Roman Fiberglass Pools

ROMAN POOLS BRING CLASSIC ELEGANCE HOME

A Roman fiberglass pool combines straight sides with softly rounded ends, drawing on the timeless symmetry of ancient bath design to create a shape that feels both refined and welcoming. Among the fiberglass pool shapes Thursday Pools offers, Roman pools stand out for homeowners prioritizing easy conversation, relaxed lounging, and everyday swimming.

THE BENEFITS OF CHOOSING A ROMAN FIBERGLASS POOL

Timeless Style with Softer Curves

Roman pools bring symmetry and structure, then soften the look with rounded ends that add warmth and classic appeal.

Space-Efficient Shape That Still Feels Grand

Straight sides help you use backyard space wisely, especially in narrower layouts, while the domed ends create a distinctive focal point.

Designed for Comfort and Connection

Wide steps and built-in seating make Roman pools feel social and welcoming for lingering conversations or laid-back afternoons.

Elegant Backyard Versatility

Roman pools complement modern landscaping and traditional architecture. They can anchor a formal layout or elevate a relaxed outdoor retreat.

Fiberglass Makes Roman Luxury More Attainable

Roman shapes can cost more in other pool types due to custom craftsmanship. Fiberglass delivers the same timeless design in a one-piece shell built for long-lasting performance.

Thursday Pools kid playing in pool with dad watching

THE BENEFITS OF CHOOSING A ROMAN FIBERGLASS POOL

Timeless Style with Softer Curves

Roman pools bring symmetry and structure, then soften the look with rounded ends that add warmth and classic appeal.

Space-Efficient Shape That Still Feels Grand

Straight sides help you use backyard space wisely, especially in narrower layouts, while the domed ends create a distinctive focal point.

Designed for Comfort and Connection

Wide steps and built-in seating make Roman pools feel social and welcoming for lingering conversations or laid-back afternoons.

Elegant Backyard Versatility

Roman pools complement modern landscaping and traditional architecture. They can anchor a formal layout or elevate a relaxed outdoor retreat.

Fiberglass Makes Roman Luxury More Attainable

Roman shapes can cost more in other pool types due to custom craftsmanship. Fiberglass delivers the same timeless design in a one-piece shell built for long-lasting performance.

ROMAN VS. RECTANGLE VS. FREEFORM POOLS

Each pool shape creates a different backyard feel and supports different priorities. A Roman fiberglass pool blends classic symmetry with rounded ends for a softer, more architectural look. You get the efficiency of straight sides plus a timeless design that feels elevated and inviting.

A rectangular fiberglass pool leans fully into straight lines and swim performance. It suits lap swimmers, modern design lovers, and homeowners who want the cleanest layout for patios and automatic pool covers. A freeform fiberglass pool brings organic curves and a relaxed, nature-inspired vibe. It flows beautifully with landscaping and creates a resort feel that feels playful, peaceful, or both.

Choose a Roman Pool if You:

Love timeless symmetry with softened, elegant ends
Want a classic focal point that feels refined and inviting
Prefer curved built-in seating for gathering and relaxing
Want straight sides without sharp corners
You value visual balance and architectural appeal

Choose a Rectangle Pool if You:

Want a clear lap-swimming lane
Plan to install an automatic pool cover
Prefer modern, structured design lines
Want defined edges for patio alignment
Prioritize swim efficiency and symmetry

Choose a Freeform Pool if You:

Want a softer, more natural backyard vibe
Love curves that complement landscaping and patios
Prefer a relaxed, resort-inspired look
Care more about atmosphere than strict swim symmetry
Want lounging zones that feel organic and social

CHOOSING A ROMAN POOL SIZE

Before you choose a Roman pool design and size, think about how you want your pool to feel day to day, from lap space to lounging space, and how much patio or landscaping you want to keep around it.

Cathedral | California Finish

Medium Roman Pools

14’ x 33’

Medium Roman pools offer comfortable swim space and room to gather without dominating a standard-size lot. The proportions work well for everyday family use, entertaining, and backyards where you want the pool to anchor the space without taking over. Benefits of a medium Roman pool include:

• Comfortable swim and gathering space
• Strong proportion on standard backyard lots
• Room for entertaining without crowding the yard
• Suits both active swimming and relaxed lounging

Cathedral LX | California Finish

Large Roman Pools

16' X 36' to 16’ x 40’

Large Roman pools are best suited for homeowners who want the pool to be the centerpiece of the backyard with room to match. The longer swim corridor and wider footprint support bigger gatherings and give the shape the space it needs to make a full impression. Benefits of a large Roman pool include:

• More swim distance and gathering capacity
• Clear separation between lounging and active swim zones
• Acts as a dramatic centerpiece for wider or deeper yards
• Room to build a full outdoor destination around it

