How to install a bifold door

We show you the correct way to install a bifold door.

Tools needed

  • Tape Measure
  • Claw Hammer
  • Chisel
  • Phillips Head Screw Driver
  • Combination Square
  • Cordless Drill
  • Drill Bits
  • Driver Bit
  • Spirit Level
  • Pincers
  • Hand saw
  • Builders Ruler
  • Step Ladder
  • Packers
  • Assorted Screws
  • Assorted Nails
  • Pencil
  • Ear, Eye & Dust Protection

1: Fittings supplied

  • Spanner
  • Jamb Bracket
  • Bottom Pivot
  • 2 x Top Pivot / Guide
  • Timber Knob and Screw (Not included in QLD)
  • Assorted Screws pack
  • Head Track & Trims
  • Bifold leaves

2. Remove old door jam

Bifolds only require a flat jamb. If you require removal of an existing swing door jamb, refer to the "Hume How To" film above for a complete overview of this process.

3. Measure door opening

measure your opening for door

Measure your stud opening. Use these measurements to purchase your new Hume bifold. Try our new "Virtual Showroom" it is a great tool to help assist with your selection process.

Hume standard bifolds are manufactured to suit the opening sizes of 2060mm in height and 820mm, 770mm and 720mm in width. Allowance has already been made for track and hinges clearances.

4. Mark out for head track and bottom jamb bracket

Mark a centre line for the head track and bottom jamb bracket. Ensure they both line up and are centred in the jamb.

5. Install track

Ensure the track is cut to the correct length for the opening. Screw track to the head of the jamb (making sure the head is level) with the centre line above the intended centre line of the door when closed. Track should be firmly against the jamb at the pivot end towards which the door opens.

6. Install jamb bracket

Position the jamb bracket so that the centre line of the pivot hole is plumb with the centre line of the pivot socket in the top track. Screw the bracket to both floor and the jamb.

7. Seal bifold doors

On to the bifold leaves, remove all transport blocks. Seal your bifold top and bottom with two coats of undercoat and two coats of paint. Refer to manufacturer’s warranty.

8. Fit top and bottom pivots to the bifold leaves

Once sealed fit the bottom pivot in the leaf nearest to the jamb, several light taps with a hammer should insert it properly. Locate the top spring pivots and place in holes on the top of the bifold leaves. Hume standard bifolds come pre-drilled for this hardware.

9. Horizontal Adjustment

For horizontal adjustment of bifold loosen the adjusting screw on the bottom jamb bracket, slide the pivot socket in the required direction and tighten screw. Repeat this operation on the top pivot socket.

10. Vertical Adjustment

For vertical adjustment change the gap above the bifold. Using the spanner provided turn the adjusting nut on the bottom pivot clockwise to raise the bifold, anticlockwise to lower.

11. Install the bifold

To install the bifold, fold both leaves together and lower the bifold to locate the bottom pivot in the bottom jamb bracket. Engage the top pivot in the top track socket and the top guide in the track. More adjustment maybe required if your bifold is not plumb. Follow the vertical and horizontal adjustment procedure listed above.

12. Fit the architraves(Not included)

Fitting your architraves is only required if changing from a swing door jamb to a flat door jamb.

13. Fit door trims

Fit 16mm x 12mm trim against the track and down both jambs, ensure they are installed on the opposite side to the hinge. Position the trims so a slight pressure is exerted on the top guide when closed.

14. Fit bifold door knob

The door knob should be placed in the centre of the guide leaf, 880mm from the bottom for flush bifolds. For all other bifolds, at the centre of the mid rail.

Final check

Check your door operates correctly and revisit any of the steps if required.