
I ripped out the old acrylic surround which was made up of around 5 large pieces that were glued to the wall. Overall, it did a pretty good job keeping the water in the bathtub, but it didn't match the tile that filled the rest of the room.
For this job I used 4 1/4" square white tiles and white unsanded grout. With 1/16" grout lines, unsanded grout was the recommended choice. They add sand to the mix whenever your grout lines are larger, say 1/8" or more. The sand helps the grout stay firm in the larger gap.The unsanded grout also has a different feel to it even though the process is the same. It feels more like a gooey slime while the sanded grout feels more like mortar. I actually found it easier to work with and it wasn't quite as messy as the sanded grout.
Anyway, the project turned out great. There were some interesting transitions to old tile and trim that had to be caulked with silicone, but it came together well.
-Peter
www.CarpentryGuy.com

After marking an outline of where your notch needs to be, make a series of cuts to the depth of your mark. After making the cuts, the small pieces easily break off by hand, or with the nippers. 








I add a little liquid nails to the wall and put the panels up next. Since they'll have trim covering the top and bottom edges, I'm mainly concerned with getting them level vertically so that the beads don't lean.



To lay the Hardibacker I first cut it to fit by scoring it and snapping it. Then, I spread a bed of thinset with my 1/4" notched trowel and nailed it in place with 1 1/4" galvanized nails. Once it was nailed, I covered the two seams with mesh tape and filled them with thinset as well, trying to keep it as flat as possible.
The gray looks great next to the white tiles. Before grouting it's important to try to scrape most of the hardened thinset out of the grout lines. The grout needs to fill the space between the tiles so the thinset has to go.