ROMAN FIBERGLASS POOLS SPECIFICATIONS

Click any column header to sort ⇅

Pool Model	Available Sizes	Tanning Ledge	Steps/Benches	Deep End Bench	Deep End (5+ ft)	Courtesy Ledges
CATHEDRAL	14' x 33' 5'	✗ NO	✓ YES	✗ NO	✓ YES	✗ NO
CATHEDRAL LX	16' x 36' 5'8" \| 16' x 40' 6'	✓ YES	✓ YES	✓ YES	✓ YES	✓ YES

THURSDAY POOLS’ ROMAN FIBERGLASS POOL COLLECTION

Cathedral

Classic Roman symmetry with an inviting layout built for relaxing and connecting. Cathedral brings timeless style to backyards that want elegance without excess.

FEATURES

Sizes: 14’ x 33’ 5’

Built-In Steps/Benches • Open Swim Area • Deep-End Bench • Deep End

MORE DETAILS

Cathedral LX

The Roman pool, elevated. Cathedral LX keeps the iconic curved-end design and adds a luxury-forward tanning ledge that turns everyday pool time into true retreat time.

FEATURES

Size:16’ x 36’ 5’8” | 16’ x 40’ 6’

Tanning Ledge • Built-In Steps/Benches • Open Swim Area • Deep-End Bench • Deep End • Courtesy Ledge

MORE DETAILS

FREQUENTLY ASKED ROMAN FIBERGLASS POOL QUESTIONS

HOW MUCH DOES A ROMAN FIBERGLASS POOL INSTALLATION COST?

Most fiberglass pool installations range between $30,000 and $85,000 or more, depending on pool size, features, delivery distance, site access, and regional labor costs. For a full breakdown of fiberglass pool installation costs, see our Fiberglass Pool Cost Guide. Financing is also available from certain lenders for those interested in financing their pool project.

WHAT AFFECTS THE PRICE OF A ROMAN POOL?

Pool size and depth profile drive cost first. Yard access, excavation conditions, retaining walls, decking design, water features, and landscaping plans also influence pricing.

WHAT MAKES A ROMAN POOL DIFFERENT FROM A RECTANGULAR POOL?

Roman pools keep straight sides for efficient use of space, then add rounded ends for a softer, more classic look. Rectangle pools stay fully linear and often prioritize lap swimming lanes and automatic cover compatibility.

DO ROMAN POOLS COME WITH TANNING LEDGES OR SHALLOW LOUNGING AREAS?

Thursday Pools’ Cathedral LX design includes a large, luxurious tanning ledge that makes relaxation a main feature.

WHAT DOES A ROMAN FIBERGLASS POOL INSTALLATION LOOK LIKE?

Your installer excavates, sets the one-piece fiberglass shell, connects plumbing, and completes backfill and decking. Most projects wrap within a few weeks under normal conditions, depending on weather and site complexity.

DO ROMAN POOLS WORK WELL IN NARROW YARDS?

With straight lines along its two long sides, Roman pools align well along fences, patios, and property lines of narrow backyards. The rounded ends add style without sacrificing the space efficiency of straight sides.

ARE ROMAN POOLS HARDER TO MAINTAIN BECAUSE OF CURVED ENDS?

Roman pools can collect debris in curved areas and steps, so regular brushing in those zones helps keep everything clean. Fiberglass surfaces inherently support easier cleaning and resist algae buildup, which makes routine care simpler overall.

Interested in seeing more pool designs?

Visit our Pool Designs Page

Rectangle Fiberglass Pools

Rectangle Fiberglass Pools Built for YOUR Life

A rectangle fiberglass pool is a pre-molded, single-piece fiberglass pool with straight walls and clean corners—ideal for lap swimming, modern backyard design, and automatic safety covers. Thursday Pools reimagines the classic rectangle with innovative features and built-in comfort options designed for relaxing, fitness, and connection. As one of the most popular pool shapes, rectangles offer timeless appeal and practical functionality.

The Benefits of Choosing a Rectangle Fiberglass Pool

Ideal for Lap Swimming & Fitness

Straight edges create uninterrupted swim lanes, making it easy to add a swim jet system or stick to a consistent workout routine.

Compatible with Automatic Pool Covers

The straight track system fits cleanly on rectangular pools, improving safety, retaining heat, and cutting energy costs.

Efficient Use of Space

Rectangle pools align naturally along fences, homes, and patios, making them a smart choice for narrow or smaller backyards.

Timeless Style

Clean lines work with both modern and traditional architecture, so a rectangle pool looks at home in almost any backyard.

Built for How You Use It

Choose from tanning ledges, integrated benches, zero-entry options, swim-out benches, or varied depth configurations depending on how you plan to use your pool.

