Originally Posted by fluffy10
We painted our walls with a water proof paint, but boxes or material even our tent box wicked moisture through the walls. This took several years, but we had a mess to go through not much mold, but not a pleasant odor. I will never put boxes or cloth next to the walls without an air space. I learned my lesson the hard way also. There needs to be an air space. I would have thought your contractor would have known this.
There is a paint that is used on repairing cracks in the cement tanks that I think will be the best, only it is black but I am sure that once it is dry properly , you will be able to paint it what ever color you want. I don't know what it is called in the US but ask your nearest plumber he will probably know and tell you where to get it. It is tar based and might smell a little but if you can stop the leaks any thing is worth looking into. Just my husband he called the stuff BLACKJACK. He says not the right name but it is close as I can give you.