I used to scrub mechanically sometimes still do depending but never less than 800 psi for cleaning. If I find cracks, air bubbles or hear hollow loose tiles just turn the job down. If it's good I make them sign the invoice that has a liability disclosure for the groutbpissibilites. We can plug the holes and missing grout but it's extra. Who knows if your tile contractor completely filled those grout joints? Do you still want us to clean it?
You guys probably don't have south of the border people coming over to work for cheap work not to standard like we do.
The JAGUAR MX-2 ETM @ cross-american.com