I have a new house with poured concrete basement walls. Tarred? outside.Painted with white sealer inside. Painted floor. Allmost 1year old. NO leaks. My plan - Build 32"wide shelf mounted to walls and 3 or 4 penisulas. Has anyone drilled holes and lag bolted or used nailgun to attacth stringers to walls? (I"ll use rolled styrofoam between wall and wood). I Don't want to stud out walls or partition room off from rest of basement. Any ideas how to mount shelf or control humidity? Thankyou for any help. Don