Profiles in Terrazzo: William Ketcham

Profiles in Terrazzo: William Ketcham

Profiles in Terrazzo


William Ketcham
Architect, Principal
Stantec Architecture Inc.

After earning his BArch at the University of Kentucky, Bill Ketcham moved to Chicago and has been working in architecture ever since. Ketcham started working with terrazzo almost from the onset of his professional career, and he is a great admirer of the product. “Terrazzo has an implicit quality, a timeless tradition,” stated Ketcham, “and it is sustainable when used with recycled content.” Ketcham has used terrazzo in a wide variety of projects, including Ravenswood Kinowerks and the Johnson Center at North Park University. The terrazzo floors in both also feature radiant heat.

Profiles in Terrazzo: William Ketcham
Ravenswood Kinowerks

One of his favorite projects is the Old Town School of Folk Music. The terrazzo floor in its public space has recycled content consisting of brown beer bottle glass, which symbolically links to the casual nature of the place and the type of music played there: Imagine people casually sitting around listening to and playing music while having a beer. “That was a fun project to do.”

Bill Ketcham understands the importance design plays in architecture, and that is one reason he likes terrazzo. Ketcham appreciates the plastic nature of terrazzo, which gives the designer significant latitude in design opportunities, much more so than with simple rectangular flooring options. And Ketcham points out that terrazzo is also durable, easy to maintain, easily fixed when damaged, and sustainable when using recycled content.

Profiles in Terrazzo: William Ketcham
Old Town School of Folk Music

Overall, Bill Ketcham loves the longevity and quality of terrazzo, and he aspires to incorporate it into all his projects. For instance, Ketcham has specified (not yet built) terrazzo for the radiant heating and cooling floors in a zero net energy project for the California Military Department.

Profiles in Terrazzo: Barbara Palm

Profiles in Terrazzo: Barbara Palm

Profiles in Terrazzo

Barbara Palm

Barbara Palm
Director of Interiors
Anderson Mikos Architects, LTD

When Barbara Palm of Anderson Mikos Architects first encountered terrazzo some 20 years ago during a hospital renovation, she was not at all familiar with the product and found the prospect of working with it a little daunting. There was a lot to learn about the product, such as the finishing process, and many aspects—both aesthetically and practically—had to be considered. It was a lot to take in. But it’s fair to say Barbara Palm is now a convert. She often recommends using terrazzo for large, heavy foot traffic areas.

Through her experience designing interiors for a wide range of medical facilities, Palm has come to favor terrazzo because it is durable, impervious (and therefore antimicrobial), stain resistant, and easy and inexpensive to maintain. But mostly Palm appreciates terrazzo because of the versatility it offers in colors and patterns. Terrazzo “really lets you run with it for creativity,” said Palm. “Terrazzo lets you push the boundaries of flooring.”


Perhaps her favorite terrazzo project was the Operating Rooms and Main Lobby expansion project at Rush Copley Medical Center in Aurora, Illinois, which represented the culmination of years of Anderson Mikos design concepts and projects for Rush Copley. She first introduced the hospital to terrazzo for its Emergency Department Entrance and Waiting Area, which was then carried through the public corridor to the rest of the facility. The recent new Main Entrance and Lobby have become the jewel of the hospital.

Barbara Palm would like to see more in the way of terrazzo tiles that might make it easier to work in smaller areas. While a few manufacturers create such tiles, the tiles tend to be limited in color and look and don’t have the sparkle that comes from such add-ins as mother of pearl or glass. The tiles also lack differential sizing that would provide more depth.


Palm believes the best creative results grow out of the designer and client collaborating as a team on the overall design. When it comes to that creativity, Palm suggests getting to know your terrazzo reps. They will give useful ideas about ways to use terrazzo to its best effect.

Terrazzo: The Geometry in Our Floors

Terrazzo: The Geometry in Our Floors

The Geometry in Our Floors

Geometry and shapes are all around us. Terrazzo provides the opportunity to mirror these shapes on the floor beneath our feet. By using lines and curves, a floor can guide us, inspire us, or pique our imagination. Take a look at “The Geometry in our Floors” as we showcase some of the possibilities of lines and curves.

Terrazzo: The Colors of Possibility

Devos Children's Hospital terrazzo colors

The Colors of Possibility

Terrazzo offers nearly limitless design possibilities. By customizing colors and aggregate combinations, spaces become one-of-a-kind. Whether you are looking for intricate multi-color designs, or seamless one-color designs, terrazzo offers it all. Take a look at “The Colors of Possibility” as we showcase all the colors of the rainbow.

Best of NCTA 2018

Time-tested terrazzo techniques show breadth, beauty, and versatility.

Best of NCTA 2018

Breadth, Beauty, Versatility

Each year, the North Central Terrazzo Association gathers to discuss advances in technology, to refine industry techniques, and to build camaraderie across our association. We seek to make time-tested terrazzo techniques even better.

