Tub – Final Verdict

Both acrylic and fiberglass tubs serve an important purpose in the bathroom remodeling space, but the right choice depends on your specific goals, expectations, and usage needs.

If you’re looking for durability, elegance, and a broader design palette, acrylic tubs from Aquatica are the clear winner.

Explore our complete Acrylic Bathtub Collection — including freestanding, built-in, soaking, and jetted options.

Acrylic vs Fiberglass Tub - Frequently Asked Questions (FAQ)

1. What is the main difference between acrylic and fiberglass tubs?

Acrylic tubs are made from molded acrylic reinforced with fiberglass, offering better durability and heat retention. Fiberglass tubs are made from sprayed fiberglass and resin, making them lighter and more affordable but less durable.

2. Which is more durable: acrylic or fiberglass tub?

Acrylic tubs are more durable and resistant to cracking, fading, and chipping. They typically last 20–30 years, whereas fiberglass tubs may only last 10–15 years with regular use.

3. Are acrylic tubs toxic?

No, high-quality acrylic tubs are non-toxic and safe for daily use. They are chemically stable and do not emit harmful VOCs once cured.

4. Which retains heat better—acrylic or fiberglass?

Acrylic tubs have superior heat retention compared to fiberglass, making them ideal for long, warm soaks.

5. Is fiberglass cheaper than acrylic?

Yes, fiberglass tubs are generally more affordable upfront, with prices starting around $200–$500, while acrylic tubs typically range from $500 to over $1,000.

6. Can both materials support jet or whirlpool systems?

Acrylic tubs are more compatible with whirlpool, air massage, and chromotherapy systems. While some fiberglass tubs may include jets, they are less commonly used in high-end hydrotherapy installations.

7. Which material is easier to install?

Fiberglass tubs are lighter and easier to install, especially in tight or upper-level spaces. Acrylic tubs are slightly heavier but still manageable for most standard installations.

8. How do I clean an acrylic or fiberglass tub?

Use mild, non-abrasive cleaners and soft cloths for both. Avoid bleach or acetone-based products, especially on acrylic tubs.

9. Do fiberglass tubs stain or crack easily?

Yes, fiberglass tubs have a porous gelcoat that can become stained, scratched, or cracked more easily over time.

10. When should I replace a fiberglass tub?

Consider replacing it if you notice yellowing, surface cracks, mold issues, or structural soft spots.

11. Can I get colored or custom-shaped fiberglass tubs?

Design options are limited with fiberglass. Acrylic tubs offer more flexibility in shapes, colors, and finishes.

12. Which is better for a long-term investment?

Acrylic tubs offer better long-term value thanks to their durability, comfort, and resistance to wear.

Ready to Upgrade Your Bathing Experience?

Whether you're remodeling your primary bathroom or planning a luxury spa at home, Aquatica's premium bathtubs are designed for comfort, quality, and longevity.

Shop Top Categories:

• Freestanding Acrylic Tubs
• Air Jetted Bathtubs
• Luxury Walk-in Bathtubs

Still unsure? Visit our expert guide on How to Choose the Right Freestanding Bathtub or talk to our specialists for personalized recommendations.

Still comparing acrylic vs fiberglass tub options?

Let us help.

Aquatica offers a wide variety of premium acrylic bathtubs , featuring elegant designs, industry-leading durability, and optional therapeutic features tailored for modern living.

Explore Our Top-Selling Models:

• Emmanuelle 2 Series – Luxury Freestanding Tubs
• True Ofuro Series – Japanese Soaking Bathtubs
• Lillian Series – Deep, Designer Oval Tubs