How to Install Bifold Doors Like a Pro | Step by Step Guide

Task Category: Doors

Skill Level: 2

Bifold doors are a versatile and space-saving solution commonly used in homes to provide access to closets, laundry rooms, pantries, and other tight areas where traditional swinging doors might be impractical. These doors consist of two panels hinged together that fold in on themselves when opened, allowing for greater access without occupying as much floor space. Their sleek design makes them ideal for maximizing usable space in compact rooms while offering an affordable and functional option for interior doorways.

One of the main benefits of bifold doors is their efficiency in small spaces. By folding neatly to one side, they provide a full opening without the need for clearance that traditional doors require. Additionally, bifold doors are easy to install, affordable, and come in a variety of styles and finishes to complement any home décor. However, they can sometimes feel less sturdy than other door types and may require periodic adjustments to ensure smooth operation, especially in high-traffic areas. Despite this, bifold doors remain a popular choice for homeowners looking to enhance accessibility and functionality in their living spaces.

Tools Needed:

• Hand tools (screwdrivers, etc.)

• Drill

• 18-gauge pin gun

• Tri-square

Supplies:

• Nails

Materials:

• Bifold doors and associated hardware

• 3/8" strips of cove or shoe molding

Quality Check Criteria:

• Bifold doors and associated hardware

• 3/8" strips of cove or shoe molding

Process for Installing a Bifold Door

Preparation

• Ensure a Properly Sized Cased Opening

• Note: This SOP does not cover building the cased opening. Refer to the appropriate instructions or link for the cased opening dimensions required.

  
  

Step 1: Unpack and Prepare Doors & Hardware

1. Unpack bifold doors and hardware. Lean the doors against the wall next to each other.

2. Open hardware packages and confirm all necessary parts (tracks, pins, screws, etc.) are present. Sometimes a single long track will be provided.

   
   

Step 2: Mark Jambs and Track Placement

1. Using a tri-square, mark your jambs 1 3/8" from the front edge. This mark should run all the way across the header and up a few inches on both the left and right jamb legs.

2. Next, mark the center of your header on the 1 3/8" line. Center your track on this line, ensuring one edge is on the center of the header mark.

Step 3: Install the Track

1. Use pan-head screws to secure the track in place.

2. Repeat this process for any additional tracks if installing multiple sets of bifold doors.

Step 4: Insert Top Pins and Springs

1. Locate the spring-loaded pins and insert them into the top left hole of the left door. Do the same for the top right hole of the right door.

2. Insert the spring-loaded wheel into the remaining hole on top of the doors.

Step 5: Install Bottom Pins

1. Pound the adjustable screw pins into the bottom left hole of the left door and the bottom right hole of the right door.

Step 6: Determine Flooring Type and Prepare the Bottom Brackets

1. For Carpet:

   • If the doors will sit on carpet, cut a 3/8" block to match the size of the L-shaped metal bracket.

   • Place this block at the 1 3/8" mark at the bottom of the jamb legs.

2. For Hard Flooring (Hardwood, Tile, or LVP):

   • No block is needed.

Step 7: Install the Bottom L-Bracket

1. Place the L-bracket centered on the 1 3/8" mark on the floor.

2. Secure the bracket using the provided flat-headed screws.

Step 8: Set the Doors in Place

1. Starting with the left door, insert the top pin into the track first, pushing the door up and then sliding the bottom pin into the L-shaped bracket on the floor.

2. Ensure the door is seated properly, then adjust for height and plumb.

3. Repeat the process for the second door.

Adjust the Doors

1. Adjust the height of the bottom pins as needed to ensure both doors are level and plumb.

2. Loosen the screws on the top corner pin if the door needs to shift left or right for better alignment.

Step 9: Final Adjustments and Trim Installation

1. Check that both doors open and close smoothly, with no rubbing or sticking.

2. Install cove or shoe molding around the doors to cover the gaps between the jambs and the door, as well as to conceal the track on top.

3. Ensure there is a 1/4" gap off the door, and verify that the doors still open without hitting the molding.

Final Quality Check

• Ensure smooth operation: doors should open and close without rubbing or catching.

• Verify reveals are consistent around the doors.

• Check that the doors stay flush when closed, with a uniform gap all around.