Sign 1Joints that wander in width
The grout lines are wider in some places than others, and they collect dirt in the wide spots. On a large-format field the eye reads it instantly, even from a distance.
What went wrong
The field was set without spacers or a layout plan, so the accumulated error from each course was pushed into the joint instead of being designed out. Once three or four courses have drifted, there is nowhere left to hide it.
What it required
Joint width is set before the first tile goes down, not corrected at the end. A dry layout establishes where the cuts land and keeps the error distributed instead of concentrated.



