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DIY Bi-Fold Door Makeover

bi fold door

For some reason (unless you buy the standard 3-panel hollow-core door) an 18 inch door is quite expensive, IMO!  So taking on a DIY bi-fold door makeover was the only option for my mudroom closet!

I decided to update my drab bi-fold closet door by turning it into bi-parting doors, covering it with hardboard, adding a modern trim detail.  Which is much easier process than you my expect!


  • 4 ft. x 8 ft. Hard Board Panel
  • Two 1/4 in. x 1 1/12 inch PVC Lattice Moulding (8 ft.)  
  • Liquid Nails
  • Spackling Paste
  • Primer
  • Paint
  • Pulls or Knobs
  • Four 3 in. Non-Mortise Hinges


  • Circular Saw (with guide)
  • Miter Saw
  • Nail Gun
  • Clamps
  • Painting Supplies (paint brush, roller, paint pan)
  • 220-grit Sand Paper

This is the first of several projects for my Spring 2024 One Room Challenge!  I am tackling my small mudroom, which right now is very blah (IMO!).  My theme for the space is Vintage Bug Science Poster.  Can you picture it!?

Be sure to check out the other participant posts and follow along as we move on to the next project for this challenge! 

Step One: Remove Bi-Fold Door Hardware

I started by removing the bi-fold doors from the door track and then removing the bi-fold door hardware and track hardware.  

Unscrew the hardware holding the two panels together.  Then pull the track pins from the top and the bottom of the doors.  The track pins are just pushed into a hole in the door and should be easily removed. 

Unscrew the track from the top of the door frame and then unscrew the pin holder from the bottom of the door frame/floor. 

Step Two: Cover with Hardboard

Start by first measuring each panel and writing down the measurements.  It is not uncommon that each panel is slightly different, so be sure to measure both panels!  

I used the Kreg Rip-Cut guide attached to my circular saw to cut down the hardboard.  I first cut down the width of the door and then cut the panel to the correct height. 


Once you have the panels cut down then cover your door panels with liquid nails, the line the hardboard panel up with the edges and clamp.  I found there was no such thing as too many clamps!  I lined the edges and all corners with as many clamps as I could. 

Step Three: Fill the Seam

Next, I used spackling paste to fill the seam between the door and the hardboard panel.  By filling the seam you cover any gaps and ensure the attach hardboard doesn’t look “attached”. 

Once the spackling dries use a fine sanding block to smooth the edge. 

Step Four: Add Trim Detail

There are so many option for adding trim elements to your door panels!  I opted for a simple modern detail across the two door panels. I used 1 1/2 in. PVC lattice moulding.

Using a miter saw cut the corners at a 45 degree angle.  The vertical trim piece is 3 inches in from the edge and the horizontal trim pieces at 1 1/2 inch from the door edge. 

To attach the trim, I used liquid nails, clamps, and a few nails to hold everything in place while it dried. 

I then used some spackle to fill the nail holes and ran a bead of caulk where the trim met the door.

Step Five: Prime the Door

Using a primer will ensure a full coverage and create a smooth base for your paint.  I used Kilz all purpose primer and applied two coats to fully cover the brown color of the hardboard and the filling on the edges of the door. 

Step Six: Paint

To paint my door I used a high quality foam roller.  I started by painting the back of the door, applying two coats. Then painting the front and sides of the door, also applying two coats. 

Step Seven: Add Hinges

Attach the hinges first to the door frame.  The top hinge is typically set 7 inches from the top of the door frame and the bottom hinges is set 11 inches from the floor/bottom of door frame.

Once the hinges are attached to the frame then use wedges or an extra set of hands to hold the door at the correct height.  

Step Eight: Add Door Catch

Add a magnetic door catch to the top of the doors and the door frame.  This will help to hold the swing doors closed. 

Links to Create a Faux Wood Finish

DIY Bi-Fold Door Makeover

Prep Time 2 hours
Build Time 6 hours
Dry Time 8 hours


  • Circular Saw with Guide (recommended)
  • Miter Saw or miter box
  • Nail Gun
  • Clamps lots of them!
  • Paint Supplies roller, roller pan, paint brush


  • 1 4 ft. x 8 ft. Hardboard Panel
  • 2 8 ft. Trim boards amount will depend on your desired trim design.
  • 2 Liquid Nails
  • Kilz All Purpose Primer
  • Paint any color!
  • 2 Pulls/Knobs
  • 4 Hinges
  • 2 Magnetic Door Catch


  • Remove bi-fold door hardware.
  • Cover with hardboard.
  • File seam between hardboard & door.
  • Add trim detail.
  • Prime the door.
  • Paint the door.
  • Add hinges. (first to door frame, then to the door)
  • Add door catch.

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