How Fiberglass Pools are Made Archives

How Much Does a Fiberglass Pool Cost in Washington?

Posted on October 23, 2025October 23, 2025 by kristin

Towering evergreens, mountain views, and crisp, clean air—Washington’s natural beauty makes it the perfect backdrop for a backyard pool. The Pacific Northwest might be known for its misty mornings and cooler climate, but summer brings warm sunny days that invite you into a pool. If you’re researching fiberglass pool cost in Washington, it’s important to understand how regional conditions can influence your overall investment. From rocky terrain around Spokane to loamy soils in the Puget Sound region, and whether you’re tucked into a wooded lot near Bellingham or enjoying open space around the Tri-Cities, local geography and site prep needs play a crucial role in shaping your pool installation costs.

Customization is at the heart of creating a poolscape that fits your lifestyle, and your design choices can have a significant impact on cost. Add-ons like an integrated spa, heating system, or expansive patio space can transform your yard, but they also affect your bottom line. With local permitting and fencing regulations to budget for, too, the planning process can quickly become complex. Choosing a trusted Washington fiberglass pool dealer can help you navigate these factors and bring your backyard vision to life on time and on budget.

What’s the Average Fiberglass Pool Cost in Washington? Survey Says…

Thursday Pools collected local cost data through a 2025 survey of our independent dealers across Washington to help you understand the average cost of installing a fiberglass pool in the Evergreen State. If you’re just beginning your research into fiberglass pool pricing in your area, this is the place to start. Our goal is to give you a realistic, data-backed snapshot of what it might cost to turn your outdoor space into a private backyard retreat.

AVERAGE WASHINGTON FIBERGLASS POOL INSTALLATION BY SIZE
Pool Type	Small Fiberglass Pools	Medium Fiberglass Pools	Large Fiberglass Pools
Size Range	Up to 26 ft Long or 400 ft²	26 to 34 ft Long or 400 to 600 ft²	35 ft and Longer or 600+ ft²
Average Cost	$110,000	$120,000	$130,000

Think of these numbers as mile markers, not a final destination. Washington’s landscape is as varied as its weather—dense tree coverage, hilly terrain, and high water tables can all affect your project scope and pricing. Your personal design choices and pool model preference play a big role, too. The best way to move from average estimates to a custom quote tailored to your yard is to connect with a local Thursday Pools dealer who knows the terrain and has experience using Washington’s natural beauty to create a staycation destination.

Estimated Installation Costs for Popular Fiberglass Pool Designs in Washington

PEARL (15’ x 25’)

Compact, elegant, and full of features, the Pearl is a standout choice for Washington homeowners who want luxury without sacrificing yard space. Its petite footprint is ideal for tighter urban lots in areas like Seattle, Tacoma, or Bellevue, where smart design and space efficiency matter. The built-in tanning ledge and wraparound bench seating elevate comfort, while the scalloped shape adds unique visual interest.

According to our 2025 survey of Thursday Pools dealers in Washington, the average cost for a standard installation of the Pearl or other compact fiberglass pools up to 26 feet long or 400 square feet is $110,000.

ASPEN (14’ x 30’)

The 30-foot-long Aspen is a mid-sized pool that delivers big on comfort and versatility. Its generous tanning ledge, full-length entry steps, and deep-end swim-outs create a space to host both active swimmers and laid-back loungers. With its sleek rectangular design, the Aspen fits beautifully into most mid-sized properties across Washington, from suburban neighborhoods around Spokane to scenic backyards of Olympia.

Based on Washington dealer survey responses, the average cost for a standard installation of the Aspen or similar fiberglass pools between 26 and 34 feet or 400 to 600 square feet is $120,000.

SANDAL (16’ x 39’)

The Sandal offers a true resort-style experience in your backyard. Featuring a sloping beach-entry design, this pool invites you to walk in like you would at the shoreline. It’s ideal for families, sunbathers, or anyone seeking a touch of luxury, and is a bold choice for expansive properties in rural or high-end neighborhoods near places like Redmond, Vancouver, or Walla Walla. With its gentle slope, integrated lounging area, and spacious swim zone, the Sandal is as stylish as it is functional.

