Mind the Gap: Space as a Mosaic Design Element with Kelley Knickerbocker

Exploring the other dimension of mosaic

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Have you ever wondered what would happen if you did not fill your entire substrate with tesserae? Does that seem foreign to you? If leaving space on your substrate is something you would like to learn on your mosaic art journey we have the course for you!

In this online course, Kelley Knickerbocker introduces her signature methods for using space as a design element. When mosaic is the functional skin on walls and floors, full-coverage density is mandatory. But in fine art mosaic we can leave spaces for contrasting effect without compromising structural integrity.

But why design open spaces into mosaic? Well, sometimes it's a purely practical consideration of time or budget. But it’s an aesthetic consideration as well. It's precisely because mosaic is so dense that incorporating space can be so visually effective. Dense areas appear denser, and the void space(s) deeper, calmer. Like juxtaposing two complementary colors: they enhance one another like no other combination can.

There are many approaches to incorporating open space into mosaic. In this online course Kelley covers six more uses for open space and shows you how to mix, match, and combine them. In this course Kelley demonstrates in real time how to build an ungrouted mosaic start to finish (in materials of your choice) setting directly into thinset mortar, that incorporates three or four different uses of space. As you build you'll be learning how open spaces can strengthen a design and allow you to work larger (and faster!); how to apply and manipulate mortar with a steel spatula, set your tesserae around open areas, and finish off the surface of open areas of mortar to keep them consistent and create a clean and fabulous effect.

This is a great course for anyone starting out in mosaic art or has more experience. There is a PDF with suggested tools, materials, and resources to get started.


"Thank you, Kelley, for articulating your processes in an artistic manner. You go beyond the how-tos and explain the creative reasons for you your choices." Nancy R.

"Fabulous workshop Kelley. You have provided excellent strategies to explore regarding space within and around the mosaic. A sensitive approach to design. Thanks so much." Susan G.

Your Instructor


Kelley Knickerbocker
Kelley Knickerbocker

Visual artist Kelley Knickerbocker left a 22-yr administrative career at the University of Washington in 2006 to found a mosaic studio (Rivenworks Mosaics, Seattle) and direct her accumulated skills in project management and planning toward designing/fabricating/installing mosaic artwork for public, commercial, residential and gallery environments.

Kelley’s ruggedly dimensional mosaics, in a broad range of materials, are a textural distillation of her fascination with contrast, material properties and the technical challenges of mosaic construction. Sharing that fascination and learning from other art makers are keys to the freshness of Kelley’s mosaic practice, and she travels extensively throughout North America speaking, collaborating and teaching in-depth workshops on mosaic style and technique.

Kelley’s fine art mosaic panels have been accepted to numerous national and international juried exhibitions, and many reside in private collections. She is an active member of the Society of American Mosaic Artists.


Frequently Asked Questions


When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
How does lifetime access sound? After enrolling, you have unlimited access to this course for as long as you like - across any and all devices you own.
What if I am unhappy with the course?
We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 14 days and we will give you a full refund.

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