Calculating the cost of tile installation is a simple matter of finding the needed square footage and adding costs for tiles, grout and grout sealer. Find the cost of installing tiles to a floor, shower or countertop with instructions from an experienced builder in this free video on carpentry. Expert: Robert Markey Bio: Robert Markey earned his BS in Physics from MIT in 1969 and his MS in Computer Science from the University of Massachusetts in 1982. Filmmaker: equilibriofilms Erik