I layed the floor in our bathroom and im a complete novice. To get the floor level i had to put the grout a little bit thicker than it said, ruffly 6-7mm. i left it for 4 days with the heater on and the door shut none of them went off. i used a water base grout. thing is our concreat floor is very shiny and water sits on top of it in puddles, does any one know if it might have some thing in the original floor that is stopping it going off or should i try a fast drying/chemical grout? please help.
