I'm looking for advice on what to use to make a moisture proof/resistant room in my basement. I did a google search but couldn't find any good answers. I live in New England where it gets nice and humid in the summer, especially in my basement. I have run a 70 pint a day dehumidifier and it didn't come close to making a dent in the humidity. My basement is a cement floor with the bottom half of the walls rocks and cement. The upper half of the walls in the basement are brick. The cost and time to put the water sealing paint on all the walls and floor in the basement would be prohibitive. My plan is to use the water sealing paint on the floor and build a free 10'x10' standing room just for storage ontop of that area using 2x4's and plywood. I'm wondering what is recommended to put on the walls to prevent or slowdown moisture from getting through. I'm going to put the dehumidifier in the room to take out moisture which gets through. Any help will be greatly appreciated.