All custom mosaics from Green Street Mosaics are handmade from scratch. I use a sturdy substrate (either primed wood or wedi board depending on size and where the mosaic will be used) I hand cut all glass tiles, and apply them individually. After placing the tiles and grouting, each piece of mosaic tile is polished and the entire piece is protected with multiple coats of sealant so any possible moisture does not warp or stain the grout. The sides and the back are painted a corresponding color, and hanging hardware is attached securely to the back.