Ask the Experts | Ask the Door Guys | What is Thermal Bow?


What is Thermal Bow?



Thermal Bow is a temporary condition that may occur in certain applications of metal door openings. The cause of thermal bow is differing temperatures on either side of the opening. When steel doors experience a temperature difference, the door can begin to distort either toward or away from the frame stop. The effects of the bowing can cause the opening to function poorly, or even not at all. Since bowing is triggered by direct sunlight, a solution would be to paint the door and frame a light color or Installing an awning above the opening to block the sun.


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