According to our survey of Washington Thursday Pools dealers, the average cost for a standard installation of the Sandal or other large fiberglass pools 35 feet or 600 square feet and larger is $130,000.

Evaluating Your Washington Property for a Fiberglass Pool Installation

Washington’s dramatic landscapes offer beautiful settings for fiberglass pools, but can also present unique installation challenges. Western areas like Seattle, Tacoma, and Everett often have dense clay soils and high water tables, which can complicate excavation and require added drainage or engineering work. Central and Eastern Washington homes around Spokane, Yakima, and the Tri-Cities can have rockier terrain or loamy soils that may require different excavation strategies or stabilization efforts.

Yard layout and topography are other significant cost factors. Sloped lots are common across the state, particularly near the Cascades or in lakefront communities, and may need grading or retaining walls to create a level base for your pool shell.

Access issues can also impact installation costs. In urban or older neighborhoods such as Seattle’s Capitol Hill or Queen Anne, tight streets and narrow lots with limited access might call for renting a crane to position the pool shell. Even in more suburban or rural settings, landscaping, trees, and terrain can add complexity.

Working with a local pool expert who knows Washington’s varied conditions ensures your installation goes smoothly and helps avoid surprises that could affect your budget or timeline.

Pool Safety Barrier Guidelines for Washington Residential Installations

Washington requires enclosing all pools with a safety barrier at least 4 feet high with a self-closing, self-latching, and outward-swinging gate. These fencing barriers are critical for preventing unauthorized and unsupervised access, especially by young children or family pets.

Local municipalities may enforce additional pool fencing requirements to budget for, such as mandating higher barriers, stipulating certain materials, or implementing regulations on allowed fence openings.

It is essential to verify the exact Washington code requirements or local HOA regulations before construction. Consulting with an experienced fiberglass pool professional familiar with Washington’s regulations can help ensure your barrier meets all safety standards, protects your loved ones, and prevents costly compliance issues.

Washington homeowners can expect to spend $11,600 for a 300-linear-foot pool fence, based on responses to our 2025 survey of local independent Thursday Pools dealers.

Elevate Your Washington Fiberglass Pool with Popular Upgrades

Transforming your yard and elevating your fiberglass pool means more than installing the shell. It’s about customizing features that fit your lifestyle and preferences. While not essential, these popular add-ons can enhance comfort, convenience, and style to help make the most of your outdoor space. Drawing from insights shared by Thursday Pools’ trusted dealers across the state, here’s a look at some of the most in-demand upgrades and their average costs to guide your planning.

Pool Heating & Water Care Solutions

Pool Heater Average Cost in Washington: $8,000
Extend your swimming season by keeping pool water warm even during chilly Northwest evenings. A reliable heater ensures your pool stays inviting when temperatures drop.

UV Filtration System Average Cost in Washington: $2,300
Washington’s abundant rain and organic debris can affect water clarity. UV filtration helps reduce chemical use by neutralizing bacteria and algae, leaving your pool sparkling clean with less maintenance.

Automatic Pool Cleaner and Vacuum System Average Cost in Washington: $2,000
Save time on pool upkeep with an automatic cleaning system designed to keep your pool spotless even when you’re busy elsewhere.

Pool Automation and Smart Control System Average Cost in Washington: $8,400
Manage your pool’s temperature, filtration, and lighting remotely with smart controls—perfect for Washington homeowners who want seamless pool management at their fingertips.

Pool Covering & Safety Options

Automatic Pool Cover Average Cost in Washington: $16,000
Enhance safety and energy efficiency with an automatic cover that protects your pool from debris and reduces heat loss.

Manual Safety Pool Cover Average Cost in Washington: $4,900
Affordably secure your pool from unwanted access and keep out leaves, dirt, and other debris.

Poolside Surfaces & Landscape Enhancements

Concrete Patio (Approx. 1,200 sq. ft.) Average Cost in Washington: $7,100
Durable and weather-resistant, concrete patios provide a stable poolside surface that withstands Northwest rain and temperature swings.

