February has turned into my month for trying new projects, and today I’ve invited a dear friend to share one of hers. Millie from 2 Crochet Hooks is here to walk us through making a beautiful sea glass mosaic table that brings the shoreline to your porch or patio.
The finished table evokes the colors and textures of the ocean—salt-sanded glass, shimmering marbles and cool blues—so I’ll hand things over to Millie to tell the story and show her process.
Hi, I’m Millie from 2 Crochet Hooks! Thanks to Mary for inviting me to share this DIY. I discovered Mary’s blog last year and immediately fell in love with her humor and creativity, so it’s a treat to be here. Today I want to show you how I transformed a found table base into a sea glass mosaic tabletop—an easy, beach-inspired DIY that makes a great accent for outdoor spaces.
How to Make a Sea Glass Mosaic Table
This project began when we were having our front porch redone and the contractor lifted the old boards. Hidden beneath the porch we found all kinds of things—pots, an old battery, a military cot and, tucked away among the mess, a beige stand that looked like a small table, plant stand or bird feeder pedestal. I decided to rescue it.
After a quick coat of neon green paint and a few bright blue stripes, the base was already happier. The original insert—something like a plastic frisbee—wasn’t staying, so I improvised. After a recent beach trip I had collected small pieces of sea glass for a different project, and it suddenly clicked: I would make a mosaic tabletop using sea glass, flat-backed marbles and grout.
For the base of the mosaic I found a used pizza pan that fit snugly into the opening of the stand. I spread a generous, even layer of grout across the pan, working to create a level surface that would hold the glass and marbles in place.
It was late and my son and his girlfriend helped, so there were a few shadows in the photos. We used flat-backed glass marbles—often sold for vase filling—in two shades of blue and one bag of greens to get a beachy palette. The goal was a circular burst of color in the center, though the finished design became more organic and freeform, which I liked.
I arranged the marbles in subtle spirals between clusters of sea glass, creating texture and depth. It may not be perfectly symmetrical, but that imperfect quality enhances the handmade, beach-worn feeling of the piece.
Once the initial layer set, we pressed more grout into the gaps, filling the nooks and smoothing the surface so the glass and marbles would sit securely. My husband helped with this step, which made the work faster and more fun.
After the grout cured, I used a damp sponge to clean the surface and remove excess grout, allowing the colors and textures of the sea glass and marbles to shine. The result was a luminous, tactile mosaic that catches light beautifully.
To protect the mosaic and give it a durable finish I planned to seal it with epoxy, but my husband mistakenly brought home polyurethane. He poured most of a can over the top, thinking it would work. After a few hours we realized epoxy would be better for fully sealing and leveling the surface. We drained the excess polyurethane, left a light coat to seal what we could, and plan to finish with epoxy to create a strong, glossy top coat.
The table looks lovely beside a pair of folding Adirondack-style chairs we picked up as a fundraiser purchase. I plan to paint the chairs to coordinate with the table’s ocean hues, but even as-is they make a charming seaside vignette.
Working on this sea glass mosaic table turned into a family evening of creativity, and the finished piece reflects that collaboration. It’s a forgiving and fun DIY: you don’t need perfect geometry—just an eye for color, basic grout skills and a little patience while things set.
Take a moment today to share creativity and time with your family. Small projects like this add beauty to your home and create memories along the way. Thanks for crafting with me—Millie
Millie and Kristina write at 2 Crochet Hooks, where they share original crochet patterns, yarn adventures and other handmade projects as they explore sustainable living. Stop by their blog sometime to see more of their work.
What a lovely beachy mosaic! If only I had an old porch to dig up forgotten treasures, too. Thanks again to Millie for sharing this sea glass mosaic table and for inspiring a bit of seaside charm. Summer is approaching—time to prepare outdoor spaces and enjoy that salty air.