I am working on my first tiling project. I am going to install 4-1/4” ceramic tiles on my kitchen countertop. I have installed 3/4” inch exterior plywood then added hardiboard attached with adhesive and hardiboard screws (per suggestion from Home Depot employee).
Also, Home Depot advised Omnigrip adhesive to install the tiles, said it would be easier for a beginner. Would thinset be better?
I live in the desert so humidity is not a problem, just the opposite.