Transform your kitchen or bathroom into a coastal oasis with a DIY sea glass backsplash. This eco-friendly and budget-friendly project not only adds a unique touch to your space but also tells a story of your love for the beach. Let's dive into the step-by-step process of creating your own sea glass backsplash.
Gather Your Materials
Before you start, ensure you have all the necessary materials. Here's a list to help you get started:
- Sea glass (a variety of colors and sizes)
- Mosaic adhesive
- Trowel
- Notched trowel
- Mosaic mesh sheets
- Thinset mortar
- Grout
- Grout float
- Sponge
- Sealer
- Grout sealer
- Protective gloves
- Protective eyewear
Prepare Your Surface
Before applying the sea glass, ensure your surface is clean, dry, and free of any debris. If you're installing the backsplash over existing tile, make sure it's sound and well-adhered. If not, you may need to remove and replace it.

Measure and Plan
Measure the area where you'll be installing the backsplash. Cut the mosaic mesh sheets to fit the space, leaving a small overlap at the edges. This will help with grouting later on.
Apply the Mosaic Adhesive
Using a notched trowel, apply the mosaic adhesive to the wall in small sections. Work quickly, as the adhesive can dry fast. Press the mesh sheet firmly onto the adhesive, ensuring it's well-adhered and smooth. Use the trowel to smooth out any bubbles or wrinkles.
Arrange Your Sea Glass
Now comes the fun part - arranging your sea glass! Start at the bottom of the wall and work your way up. Place the sea glass pieces onto the mesh, pressing them firmly into the adhesive. Vary the colors and sizes for a dynamic look. Remember, the goal is to create a natural, beachcombing effect.

Once you've reached the top, allow the adhesive to cure according to the manufacturer's instructions. This usually takes about 24 hours.
Apply Thinset Mortar
After the adhesive has cured, apply a thin layer of thinset mortar over the sea glass using a trowel. This will provide additional support and help with grouting. Allow the thinset to cure according to the manufacturer's instructions.
Grout the Backsplash
Mix the grout according to the package instructions. Using a grout float, spread the grout over the sea glass, working diagonally to ensure it fills all the gaps. Allow the grout to set for about 15 minutes, then use a damp sponge to wipe away any excess.
Let the grout cure for the recommended time (usually 72 hours), then apply a sealer to protect the surface. Finally, apply a grout sealer to enhance the grout's durability and appearance.
Enjoy Your DIY Sea Glass Backsplash
Step back and admire your handiwork! Your DIY sea glass backsplash not only adds a unique touch to your space but also tells a story of your love for the beach. With proper care, it will last for years to come, providing a beautiful reminder of your coastal adventures.
Remember, this is a DIY project, so don't be afraid to get creative and make it your own. The beauty of sea glass lies in its uniqueness, so embrace the imperfections and have fun with it!