We live in Panama where the weather is harsh. It rains a lot here, can get windy and dusty ... We had travertine put on our pool deck. We grouted and sealed, and yet immediately it started to become a horrible mess! Right now it is raining just about every day and the moldy Mildew is everywhere. I suspect we will either tile over it, or chip it out and start over with tile which is a good option here since the temperatures do not swing greatly ~ it’s always between 79-93 here, all year round.
