How should I handle moisture/insulation as I finish my basement?
I live just north of Pittsburgh, Pa. and this is what I did to finish my basement. After my house was built I waited 2 years to finish the walls. I tapped plastic to random spots on the walls to see if moisture was coming through the concrete block. When I was sure it was safe to finish the walls I coated all below ground wall areas with a Drylock material. My walls were insulated with 1 inch T&amp;G styrofoam against the block with the seams taped with 2 inch "suretape" brand  tape used with duct work. The  area was studded with 2X4's, fiberglass insulation, drywall and painted. No leakage of any type. This worked for me. Make sure that you add enough supply and return registers to this area and if you have A/C make sure that the supply registers have dampers that you can close in the summer. (cold air falls to the lowest levels) Basements are usually the coldest areas in the house to heat during the cold months. I also run a dehumidifier in the summer to control indoor humidity and run the furnace fan on a low speed 24/7. The basement has been dry and comfortable for 18 years and counting. Hope this helps.