There should be a bottom sweep vinyl strip that attaches to the bottom edge of the shower door and it sounds like you may be missing it. The flap on the strip should help keep water from coming out under the door. If this component is missing, please contact our support team by phone at 866-731-8378 or by email at support@dreamline.com. We are available Mon-Fri from 8am-8pm, and Sat-Sun from 10am-6pm EST. Thank you for your feedback and for choosing DreamLine.