Paver Patio (Approx. 1,200 sq. ft.) Average Cost in Washington: $9,900
Choose from natural stone, brick, or concrete pavers to add texture and slip resistance while creating a stylish, safe outdoor space.

Landscaping Average Cost in Washington: $16,000
Integrate native plants and thoughtful landscaping to complement your pool area and enhance aesthetic appeal.

Distinctive Features & Elegant Touches

Specialty Waterline Tile Average Cost in Washington: $6,500
Add a custom, elegant touch to your pool’s edge with decorative waterline tiles, elevating the overall look of your backyard retreat.

LED Pool Lights Average Cost in Washington: $2,400 per light
Set the perfect ambiance for evening swims with energy-efficient LED lighting in white or color-changing options.

Deck Jets Average Cost in Washington: $5,000 per jet
Introduce flowing water features that create graceful arcs and soothing sounds around your pool deck.

Bubblers Average Cost in Washington: $5,200 per bubbler
Perfect for shallow areas or tanning ledges, bubblers add a playful and relaxing splashing water effect.

Cascading Waterfalls Average Cost in Washington: $13,700
Bring the tranquil sound of flowing water to your backyard with a waterfall feature that doubles as a stunning focal point.

Add-On Spa Average Cost in Washington: $16,000
Create a spa-like experience with a connected spillover spa for relaxation and hydrotherapy benefits.

Recreational Slides & Diving Accessories

Simple Pool Slide Average Cost in Washington: $9,800*
Add family-friendly fun with a straightforward slide designed for safety and enjoyment.

Deluxe Pool Slide Average Cost in Washington: $13,400*
For a more thrilling experience, a deluxe slide offers extra curves and height for added excitement.

Diving Board (Type 1 Diving Pools Only) Average Cost in Washington: $8,200*
Diving boards require pools that meet strict depth and slope criteria. Professional installation and planning are essential for safety and code compliance.

*Thursday Pools strongly advises against including diving boards and slides due to safety concerns. A licensed professional must review any such additions to ensure compliance with local building codes, safety regulations, and manufacturer guidelines. Not all fiberglass pool models are suitable for diving or slide use. Homeowners and installers are responsible for proper installation and usage. Always prioritize safety and consult a qualified expert before adding diving or sliding features to your pool.

Create Your Perfect Washington Backyard Retreat with a Custom Fiberglass Pool

Installing a fiberglass pool in Washington is about more than adding home value. It’s about creating a versatile outdoor space that complements the Pacific Northwest lifestyle. Whether you’re enjoying the lush greenery of the Puget Sound region or the open skies of Eastern Washington, a custom pool offers a haven for relaxation, recreation, and memorable gatherings.

Washington’s diverse climate and landscapes mean that every backyard presents unique opportunities and challenges. Working with a knowledgeable local Thursday Pools dealer ensures your pool design perfectly suits your property’s terrain and your personal preferences.

Start your journey today by using the Thursday Pools Pool Cost Calculator for a realistic pricing estimate, explore the Pool Selector Tool to find the ideal pool design, and connect with a trusted dealer near you when you’re ready.

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Inquiring Minds Want to Know: How Do You Make a Fiberglass Pool?

Posted on March 19, 2018April 3, 2024 by John Wigand

Have you ever watched that show “How It’s Made?” It’s pretty easy to get drawn in. If you’re a naturally curious person, you could get completely geeked out watching them explain how things are made–especially things you’ve never given much thought to the inner workings of–like baseballs, aluminum foil, shoelaces, and those cute little paper umbrellas you get in your pina colada.

Well, if you’ve ever seen a giant fiberglass pool shell riding down the road on a trailer, you might have stopped to wonder, “how in the world did they make that?” The process of making fiberglass is cool enough but when you see how it’s transformed into a beautifully finished inground fiberglass pool, it’s even cooler.

Fiberglass is literally fibers of glass, spun fine enough to be molded into many forms. Your first thoughts of fiberglass may conjure up giant bubblegum pink rolls of insulation, but it takes many more forms than that. You’ll find fiberglass in your car, your home, and all over the world around you. Fiberglass is a key component in airplanes, wind turbines, medical equipment, and electronics. And if you’re in the market for a new inground swimming pool, you’d be really happy to find it in your own backyard.

