Hi guys, would appreciate your help on the following question. Thanks Recently I heard from a colleague that he come across a condo living room ceramic flooring grout lines is extremely smooth and also when you walk on it, you dont feel the gap. Most important thing of all, after 3 years the grout color remains the same. I try to ask a contractor about this and he quoted me 1200 for redoing the above mention special grout for my living room (around 40 sqm). Anyone has any idea what is so special of this grout and is the cost very ex?