No picture 800 psi. It was random spots. The grout came out it was eroding. It wasn't like an air pocket. It was like it was soft and softer in some spots.
I am very thorough in inspecting every hard surface job now
If you didn't mention it to the customer before you started the customer thinks you ruined her grout,,, Go get some grout and regrout for her,,, its a quick process !!!!I cleaned tile in master bathroom and grout came out. It was really soft grout like it was mixed wrong. House is three years old.