J
JohnK
An exPat living inthe Netherlands. I had a problem with a leak in my shower. Eventually traced it to a problem with the grout between the floor tiles.I have replaced the offending grout with a powder called eurocol 706 speciaalvoeg WD which is a a flexible and watertight grout.It has a high synthetic binder content and additives.The problem is that I cannot get the grout to harden After 3 days it is still soft enough to remove with your nail.Any suggestions?