Thursday Pools kids playing in pool with toys and parents lounging in background

The Benefits of Choosing a Rectangle Fiberglass Pool

Ideal for Lap Swimming & Fitness

Straight edges create uninterrupted swim lanes, making it easy to add a swim jet system or stick to a consistent workout routine.

Compatible with Automatic Pool Covers

The straight track system fits cleanly on rectangular pools, improving safety, retaining heat, and cutting energy costs.

Efficient Use of Space

Rectangle pools align naturally along fences, homes, and patios, making them a smart choice for narrow or smaller backyards.

Timeless Style

Clean lines work with both modern and traditional architecture, so a rectangle pool looks at home in almost any backyard.

Built for How You Use It

Choose from tanning ledges, integrated benches, zero-entry options, swim-out benches, or varied depth configurations depending on how you plan to use your pool.

RECTANGLE VS. FREEFORM VS. ROMAN FIBERGLASS POOLS

Each pool shape creates a different backyard feel and supports different priorities. A rectangular fiberglass pool gives your backyard a clean, open look that pairs beautifully with almost any style of home. Its classic lines feel as natural beside a modern patio as they do in a traditional backyard.

A freeform fiberglass pool features soft curves that blend into gardens and landscaping, creating a backyard that feels like an outdoor escape. A Roman fiberglass pool combines straight sides with gently rounded ends, giving your backyard a classical, architectural elegance.

Choose a Rectangle Pool if You:

Want the maximum length lap-swimming lane
Plan to install an automatic pool cover
Prefer modern or minimalist architectural design
Have a narrow backyard layout
Want clean patio alignment and defined edges

Choose a Freeform Pool if You:

Prefer soft, natural curves
Want a lagoon-inspired aesthetic
Plan to incorporate rock features or tropical landscaping
Care more about organic appearance than swim space
Want lounging zones that feel organic and social

Choose a Roman Pool if You:

Love timeless symmetry with softened, elegant ends
Want a classic focal point that feels refined and inviting
Prefer curved built-in seating for gathering and relaxing
Want straight sides without sharp corners
You value visual balance and architectural appeal

Choosing a Rectangular Pool Size

Before choosing a specific rectangle fiberglass pool model, understand which size fits your yard and how you plan to use it. Size impacts budget, patio space, swim function, and overall backyard flow.

Sea Turtle in California Finish

Small Rectangle Plunge Pools

8'4" x 16’ to 12’ x 25’

Small rectangle fiberglass pools are ideal when yard space is limited or when you want the pool to complement your outdoor living area instead of dominate it. Benefits of small rectangle pools include:

• Plunge pool style living

• Cooling off and relaxing

• Light exercise

• Preserving space for patio, turf, or outdoor kitchens

Aspen | Diamond Finish

Medium Pools Most Popular for Families

13.5' x 28' to 14' x 36'

Medium rectangle pools offer the most flexibility for everyday use. They provide enough length for laps and games while still leaving room for landscaping and gathering areas in a standard-size (roughly 8,400 sq ft) lot. Benefits of a medium rectangle pool include:

• Lap swimming without a full competition length

• Room for pool games and open swim areas for kids and guests

• A balanced backyard layout with space remaining for patio, turf, or outdoor kitchens

Monolith | California Finish

Large Pools for Diving, Hosting & Entertaining

13.5' x 35' to 16' x 41'

Large rectangle pools are best suited for homeowners who want swimming distance and gathering capacity to be the priority in their backyard design. In some instances, this size shifts the yard’s focus toward the pool itself rather than surrounding lawn space or secondary features.

