What is the appropriate tile-spacing for a four-inch (4″) tile used in a bathroom? I watched a show called Log Cabin Interiors this weekend and the host was installing tile in the foyer. He made a generalized comment that a 6″ tile should be spaced with a 1/2″ grout cavity, and a 4″ tile should have a 3/8″ grout cavity.
There is a reason why I’m asking, but I thought I would see if there were some subs that specialized in installing tiles. Also, is it necessary to use a masonry grout material, or is there reason why an elastomer cannot be used?
Just curious. BTW, the grout spacing in the bathrooms are less than what was stated, but I suppose I was looking for minimum values for a rule-of-thumb.