My friend Angel has endured plenty in this new kitchen. And the installation of this small piece didn't go so smoothly. That's because the wall bows out a bit in the center. I can handle concave, but it's hard to get the edges to stick to the wall when the center is out too far.
So I did the best I could, and I'll go later and install some tile strips around the mosaic, to frame the piece better and keep water from being able to get behind the bottom of the mosaic.
I think it'll be OK. As long as it doesn't come crashing down after a few hours.
For installation, I used a super-duper Liquid Nails construction adhesive, but I'm not crazy about that line of products. I ran out (I can't believe I emptied a whole tube on that wall!) and had to use whatever else I had in the truck. But we're cool.
I even painted the wall where the adhesive stained it brown.