On Jan 26, 11:46 am, "Greg Esres" wrote:
SteveF wrote:purpose of the acid is not to clean the floor but to etch the surface
for a better bond. I don't know if it's necessary for tiling but I
can tell you it sure is for painting. When in doubt, follow the
instructions and ventilate as much as possible.

Good advice, thank you.

Don't forget to dilute the acid at least 5 to 1 with water. % parts
water to 1 part acid and then rinse well.