How To Fix Sagging Doors -
Doors With Metal Frames
Door sag is a common problem with wide, heavy, or older doors that use standard
Door Hinges.
Usually, mild cases of door sag are easily fixed by replacing worn or
damaged hinges. (See: Door Hinge Replacement Guide)
With severely sagging wood or metal doors,
with metal door frames (commonly found in commercial buildings)
metal door frames have Hinge Mounting Plates.
These are most often spot welded (on hollow metal frames), or screwed in (on aluminum frames) inside for each door hinge. Hollow metal doors use the same
Hinge Mounting Plates welded inside the door.
With most of the door's weight supported by the upper most door hinge, it is not
uncommon for the hinge mounting plates, metal door frame, and/or the hollow metal door itself to bend.
This causes the latch side of the door to hit the door frame at the top
and the threshold at the bottom.
Pictured above is a standard 3' 0" (36" wide) hollow metal commercial entry door, that
has a sag condition, caused by bent hinge mounting plates. As you can see, the top of the
door is severely hitting the metal door frame. To repair the problem, install a
Reinforcement Hinge at the top of the door.
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Fix a Sagging Door -
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