If you already have a leaky basement, you should contact a specialist in basement repairs. The causes and remedies of basement moisture are too varied to be properly discussed here. Moisture from within . This happens when warm moist air contacts a cold surface. The phenomenon is best observed when you're sipping a cold drink on a hot day and the outside of the glass beads with water.
Condensation is a particular concern in cold climates.
And it's a constant threat to a building. It can collect in the attic, on water pipes, in crawl spaces, in basements, and on windows and doors. There are several ways to protect against condensation. For best results, use all of them. That way if one or two fail, others will back them up.