Our Story

GSI Pool Finishes was formed in 2009 with the acquisition of a large, well-established plaster company in Southeastern Pennsylvania. As a family-owned and operated company, we have built our reputation on strong relationships, integrity, and a commitment to delivering exceptional craftsmanship on every project. With the addition of our already established Gunite division, we expanded our capabilities to better serve our contractor partners—providing multiple services under one roof and offering a true single point of contact throughout the entire pool construction process. Our goal has always been to make the building process smoother, more efficient, and more reliable for the builders we work with.

Industry-Leading Pool Finishing Solutions Built for Long-Term Performance

GSI Pool Finishes specializes in Swimming Pool Plaster, Tile and Coping, Bond Kote, Sand Blasting, Skimmer Replacement, and a wide range of additional swimming pool construction services. We take great pride in the quality of our work and the long-term durability of every finish we install. By investing in state-of-the-art equipment and maintaining a fleet of over 100 vehicles, we ensure that our teams are properly equipped to deliver consistent, high-quality results on every job site. Every member of the GSI team is trained by some of the most experienced applicators in the country, and we hold ourselves to standards that exceed industry expectations. At GSI, quality is not just a promise—it is the foundation of our family business and the reason our contractor partners continue to trust us year after year.

How It All Began

Hover on the dates below to reveal historic moments that created GSI as we know it today.

1983

Gunite Specialists, Inc. formed February 1983

February 1983

Gunite Specialist started with just 8 employees and a goal of doing the job right. Quality first has been the number one goal for over 35 years.

1993

Acquired large Gunite company operating in PA, NJ & DE

1993

Gunite Specialist made its first major acquisition in 1993. The acquisition included purchasing territory and equipment from a competing Gunite Company.

1998

Opened NJ Location

1998

In 1998, GSI opened its 2nd location in NJ and extended our operating area. It also provided much-needed efficiency in our operations to serve our customers better.

2009

GSI Pool Finishes Formed July 2009

July 2009

A major acquisition of a local plaster company enabled us to form GSI Pool Finishes and further establish ourselves in the industry.

2010

New Company Headquarters - Ambler, PA

2010

Purchased a large industrial facility in Ambler, PA and further increased our inventory ability and operational efficiency.

2014

Formed Excavation and Rebar Division

2014

Due to our demand from our contractors, GSI formed an excavation and steel division to further serve our customers. GSI has become a one-stop-shop for our contractors now with the ability to complete the 4 major phases of swimming pool construction.

2015

GSI Concrete was formed

September 2015

GSI Concrete was formed in 2015 and provides metered concrete delivery to our local contractors. With our years of experience in the industry, it has become a shining success and we look forward to delivering concrete for many years to come!

2023

2023

Celebrate 40 years of service

Our Companies

Gunite Specialists
GSI Pool Finishes
GSI Concrete

In-Ground Swimming Pools & Spas | Retaining Walls | Fountains | Excavation | Steel

Plaster | Tile | Coping | Deck Coating | Sand Blasting | Caulking

Metered Concrete Delivery | Stamped & Decorative Concrete | Patios, Sidewalks, & Walkways

Gunite Specialists

In-Ground Swimming Pools & Spas | Retaining Walls | Fountains | Excavation | Steel

GSI Pool Finishes

Plaster | Tile | Coping | Deck Coating | Sand Blasting | Caulking

GSI Concrete

Metered Concrete Delivery | Stamped & Decorative Concrete | Patios, Sidewalks, & Walkways

Why Builders Choose GSI Pool Finishes?

At GSI Pool Finishes, every pool we build is a reflection of expert craftsmanship, structural precision, and thoughtful design. We collaborate with buildersand contractors to bring custom pool visions to life, from initial construction to the final finishing details. We do not work with homeowners.

Our portfolio showcases a wide range of projects, including sleek modern designs, resort-style retreats, and timeless backyard escapes. No matter the scope or style, our team has the experience and capabilities to execute each project with accuracy, efficiency, and lasting quality.

Browse our work to see how GSI Pool Finishes helps transform outdoor spaces into stunning, functional environments built to be enjoyed for years to come.

  • 40+ Years of Proven Experience

    With more than four decades in the swimming pool industry, GSI brings unmatched knowledge, scale, and hands-on expertise to every phase of construction and renovation.

  • All Work Performed In-House

    We never rely on subcontractors. Every project is completed by our own trained employees, ensuring consistent quality, accountability, and craftsmanship from start to finish.

  • Industry-Leading Warranties

    Our work is backed by some of the strongest warranties in the industry, giving our partners and clients long-term confidence and peace of mind.

  • Premium, Carefully Sourced Materials

    We utilize high-end finishes and materials that are meticulously sourced and shipped to meet our exact standards for durability, beauty, and performance.

  • Licensed, Insured & Safety Focused

    Every GSI project is performed by fully licensed and insured professionals who prioritize safety, jobsite organization, and strict adherence to industry standards, ensuring every project is completed responsibly and professionally.

Our Affiliations

We hold ourselves to the highest industry standard to ensure we meet and exceed our customers’ expectations.
North East Pool and Spa Association
The assocaition of pool & Spa professionals
National Plaster Council

What They Say About Us