I was hoping to get some feedback on a project I was considering for early this fall. I have a screened in porch on the back of my house that is 16' X 30'. I have already replaced all of the screen and all of the drywall on the upper part of the walls etc. and now I want to improve the floor. I have layed tile indoor many times but never outdoors... just wondering if laying tile outdoors is any different due to moisture and humidity. For instance, do I need a different type of thinset or grout or perhaps mix it differently etc. Once in a while, there is moisture on the concrete when the humidity is real high and also when it rains, there is usually a little bit of water, nothing drastic but it does get damp once in a while.

Thanks!