We have decided to finish our basement. Our house is @15 years old, we have lived here 8 years. When we move in there was some moisture in the basement, attributed to the previous owners neglect of the gutters, etc. Our first step is to "waterproof" the basement (other than a musty smell after heavy rain, we haven't had any trouble). We have pulled everything away from the walls and purchased a heavy paint that is supposed to keep moisture, etc, out. Along the base of the wall, there is a gap in the concrete floor, it doesn't seal to the cinder block. My husband wanted to pour concrete in to seal it up but then became concerned that it might cause the concrete floor to buckle. Is the "seam" there for a purpose? Can it be sealed by concrete, caulk...? Does this indicate a structural problem? (Our walls and ceilings are pretty much the same as when we moved in, there are no cracks in the ceiling or walls, etc.) We would appreciate hearing from anyone who has seen this before, advice, recommendations for contractors who might help us...We would also like to improve our roof/gutter system to keep a dry basement. This is a major job, even though we are doing some work ourselves, we have a loan and are planning to hire professionals for the "tough" work, so we really don't want to dry wall/finish the basement and then find out we still have a moisture/water problem. TIA for any help/advice you can give.