Welcome to the Basement Waterproofing group of SmartGuy.com. Feel free to interact with other professionals from across the world. You can find professionals, find deals on services, find professionals who might barter, or simple post questions, comments, or suggestions. Basement waterproofing involves using techniques and materials to prevent water from penetrating the basement of a house or a building. Waterproofing a basement that is below ground level may require the application of sealant materials, the installation of drains and sump pumps, and more.