Investigation of the Condensation Potential Between Wood Windows and Sill Pans in a Warm, Humid Climate

摘要

As building envelope designers have become more attuned to the need to prevent moisture intrusion, window flashing has become more of an issue. Sill pans are an important component of many window flashing systems. These pans are constructed from a variety of materials, including metal, and are located beneath the window sill. Sill pans are also typically formed to have back dams and end dams so that they can redirect water that leaks through the window to the exterior. Draining the water to the outside requires a vented area between the sill pan and the window sill, and there is speculation that environmental humidity can condense within this space in warm, humid climates.