Horrified about subpar tile installation? Become a Certified Tile Installer. That's according to John Trent CTI #277, a former tile installer, and former territory manager for Schluter Systems since 2012. He was one of those subpar installers who now encourages all installers he meets to become Qualified Labor.
John is next in the CTEF Blog series about Qualified Labor based on an article in TileLetter.com titled John Trent: Certification - fighting the good fight against sub-par installations.
Note that this article is part of the CTEF classics, capturing valuable insights from the first CTIs.