Passive waterproofing relies on “sealing” the foundation from the outside, which eventually fails as hydrostatic pressure builds. Active Water Diversion involves moving water away from the foundation through a dedicated drainage system (like a French drain or a sump pump). At Basement Expert, we believe that fighting water is a losing battle; instead, we manage it. Our NDS-certified specialists design systems that relieve pressure and redirect water flow, providing a more permanent and reliable solution for Seattle’s heavy rains.