Hello everyone,I just completed a kitchen upgrade for some clients two weeks ago before their vacation. When they returned this week they noticed some yellow discoloration (http://ift.tt/2w9qXWS). While they were gone, no cleaning was done when some chemicals could have been used. I used Muratic acid to remove the stains, chipped away at deeper areas, then re-grouted on Monday, sealed it with two coats on Tuesday, and yesterday the client is reporting more discoloration. What is happening? After completing multiple Kitchens/Baths projects, this is the only one that is having such a problem, and it happened quickly too. I've read other forums that I'm supposed to use distilled water as opposed to water from the faucet, could that have been the issue? Do I have to remove and re-grout the whole kitchen? Thanks all! via /r/DIY http://ift.tt/2xW1dSg