• Capacity for larger groups without the pool feeling crowded

• Clear separation between shallow lounging areas and active swim space

• Strong visual proportion in wider or deeper backyards

Rectangle Fiberglass Pools Specifications

Click any column header to sort ⇅

Pool Model	Available Sizes	Tanning Ledge	Built-in Spa	Steps/Benches	Courtesy Ledges	Swim-Out Benches	Flat-Bottom Depth	Deep End (5+ ft)	Diving Pool	Beach Entry
ASPEN	12' × 25' 5'1" 14' × 30' 5'5" 14' × 35' 5'5" 16' × 35' 5'5" 16' × 40' 5'10"	✓ YES	✗ NO	✓ YES	✓ YES	✓ YES	✗ NO	✓ YES	✗ NO	✗ NO
GOLIATH	12' × 25' 5'4" 14' × 29' 5'8" 14' × 33' 6' 16' × 33' 6' 16' × 37' 6'4" 16' × 41' 6'8"	✗ NO	✗ NO	✓ YES	✓ YES	✓ YES	✗ NO	✓ YES	✗ NO	✗ NO
GRACE BEACH ENTRY	14' × 36' 5'6" 16' × 36' 5'6" 16' × 40' 5'10"	✓ YES	✗ NO	✓ YES	✓ YES	✓ YES	✗ NO	✓ YES	✗ NO	✓ YES
LIL BOB	13.5' × 27.5' 4'6"	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✗ NO
LIL BOB LX	13.5' × 35.5' 4'6"	✓ YES	✗ NO	✓ YES	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✗ NO
MACK DADDY	16' × 36' 4'8"	✓ YES	✓ YES	✓ YES	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✗ NO
MAGNATE	16' × 36' 4'8"	✓ YES	✗ NO	✓ YES	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✗ NO
MONOLITH	16' × 40' 8'6"	✗ NO	✗ NO	✓ YES	✓ YES	✓ YES	✗ NO	✓ YES	✓ YES	✗ NO
SEA TURTLE	9.5' × 19.5' 4'6"	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✗ NO
SPIRIT	13.5' × 40' 4'6"	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✗ NO
THE DRIFT	8'4" × 16' 4'8"	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✗ NO
THE NEST	8'4" × 16' 4'8"	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✗ NO
THE NOOK	8'4" × 16' 4'8"	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✓ YES	✗ NO	✗ NO	✗ NO

How much does a rectangular fiberglass pool installation cost?

Most fiberglass pool installations range between $30,000 and $85,000 or more, depending on pool size, features, delivery distance, site access, and regional labor costs. Larger rectangle pools, added features, automatic covers, upgraded decking, and complex excavation conditions can increase the necessary investment. Your backyard layout and design goals ultimately determine final pricing. For a full breakdown of fiberglass pool installation costs, see our Fiberglass Pool Cost Guide. Financing is also available from certain lenders for those interested in financing their pool project.

What affects the price of a rectangular pool?

Pool length and depth profile drive cost first. Site access, soil conditions, elevation changes, decking choices, water features, and automatic pool covers also influence pricing.

What’s the difference between rectangle pools and freeform pools?

Rectangle pools emphasize clean lines, lap-friendly swim lanes, and modern symmetry. Freeform pools create a softer, more organic backyard feel. If you value clean lines, swim efficiency, and automatic cover compatibility, rectangle often wins. Many homeowners also choose a rectangle fiberglass pool for a small backyard. If you prefer natural curves and a lagoon aesthetic, freeform may suit you better.

Are rectangular pools better with a flat bottom or a deep end?

Choose a flat-bottom rectangle pool if you plan to play games, exercise, or enjoy social standing depth. Select a deep-end design if you prefer more vertical swim space, floating freedom, or diving capability in approved models. Your intended use should guide this decision.

Should I prioritize a tanning ledge or open swim space?

If relaxation ranks first, choose a tanning ledge for shallow lounging and sunbathing. If activity and exercise matter more, prioritize open swim length. Many rectangle fiberglass pool designs balance both, giving you space to lounge and move.

How long does it take to install a fiberglass rectangle pool?

Fiberglass pools arrive as single-piece shells manufactured in a controlled environment. Your installer excavates, sets the shell, connects plumbing, and completes backfill and decking. Many projects finish within a few weeks under normal conditions, depending on weather and site complexity.

Interested in seeing more pool designs?

Visit our Pool Designs Page

Top Accessories to Complete Your Beach-Entry Pool Experience

Posted on March 18, 2025May 28, 2025 by kristin

Thursday Pools California Sandal Beach Entry pool Your beach-entry pool will be the center stage of your backyard—the spot where every lazy morning, lively summer afternoon, and starlit evening comes to life. A beach entry pool is already a statement, but why not complete the beach experience with accessories? From in-pool lounging to evening ambiance, these additions will make each moment of your pool brighter, better, and more luxurious. Let’s look at beach-entry pool accessories to transform your backyard into a place where everything feels just right—like your favorite beach vacation.

1. Elegant Loungers

No beach experience is complete without the perfect place to relax and unwind in style. Whether you go for ones you can put in the pool or out, comfort is key.

Ledge Loungers: LEDGE makes a variety of pool accessories, and these chaises are designed for in-pool use and sit right in the shallow area of your beach entry, letting you stay cool while basking in the sun. They’re sleek, durable, and available in a range of colors to match your pool’s aesthetic.
Frontgate Balencia Loungers: Line them up and soak up some rays, then stack and store them when you want to use your deck for other activities. These resort loungers are crafted with weather-resistant materials and are perfect for the patio.

2. Premium Shade Options

Even sun worshippers need some relief from the heat sometimes. Add shaded areas to your poolside for breaks. Whether you choose portable or permanent shade, or both, you won’t regret the addition.

Tuuci Shade Products: With sleek, modern product designs, Tuuci’s cantilever umbrellas, cabanas, and lounges are elegant poolside shade options that complement a beach-entry pool.
Custom Pergolas: Install a pergola near the pool to blend shade and architectural beauty. Choose wood or metal materials to match your backyard design, and consider adding string lights or flowing curtains for an inviting, Instagram-worthy vibe.

