I have a few small cracks in the popcorn ceiling from moisture.

You'd have to knock a hole in every stud bay, and even then the plaster is so rough that the insulation would not get good penetration.... 

I had a painting crew come who said it was because of moisture from poor ventilation in the attic. 

You'll also need to apply a penetrating sealer.

There could potentially also be moisture ants and/or dampwood termites in thestump.

But of course, super expensive.Commonly now a days irrigation systems are 'required' to have soil moisture sensors or rain sensors which will keep them from going off the few days following a rain event. 

Those large issues being the following:The basement that is mostly underground is unfinished and the house sits on the side of a hill, so when it rains, the water builds up around a few areas and eventually over time will penetrate the concrete blocks in the basement causing mold to grow on the wall and make the Drylok start to peel in the areas that have the moisture issue.

It will also protect anything under the concrete from being damaged by moisture wicking thru the tile and concrete.I don't know what kind of tile you have, but if it is glazed you will not be able to color it. 

But I am planning on linking the fans to a moisture sensor instead of the light in the future, because one of the mirrors has moisture damage since the fan goes out the moment the light does (and so to many other mirrors in the complex), and the fan is also continuously running at other times when it doesn't need to be.  

I HIGHLY recommend one with a thermal imaging scan to detect moisture collection behind walls and roofs.