The process for creating an inground fiberglass pool is fascinating. They’re constructed by hand, by craftsmen who are very skilled at their trade. The best quality fiberglass pools are made up of numerous layers of resin, chopped fiberglass, and hand-laid woven roving fiberglass for the greatest strength and durability, and the flexibility of fiberglass allows for a great variety of styles, shapes, sizes, and finish colors.

So if you’re thinking about creating your own private backyard oasis this year and would like to know more about fiberglass pools, take a look at this awesome and informative guide that will tell you exactly how a fiberglass pool is made. (But if you do get a pool and want to try and make your own paper umbrellas to go in your poolside drinks, you’ll have to watch the show to see how those are made– we’ve got absolutely no idea.)

POLYCOR® Shimmer® gel coat proves to be the ideal surface for inground swimming pools.

Posted on December 23, 2013June 10, 2024 by cargo

Daydreaming of that quick dip in the pool? Making that dream into a reality has now been made even easier by the folks at Thursday Pools®! Combining 26 years of experience in fiberglass pools and spa design with manufacturing across multiple industries, Thursday Pools® edge innovations to the pool world. Thursday Pools® builds some of the highest quality fiberglass pools in the industry, all starting with the finest grade of gel coat available for pool producers: CCP’s Shimmer® gel coats. With a coatings history that dates back to 1913 (then known as Cook Paint and Varnish) and later as the first gel coat producer in the late 1950’s, CCP Composites has produced market inspired gel coats for some of the most demanding applications and industries, including:

Marine boat hulls and decks where constant impact, toughness, UV, blister and water protection are demanded
Gel coats for tub shower units, where moisture resistance, impact, and cleaning chemicals are used
Fatigue and moisture resistance for wind energy blades
Truck hoods, air deflectors and sidewall panels where moisture, impact, fatigue, UV and heat all come into play

CCP Composites aggressively researches market needs and expectations, offering only the finest materials that will stand up to demanding industry needs. With pools in particular, only certain colors like white and light blue gel coats were suggested to s, mainly due to the nature of the chemicals needed to keep pool water healthy. These included adding acids or caustic materials to adjust pool pH, certain metallic salts chlorinated chemicals to control bacterial of the gel coat surface, either through mineral deposits or bleaching of the surface through chlorine attack.

Fabrication of a Thursday Pool starts with Shimmer®

Surprisingly, ambient temperature,chemically‐treated pool water is more aggressive chemically than salt water from the ocean. The lack of color options is often cited as one of the main reasons for choosing cement/tiled finished in‐ground pools over the superior performance of fiberglass reinforced plastic (FRP) pools.

Vinyl lined pools were also more popular because beyond the increased color range, vinyl pools offer a smooth floor (unlike the bottom of cement pools, which have a tendency to cut up customer‘s feet as they walked or played in the pool). All that changed in 2002, when one of the first pools was fabricated with a break‐through, deep colored gel coat specifically formulated by CCP’s sister company, CCP Composites Australia (FKA Cray Valley) for the rapidly growing pool industry in Australia. This product was heavily researched for blister, water uptake, color fade (bleaching) and for UV resistance. This new, ISO/NPG high performance gel coat proved to be far superior in all respects when compared to conventional pool gel coat products available at the time. Within 3‐4 years of product launch, the CCP Composites gel coat, known as POLYCOR® Shimmer®, became the dominant pool gel coat used in Australia. CCP Composites US brought this gel coat technology to the North American market, where it is now rapidly becoming the pool industry’s “go to” gel coat. Several years ago, Thursday Pools® found the benefits of Shimmer® for their pools, just as the Australian pool manufacturers did in 2002.

