Waterproofing and drainage
Can you Waterproof Basements From the Inside?
...concrete basement walls due to moisture pressure or rusting internal rebar reinforcement.
Mold/Condensation on walls: Be careful here. A damp patch isn't always a leak; it could be poor insulation creating a dew point where interior humidity condenses on a cold wall.
Mold/Condensation on your furniture or stuff: Also b...