We also look back at the projects completed by our association members that show the breadth, beauty, and versatility of terrazzo flooring. Many of these projects are award-winning designs and installations, and they include hospitals, colleges, research centers, sports arenas, transportation hubs, and churches.

Join us as we celebrate some of the finest projects the contractors of the North Central Terrazzo Association have created.

The Spirit of Louisville

Louisville airport terrazzo pattern by the airport shops

The Spirit of Louisville

Louisville International Airport, Louisville, KY

When you walk through the Louisville International Airport, the spirit of the city unfolds in a cultural treasure trove, mapped on the airport’s award-winning terrazzo floor.

The energy of the race comes through with bold patterns of horseshoes, silks, and jockey helmets. You can get a glimpse of a flying horse in the night sky with a celestial inlay of the Pegasus constellation.

Vibrant fleurs-de-lis bring in elements of the city seal and the Louisville heritage. Louisville Sluggers radiate in starburst patterns. Bourbon barrels form playful spheres. Violins delicately shadow the floor.

Not only will you find the themes that share the air of Louisville, you will find striking and sophisticated linear patterns with cool colors that welcome you to the departure gates.

As part of a $9.5 million Terminal Enhancement Project, the terrazzo design covers main floors, corridors, and stairwells. Overall, the design used 31,000 linear feet of divider strip and 32 colors of epoxy terrazzo. Each color shines and each inlay sparkles in this intricate design that brings the spirit of Louisville to the millions of travelers that walk through this terminal.

The design and installation won a prestigious 2018 Honor Award from the National Terrazzo and Mosaic Association (NTMA).

Click to view larger.

PROJECT NAME: Louisville International Airport Terminal Enhancement Project
OWNER/CLIENT: Louisville Regional Airport Authority (Louisville, KY)
TERRAZZO CONTRACTOR: Rosa Mosaic & Tile Company (Louisville, KY)
ARCHITECT: Alliiance (Minneapolis, MN) and Stengel Hill Architecture (Louisville, KY)
GENERAL CONTRACTOR: Wehr Constructors Inc. (Louisville, KY)
EPOXY RESIN SUPPLIER: Key Resin Company (Batavia, OH)
DIVIDER STRIP SUPPLIER: Manhattan American Terrazzo Strip Company (Staley, NC)
AGGREGATE SUPPLIERS: Arim, Inc.; Klein & Company; Terrazzo & Marble Supply Companies
PHOTOGRAPHY: Tim Furlong Jr.

long corridor with terrazzo flooring in Louisville International Airport terminal

Winning Designs

terrazzo flooring design st. ignatius chicago

Winning Designs:

Highlights of beauty and quality

We proudly highlight some of the past National Terrazzo and Mosaic Association (NTMA) honor award winners within the North Central Terrazzo Association (NCTA), to show the breadth, beauty and versatility of terrazzo flooring. Award-winning designs and installations from NCTA contractors include hospitals, colleges, research centers, sports arenas, transportation hubs, and churches.

The NTMA judges submissions of terrazzo installations each year and awards only the top projects in craftsmanship, scope and design. Founded in 1923, the NTMA establishes national standards for terrazzo installation. All members meet rigid proficiency standards while participating in continuing educational seminars. The NTMA generously provides complete specifications, color palettes and general information to architects and designers at no cost.

Replacing Brick and Carpet with Terrazzo Color

Replacing Brick and Carpet with Terrazzo Color


When St. Ignatius College Prep sought to replace brick and the carpeted flooring, it looked to the versatility of terrazzo. The private college prep school near Chicago’s West Side called in Chicago-based Amici Terrazzo to design and build a seven-color terrazzo floor that would preserve the school’s historical qualities while serving its needs as an event space. The finished product was upgraded from the building’s worn-down brick and carpet flooring.

For Amici co-founder Carmine Tucci, the color selection, the use of the different stones and the ability able to incorporate the school colors to make it blend in a sophisticated way were the highlights of this project. Given that the school also functions as an event space and has an award-winning garden, the design of the flooring helps to make it all flow together well, he said.

Replacing Brick and Carpet with Terrazzo Color

Though more modern terrazzo materials were used, it was important that the finished design looked original, but it was a bit tricky to blend blue, brown, maroon and gold hues to match the ceiling and other existing aesthetics, Tucci said. It would have been easier to put in a border or come up with a simple pattern, but the chosen pattern really represented the age of the school.

“I really enjoyed the color selection and using the different types of stone and being able to use their school colors and make it blend without it looking like a grade school or a children’s place. It’s more sophisticated than a typical school pattern,” Tucci said.

Replacing Brick and Carpet with Terrazzo Color

Despite the time constraints, Tucci said the project went well, and he enjoyed having more freedom to come up with design ideas. His design ideas were well received, as the project won an NTMA 2016 Honor Award.

“I brought them a bunch of sketches and pictures and worked with their in-house project supervisor to come up with a nice pattern,” Tucci said. “I’ve usually been able to have influence on design and color selections, but not this much. It felt good that they trusted me.”