3. Floating Luxury

What’s a pool day without a little time spent floating? Upgrade your water experience with high-end floating accessories.

FUNBOY Inflatables: If you’re going to get an inflatable, you might as well get something unusual. FUNBOY floats bring a playful, fashionable atmosphere from chic daybeds to whimsical swans.
Big Joe’s Loungers: Who wouldn’t want to float around on a big bean bag? No air is required. Sturdy enough to sit on the pool deck or in the pool, their buyers seem to love their products.

4. Water Features: Beauty in Motion

Enhance the soothing vibe of your beach entry pool with water features that add movement and sound. Deck jets are thin streams of water originating from your deck that arc into your pool, adding a touch of elegance and fun. Custom cascade waterfalls are sleek and modern and can be installed along the edge of your pool, creating the relaxing sound of flowing water.

5. Poolside Fire Features

Extend your pool’s usability into the cooler months or late evenings with fire features that provide warmth and atmosphere. Whether it’s a firepit, fire table, or fire bowl, the visual contrast of the fire and your pool water creates a dynamic, inviting space you’ll never want to leave.

6. Poolside Lighting for Evening Magic

Ambient lighting can transform your pool area into an enchanting nighttime retreat. Along with the string lights we mentioned earlier, consider adding a whimsical touch with floating lights that drift across the water, perfect for evening swims or parties. Highlight the edges of your pool and walkways with subtle, modern lighting. Combining different lighting elements offers a layered, practical, and stunning look.

7. Smart Pool Automation Systems

Why adjust pool settings manually when you can control everything with your phone? These systems make it easy to customize your pool experience, whether you are planning a quiet evening or a lively party.

Hayward OmniLogic System: Manage lighting, temperature, water features, and more with a few taps on your smartphone.
Pentair IntelliCenter: A robust automation system that keeps your pool running smoothly while you sit back and relax.

Ask your pool dealer if they have any recommendations if you are looking to add SMART technology to your beach-entry pool experience.

8. Outdoor Kitchens and Bars

Nothing says “complete experience” like cooking and serving poolside. Having an outdoor kitchen and bar near your pool eliminates the hassle of running back and forth indoors for snacks, drinks, or supplies. Everything you need is there, allowing you to stay connected with your guests or family while preparing and serving food.

Set the Stage

Every addition, from elegant loungers to fire features and smart technology, brings your home closer to staycation perfection. So why wait? Start turning your dreams into a reality, one thoughtful detail at a time, beginning with booking a design consultation. An independent pool dealer can help make it everything you imagined—and more.

Winter Pool Safety Covers and Other Fiberglass Pool Winter Maintenance Tips

Posted on November 13, 2024June 16, 2025 by kristin

Thursday Pools Automatic Pool Cover

Your pool is probably not at the top of your mind during winter. However, it still requires some attention during the colder months. From covering the pool to managing water levels and safeguarding your equipment, winterizing your fiberglass pool will prevent accidents, protect your investment, and ensure a smooth reopening when the weather warms up. Beginning with winter pool safety covers, consider the following top tips as part of your cold-weather pool maintenance routine.

Buy a Winter Pool Safety Cover

Fiberglass pools are durable, but they still require protection during winter to remain in optimal condition for Spring reopening. Investing in a safety-rated cover designed for your fiberglass pool can not only help protect your pool but also people and pets. Winter pool safety covers also help maintain cleaner water, making reopening the pool in Spring much more manageable by requiring less time and fewer chemicals to bring the water back to swimmable conditions.

Your safety cover should fit tightly over the pool and have no gaps along the edges. Non-automatic winter pool safety covers are typically anchored to the surrounding deck. Make sure the anchors are in good condition and securely fastened. If you notice any signs of wear or loosening, address these immediately to ensure the cover remains in place all winter. Automatic safety covers provide strong, reliable protection and are often rated to hold substantial weight. One of the benefits of an automatic pool safety cover over a standard winter safety cover is the ease of taking a peek periodically at your water level.

Winterize the Pool Water & Equipment

Winterizing your fiberglass pool goes beyond just covering it. You also need to prepare the water, plumbing, pumps, and filters for freezing temperatures. First, be sure to have the pool water tested prior to closing to ensure all levels are within the desired ranges. Allow enough time to make any necessary adjustments. Keep in mind, you do not need to add additional chlorine to get through winter months. The desired levels will meet desired demand as long as you open early in the spring before temperatures begin to rise. Never add Calcium Hypochlorite which is found in some shock treatments, use liquid chlorine or non chlorine shock options. Stay on top of your stain and scale maintenance doses as well. Some winterizing kits include a winterizing stain and scale control product. Clean the filter thoroughly. Backwash sand or DE (Diatomaceous Earth) filters. Rinse and store cartridge filters. Turn off the power and drain all water from the pump, filter, and plumbing by removing the drain plugs and blowing out the lines with an air compressor.

