I cut a 44 inch ring out of cedar to hand between 2 post. I plan on securing 4 cedar boardsto the back of the circle. As you are looking at the front of the ring you will see the face of the boards. I am going to remove material from the front of the boards, the same thickness of tiles (tiles spell out my address). I will also seal the boards. My question is how do I secure the tiles to the cedar boards. Any advice is welcomed.

Thanks,
Jerry