Bill Khamis, CFO of Thursday Pools, has seen immediate benefits of the Shimmer® products, such as “reduced air pressure for reduced styrene emissions,” along with “better transfer efficiencies that have resulted in a 30% savings in gel coat materials consumed.” “25% labor savings” have also been utilized in that it “takes less time to spray a mold, cleans up faster and spray gun set up is significantly faster.” Improved lay down of the gel coat has also been noted in a “better and more uniform surface quality that customers have noticed.” Bill is a very strong advocate for the Shimmer® product, sharing that customers not only love the color range, but also the depth of color, made even greater by the glittering particles included in the Shimmer® products.

In addition to color range and the advantages of fiberglass pools over concrete, Thursday Pools require 70% less chemicals usage, have cleaner surfaces and reduced maintenance that are significantly less abrasive to the skin and feet, and are far less prone to cracking. The only advantage to vinyl linings is the lower initial installed cost; however, ongoing maintenance costs increase every time the liner tears as it must be repaired or replaced. As you can see, FRP pools are clearly the way to go. With over 5 million in ground pools installed in the US (and over 53,000 installed in 2012 alone) and 5 of the top 10 pool states (Source: APSP 2013) within driving distance of their central Indiana location, Thursday Pools is well located, well suited and well-organized to capitalize on the growth potential of the Midwest FRP pool market.

Ed Vondell, COO of Thursday Pools®, noted the valued technical and product support that CCP Composites has provided with Bill Bannow, Technical Services Engineer and Jason Baranowski, Account Manager. Both have spent long hours in specialized support staff training in the use of the Shimmer® products, and more recently, introducing the CCP Composites rapid mold manufacturing technology that utilizes the OptiPLUS® mold making materials for a brand new Thursday Pools® design launching in 2014. The outlook for Thursday Pools® and Shimmer® gel coat looks quite promising in 2014 and beyond.

The Evolution of Fiberglass – Thursday Pools, from Auto and Marine Fiberglass Parts to Awesome Fiberglass Swimming Pools

Posted on November 18, 2013July 22, 2022 by cargo

Fiberglass Pool History

The creation of Facebook, Apple and Windows are well-known business success stories which garnered unprecedented media coverage, captivating the general public worldwide. Some of the Internet companies seem to have been created overnight, attracting job seekers and Wall Street investors to the glamor and fame of high-tech companies. Thursday Pools on the other hand started over thirty years ago in the garage of Bill Khamis, founder of the company. The company wasn’t incorporated thirty years ago but the foundation, technical know how and expertise was born in Khamis’ garage in Indianapolis, Indiana.

Khamis started learning and making race car parts out of fiberglass for a local race car company while he was still in high school. To make the specialized parts he teamed up with resin and fiberglass suppliers to learn tool making and production techniques. The tooling he developed was much smaller than Thursday Pools pool molds but met the high standards of the auto and race car industry.

After graduating from high school and during college Khamis was asked to make bigger parts and diversify from auto parts. He founded a new company called Fabri-Tech with a high school friend, Dave Camp, and started building huge fiberglass outdoor scenes for the family entertainment centers, zoos and parks. This was his stepping stone for building large molds and parts.

After selling Fabri-Tech he moved into the marine industry and built molds for his new company, KamKraft Boats. The precision molds he built using steel substructure and part tolerances, unknown in the pool industry, were a precursor for things to come. If boat building wasn’t enough, Khamis teamed up and started making carbon fiber parts for auto and the precision measuring machine industry. The parts Khamis made out of carbon fiber had even more exact tolerances which again honed Khamis’ tool making skills. Not only did it improve his tool making skills; it also gave him hands on experience with laminate schedules and materials needed for different applications.

In parallel, Khamis began high-end custom home building along with gunite pool building. He remembers the early days when gunite was 90% of the market for the high-end, million dollar plus homes. Over the years the homeowners started requesting fiberglass swimming pools so he started hiring contractors to do the installs. During this time he compared the installation time and effort of gunite versus fiberglass. He was amazed when a fiberglass pool was installed and complete in only a few short days versus the weeks his gunite crews worked on the pools.

Fast forward to 2010 and the birth of Thursday Pools. Khamis purchased an inground fiberglass pool and when it was installed, he was seriously disappointed in the quality. However, he didn’t send the pool back to the manufacturer and ask for his money back. Instead, he decided he could do better and that’s how Thursday Pools came to be.