Add pool-specific antifreeze to the skimmer and return lines to protect against freezing. Cover the pump and filter with a weatherproof tarp to shield them from snow and ice. Store smaller parts like pump baskets and pressure gauges indoors, and check your equipment periodically throughout the winter to ensure it remains protected and functional for Spring.

Maintain Pool Water Levels Throughout the Winter

Fiberglass pools can be affected by fluctuating water levels during the winter. If water levels become too high under the cover, overflow can strain the pool’s shell and cause fiberglass cracks. Use a submersible pump to drain the excess. On the other hand, draining the pool too low can lead to a “floating” pool, where the pool shell lifts out of the ground, especially in areas with high water tables. You can equalize the water pressure around the pool by adding water to your pool before pumping water off your cover.

Your water line should never dip below the skimmer level in a fiberglass pool, including during winter when it’s not in use. We recommend maintaining the water level to just below the midway point of your skimmer. This level helps balance the water inside your pool with the groundwater throughout the freezing weather.

Keep the Safety Cover Clear

Regardless of your safety cover type, too much snow and ice accumulation can place dangerously excessive weight on your winter pool safety cover. And while they may seem harmless, leaves, dirt, and twigs can degrade the material of the cover over time. To prevent potential damage and make your cover last longer, clear all debris and snow from your pool cover as soon as possible.

Always use soft tools like a broom or a pool cover rake to clear your cover. Avoid sharp tools, which can tear or puncture the cover. Ice, in particular, should be left to melt naturally to avoid damaging the cover or the fiberglass shell beneath.

Supervise the Pool Area

Even in the winter, when no one is swimming, it’s important to ensure the pool area remains secure. Never allow family members or guests to walk on the pool cover, even though it may appear sturdy. Also, consider installing a fence with a self-locking gate to prevent unauthorized access to the pool area. Of all the safety measures you can take, supervision is the best way to prevent accidents around your pool.

Consider Professional Help for Winter Fiberglass Pool Maintenance

While the previous tips can help you protect your pool, you may feel more confident enlisting the help of a pool professional. An experienced pool pro can properly fit and secure a winter pool safety cover and prepare your pumps and filters for freezing temperatures. Contact a pool professional near you for advice, and continue to explore more pool maintenance advice.

Find The Inground Pool Shapes & Sizes Right For You

What Can Damage a Fiberglass Pool?

Posted on October 6, 2023October 29, 2025 by megwalker

It’s only natural to want to do as much research as possible before making a significant decision and investment into a major home addition like an inground fiberglass pool. You’ll want to learn and consider details such as installation costs, maintenance responsibilities, and how long it will last. A durable pool shell helps protect your investment, so you’re likely asking questions like, “What can damage a fiberglass pool?” or, “Can you scratch a fiberglass pool?” Worried about fiberglass pool gelcoat problems or bulging walls? Understanding how common fiberglass pool damage can happen can help you prevent it with your pool or know when repairs are necessary.

Common Causes of Fiberglass Pool Damage

Fiberglass pools are famously durable, but they’re not indestructible.

Structural Stress

Improper installation or soil movement can place uneven pressure on the pool shell, leading to bulging walls or cracks. Professional repair and proper backfilling during installation are essential to restore stability.

Sharp or Heavy Objects

Dragging metal, glass, or other sharp items across the surface can scratch the gelcoat finish. Shallow scratches may buff out, but deeper damage may require a gelcoat repair.

Improper Draining

Completely draining a fiberglass pool without professional supervision can allow groundwater pressure to push against the shell, causing cracks or shifting. Always work with a qualified installer if your pool needs draining.

Harsh Cleaning Tools

Wire brushes, stiff bristles, or metal scrapers can scratch or gouge the gelcoat. Stick with soft cloths, nylon brushes, and fiberglass-safe cleaning products to keep the surface smooth and shining.

Extreme Weather

Ground freezing, flooding, or other severe weather events can stress the pool’s structure if it isn’t properly protected. Preventive measures like winter covers and proper water balance help reduce the risk.

Pool Water Chemistry

Imbalanced water doesn’t always cause direct visible damage, but it creates conditions that accelerate staining, scaling, or gelcoat deterioration. Keeping water properly balanced protects your pool’s beauty and performance for years.

How Does Fiberglass Pool Chemistry Protect Against Pool Damage?

Water chemistry can be tricky for pool owners to master, but understanding how it works and best practices can help ensure the best preventative care possible for your pool shell. Fiberglass pool shells developing discoloration and turning a chalky white is often a result of a water chemistry imbalance.

