Why does rainwater and melted snow lay in the bottom track of my patio door?
The drainage system (mentioned in the previous question) may be clogged. It’s normal for water to accumulate in the track during a wind-driven rain or snow storm, but the water should then drain to the outside through the “weep” system. This is usually a small hole visible on the inside track area and the exterior surface of the frame. Keep these weep holes clear and clean, but be careful not to damage exterior weep hole covers, baffles, or insect screens, if present.