A door pan, specifically designed for 36″ prehung doors, is a crucial element for proper water drainage, helping to prevent moisture damage in door installations. A door pan (also known as a sill pan) is a protective tray installed under the threshold of an exterior door. It serves as a barrier that collects and directs water away from the door frame and subfloor, preventing water ingress that can lead to significant structural damage, including rot and mold growth. Importance of a Door Pan
• Moisture Management: The primary function of a door pan is to manage moisture. It prevents water from penetrating the wall below the door, effectively “catching” any water that may enter during rain or snow events
• Protection of Structure: By ensuring that water drains away from the door and subfloor, door pans help maintain the integrity of the building’s framework, preventing costly repairs due to water damage.
Why is a Door Pan Necessary?
Doors are considered a penetration to a stucco wall – one that requires proper flashing and proper sealing to function at the desired level.
If a door, French, slider, double, single, balcony, terrace, or any other exit to a surface where the door has full exposure to wind-driven rain, and has a stucco wall beneath it, a door pan is required.