Lay the Tile. Mix thin-set mortar according to directions. Use the flat side of trowel to apply the thin-set and the comb edge of the trowel to create grooves (Image 1). This will give you a really tight connection to your slab. Set the tiles by gently sliding into place. Use spacers to achieve consistent gaps between tiles (Image 2).
The Costs. Minimum cost of bathroom wall tiling: $2.50-$3.00 per square foot. Maximum cost of bathroom wall tiling: $7.00-$8.00 per square foot. When considering a bathroom wall tiling project, homeowners are often most concerned with the costs associated with the installation.
What's the average cost to install bathroom tile? In general, retiling a full bathroom, including shower walls and flooring, can cost $10,000 to $25,000, Costhelper.com says. But many times, the complete cost to remodel a bathroom is less than this figure.