How does a weep system manage unwanted water?

Answer 1

If you are talking about a weep system in windows and doors: A weep system is a way to manage the water infiltration of a window. In vinyl or composite window construction, the frame and sash are hollow. Usually there will be small slots on the exterior of the window sill, sometimes they have a cover on them with a small flapper door. There will also be slots on the inside of the window sill below the venting panel of the window. If it is a hung window, usually you will be able to see two slots by opening the lower vent sash and looking in the sill directly below the vent. When it is raining, water will fill into the trough below the venting sash and will continue filling up until enough water column is built up to overcome the exterior air pressure, which will then allow the water to begin draining to the exterior weep slots, or enough pressure to cause the flapper doors on the weep cover to open.