Replacing Brick and Carpet with Terrazzo Color

PROJECT NAME: St. Ignatius College Prep
OWNER/CLIENT: St. Ignatius College Prep (Chicago, IL)
TERRAZZO CONTRACTOR: Amici Terrazzo (Elk Grove Village, IL)
ARCHITECT: Amici Terrazzo (Elk Grove Village, IL)
GENERAL CONTRACTOR: Amici Terrazzo (Elk Grove Village, IL)
RESIN SUPPLIER: Terrazzo & Marble Supply Companies (Wheeling, IL)
AGGREGATE SUPPLIER: Terrazzo & Marble Supply Companies (Wheeling, IL)
DIVIDER STRIP SUPPLIER: National Metal Shapes (Delaware, OH)
PHOTOGRAPHY: Dean Imler Photography

Terrazzo Targets Tomorrow’s Minds With Interactive Design

Brooks Elementary terrazzo

Brooks Elementary School isn’t your typical elementary school. You won’t find mascots on the walls or floor. The walls aren’t painted only school colors, and the school name around every corner.

Instead, you will find elegant geometric designs reminiscent of a high-end office building, with just the right pop of color to intrigue the young minds that walk the halls.

Throughout the project, Rosa Mosaic worked closely with the architecture firm discussing the high polish finish process, maintenance, and color development. These colors are reflected on the floors, walls, and ceilings, creating a vibrant and interactive educational space.

As soon as a student enters the school, this interaction begins with a broken star compass terrazzo design.

Brooks Elementary terrazzo hallway

“To the children, the broken star and the directions show that the elementary school is the center of their world and everything goes out north, south, east, and west from there,” Rosa Mosaic’s Anna Tatman said.

In another hallway a purple, green, and white checkerboard transitions into an orange and purple hopscotch pattern. “It’s very directional,” Tatman said. “It draws you into that corridor and makes you want to hop down the hall.”

No wonder the intriguing designs at Brooks won an NTMA Honor Award.

“The district was so very excited about the quality of finishes that were going into the building. They felt like terrazzo was an investment that was worthwhile because it would be helping to teach the minds of tomorrow,” Tatman said. “They really did put the dollars into where the kids were going to be. It’s a testimony to what we need to concentrate on when we work with schools—the kids.”

Brooks Elementary terrazzo corridor

Project: Brooks Elementary School (Brooks, KY)
Client: Bullitt County Public Schools (Shepherdsville, KY)
Terrazzo Contractor: Rosa Mosaic & Tile (Louisville, KY)
Architect: Sherman, Carter, Barnhart PSC (Louisville, KY)
General Contractor: Derek Engineering, Inc (Louisville, KY)
Material Suppliers
Resin Supplier: Terrazzo & Marble Supply Companies (Wheeling, IL)
Aggregate Supplier: Southern Aggregates (Staley, NC)
Divider Strips: Manhattan American Terrazzo Strip Co. (Staley, NC)
Photography: David Laudadio

NTMA Honor Awards: Cleveland Hopkins International Airport

Cleveland Hopkins International Airport

With more than 11 million visitors a year, the Cleveland Hopkins
International Airport serves as the first and last impression of the city to
many. To establish Cleveland as the artistic and culturally diverse
metropolitan that it is, the CLE Art Program was created.

The project transformed the airport into a local art gallery. Like most
galleries, some exhibits will come and go, but one will remain—the
Terrazzo Art Project. With a theme of “Cleveland—A Green City on a
Blue Lake (Past, Present & Future),” the flooring features artwork by
seven Northeast Ohio artists, including a group of local high schoolers
and a TSA officer.

During the renovation, more than 100,000 square feet of black carpet
was replaced with epoxy terrazzo. The retail space and concourse
include the locally designed artwork.

Cleveland Hopkins

“The artwork references the color and light patterns from Cleveland in a
very abstract fashion,” said Todd Mayher, project manager with Westlake
Reed Leskosky.

Cleveland Hopkins International was so thrilled with the results of the
renovation that it has chosen to move forward with more renovation,
adding terrazzo flooring in the remaining areas of the airport.

“It’s a hard surface for rolling luggage. It’s easy to clean,” Mayher said.
“It’s a timeless material. It will last a long time and won’t show its age.”

PROJECT NAME: Cleveland Hopkins International Airport (Cleveland, OH)
CLIENT: Cleveland Port Authority
TERRAZZO CONTRACTOR: O.A. Bertin Company (Cleveland, OH)
ARCHITECT: Westlake Reed Leskosky (Cleveland, OH)
GENERAL CONTRACTOR: Kokosing Construction Company (Fredericktown,OH)
TERRAZZO MATERIAL SUPPLIERS: Terrazzo & Marble Supply Companies (Wheeling, IL)
DIVIDER STRIP SUPPLIER: National Metal Shapes (Delaware, OH)
PHOTOGRAPHY: Anita Bertin DeGreen