In most climates, an overhang is required for wood doors and suggested for all exterior doors. Keep in mind that overhangs are always wise, even for steel and fiberglass doors.
The climate and the direction a door faces also play a key role in determining a proper overhang. Typically, southern and western exposures are harshest. With southern exposures, the sun beats down on the door from sunrise to sunset. In western exposures, the door receives sunlight in the hottest part of the day.
A useful formula to help determine the correct overhang (in most cases) is: Y = 1/2X. For example, if the measurement from the base of the door to the bottom of the overhang is 10 feet, then the overhang should extend at least 5 feet. Please consult the following chart and adjust the length of the overhang as needed:
|Direction the door faces|
|Desert||Y = ½X||Y = 2X||Y = ½X||Y = 2X|
|Ocean||Y = ½X||Y = X||Y = ½X||Y = X|
|Wet||Y = X||Y = X||Y = X||Y = X|
|Mild||Y = ½X||Y = X||Y = ½X||Y = X|
Without correct overhangs, doors with a southern, southwestern, southeastern or western exposure will require more frequent maintenance.
With proper overhangs, doors may face any direction (north, south, east or west), but they may require maintenance. Wood doors, for instance, may need to be refinished every two to five years. Check out our website for refinishing instructions.
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