Fiberglass pool surfaces are very durable, but they are not indestructible. Water balance is vital to ensuring surface finish protection in your fiberglass pool. Balanced pool water is neutral, meaning that the water is neither corrosive nor scaling.

High calcium levels can contribute to rising pH, leading to white deposits and surface discoloration on your fiberglass pool. With elevated calcium and pH levels, the result is often irreversible damage to the gelcoat finish. The good news? It’s also 100% preventable with proper water care.

Our fiberglass pool owner’s manual recommends calcium levels remain below 120 parts per million (ppm). Source water can often run above 120 ppm, in which case using a stain and scale control product is imperative. In our experience, Pool Stain Remover’s Scale and Stain Eliminator and Orenda’s SC-1000 do a good job chelating calcium and keeping it from discoloring your pool finish.

We recommend keeping chlorine residual levels in your pool between 1 and 3 ppm. Exceeding 5 ppm can damage the pool surface.

The pH level, which measures the acidity or basicity of water, should be between 7.2 and 7.4. Total alkalinity measures the amount of bicarbonate material in pool water and indicates the water’s capacity to withstand changes in pH. We recommend total alkalinity levels between 80 and 120 ppm.

Finally, cyanuric acid prevents the decomposition of free chlorine in the pool water. As a stabilizer for chlorine, we recommend cyanuric acid levels be between 20 and 50 ppm. As levels rise above 100 ppm, chlorine is not as effective at killing bacteria and algae.

Preventing and Fixing Fiberglass Pool Issues

Discoloration and Residue: Regular water testing, maintaining proper water chemistry, and certain equipment add-ons can prevent discoloration and deposits on a fiberglass pool’s surface by suspending calcium and reducing the need for high levels of chlorine. Getting guidance from a local pool maintenance professional is often the best way to address discoloration and residue issues, but homeowners can usually perform effective maintenance methods.

Spider Cracks: Fiberglass pool gelcoat repair methods are available to restore the gelcoat after cracking. Your independent pool builder or maintenance professionals will be able to point you in the right direction for obtaining gelcoat repair services.

Pool Wall Bulging: Bulging in fiberglass pool walls can happen when groundwater pressure combines with the ground’s natural tendency to shift, but it is often due to incorrect installation practices. The best way to prevent wall bulging is to choose a manufacturer that accounts for both flexibility and rigidity in their pools’ structures. Some innovations, like the Thursday Pools Geo-Anchoring Pool Wall®, provide additional structural support by anchoring the pool to the earth to help prevent bulging or shifting.

Prevent Damage and Protect Your Pool

We always applaud those who do their research before splashing into the world of fiberglass pool ownership. To learn more about preventing and repairing potential fiberglass pool damage, connect with a local independent Thursday Pools dealer near you.

Fiberglass Pool Damage Frequently Asked Questions

Can a fiberglass pool crack?

Yes, but it’s uncommon. Cracks usually result from improper installation, soil movement, or draining the pool without professional oversight. Working with expert installers and following proper backfilling and drainage practices minimizes the risk.

What causes scratches on a fiberglass pool surface?

Scratches happen when sharp or heavy objects (like metal, glass, or rough brushes) drag across the gelcoat. To protect your finish, always use fiberglass-safe cleaning tools, pool toys, and accessories.

Is it safe to drain a fiberglass pool?

Not without professional help. Fully draining a fiberglass pool can allow groundwater pressure to push against the shell, leading to cracks or bulging, and it may void your warranty. Always consult a pool professional before lowering the water level in a fiberglass pool.

How does water chemistry damage fiberglass pools?

Imbalanced water can discolor the gelcoat, cause chalky buildup, or shorten the life of your pool’s finish. Keep pH (7.2–7.4), chlorine (1–3 ppm), calcium hardness (under 120 ppm), and alkalinity (80–120 ppm) within fiberglass-specific ranges to protect your pool.

What should I do if my fiberglass pool develops discoloration or bulging walls?

Discoloration often improves with proper water balance and stain prevention products. Bulging walls require professional evaluation, but structural innovations like Thursday Pools’ Geo-Anchoring Pool Wall® can help prevent the problem in the first place.

Everything You Need To Know About Beach Entry (Or Zero Entry) Fiberglass Pools

The Best Robotic Cleaners For Inground Fiberglass Pools

Posted on November 30, 2022October 8, 2025 by kristin

Every fiberglass pool owner should have a thorough and working knowledge of necessary pool maintenance. It’s essential to stay on top of care and maintenance from the time you open your pool in the spring through closing it for the winter. Robotic pool cleaners can be a great help when it comes to keeping dirt and debris out of your pool, saving you time and effort. With an overwhelming amount of options available on the market, all with various features and benefits you may or may not need, deciding on a robotic pool cleaner can feel overwhelming. In our experience, the following four models are great at getting the job done while you sit back and relax.

