How to Adjust Bi-Fold Doors to Uneven Floors

Adjustment Pin

• 1

  Locate the adjustment pin underneath the door itself on the stationary side of the door.

• 2

  Locate the asterisk-shaped head on the adjustment pin.

• 3

  Twist the head to the right or the left with a pair of pliers or a wrench. One direction raises the door, and the other lowers it, according to how the door was installed.

• 4

  Raise the head of the adjustment pin until the bi-fold door no longer snags on the uneven floor.

Cutting

• 5

  Mark a point on the bi-fold door that is between 1/4- and 1/2-inch above the highest point that the bi-fold door must pass over with a pencil.

• 6

  Take the bi-fold door off its brackets by lifting the door off of the rack that holds it to the top of the door frame.

• 7

  Draw a line across the bottom of the door, using the point you made in Step 1, to determine the height. Use the pencil and a ruler to get the line straight.

• 8

  Cut a shallow guideline into the door, following the pencil line, with a utility knife.

• 9

  Cut on the guideline on the bottom of the door with a miter saw.

• 10

  Sand the newly-cut edge down with 100-grit sandpaper.

• 11

  Rehang the bi-fold door on the brackets.