Hayward TigerShark

A Hayward TigerShark robot can clean a 20’ x 40’ pool’s floors, walls, and waterline in just three hours. There are three configurations to choose from, including the standard TigerShark, the TigerShark Plus with remote control capabilities, and the TigerShark QC featuring a patented 90-minute quick-cleaning alternative mode. All the TigerShark models have an easy-to-clean cartridge filter system and a 24-volt motor to conserve energy and save you pool maintenance costs over time.

Average Price: Less than $1,500

Highlights:

Easy-to-clean cartridge
Lightweight design
On-board pump for intense vacuum power
Pool length: Up to 40 feet
1- to 3-year warranty depending on model
Cordless
Programmable

Dolphin Nautilus CC Plus with Wi-Fi

Dolphin’s Nautilus CC Plus with Wi-Fi features an award-winning design backed by more than 25 years of technology innovations. The unit weighs less than 21 pounds and includes a 2.5-year warranty. A swivel system enables tangle-free operation, and a smart navigation system allows the vacuum to clean a pool in approximately two hours. The Nautilus CC Plus features rubber tracks that grip the pool surface in order to get into tight corners, up walls, and across tanning ledges. A fine filter traps algae, dirt, bacteria, and biofilm, while a high-RPM system provides a deep clean.

With Wi-Fi connectivity, you can run the Nautilus CC Plus from anywhere with just a few taps on the cleaner’s smartphone app.

Average Price: Less than $900

Highlights:

East-to-clean cartridge
Lightweight design
Pool Length: Up to 33 feet
2.5-year warranty
Swivel cables for tangle-free operation
Programmable

Polaris 9450 Sport

The Polaris 9450 Sport is a lightweight robotic cleaner that can clean your pool in less than two hours. The “Aqua Trax” tires enable the Polaris to move freely across floors, steps, and walls. It has a navigation system that automatically controls the robot’s position, providing cleaning coverage without hang-ups. The 9450 Sport uses Polaris’s Vortex Vacuum technology that filters out particles and quickly gathers large debris. With a seven-day programmable timer, you can customize your settings and select the cleaning modes that work best for you. After cleaning, the 4950 Sport surfaces at the touch of a button, waits for you to grab it, then automatically evacuates water for effortless removal from the pool.

Average Price: Less than $1,000

Highlights:

Easy-to-access filter canister
Lightweight design
Easy to remove from the pool
2-year warranty
Programmable

Aquabot X4

The Aquabot X4 is ideal for all pool shapes and sizes with its 4WD non-marring, high-grip wheels for superior traction. The X4’s ultra-fine mesh filter baskets capture dirt, debris, and fine particulate down to 2 microns in size. The Anti-Tangle Swivel prevents the rover from getting hung up, and the straightforward interface makes it easy to operate and program. You can choose cleaning cycles between one and two hours long while programming for it to run automatically every 48, 72, or 96 hours.

Average Price: Less than $800

Highlights:

Easy-to-access filter
Lightweight design
Pool Length: Up to 60 feet
Energy-efficient
3-year warranty
Programmable

Looking for more information on fiberglass pool care? Explore Thursday Pools’ Ultimate Fiberglass Pool Maintenance Guide for a thorough look at everything you need to know.

And if you’re ready for personalized advice, connect with a local independent Thursday Pools dealer near you.

Frequently Asked Questions About Robotic Pool Cleaners

Do robotic pool cleaners work with fiberglass pools?

Yes. Robotic pool cleaners work great with fiberglass pools because they use gentle brushes and smart navigation systems that scrub floors, walls, and waterlines without scratching the gelcoat. They lift algae, dirt, and debris while saving you time compared to manual cleaning.

How much do robotic pool cleaners cost?

Most high-quality robotic pool cleaners cost between $800 and $2,000. Prices vary based on features such as Wi-Fi connectivity, programmable timers, and quick-clean modes. While the upfront cost may feel significant, a robotic pool cleaner saves you money long-term by reducing chemical use, conserving energy, and extending the life of your pool equipment.

Do I still need other cleaning tools if I have a robotic pool cleaner?

Yes. Robotic cleaners handle most of the heavy lifting, but you still need a pool brush, skimming net, and manual vacuum for quick cleanups or after storms. These tools complement your robotic cleaner and make sure every corner of your fiberglass pool stays spotless.

How long does it take a robotic pool cleaner to clean a pool?

Cleaning time depends on the model and pool size. Many robotic cleaners can clean an average 20’ x 40’ fiberglass pool in two to three hours. Some models even feature quick-clean settings that finish in as little as 90 minutes.