DIY Barn Door Guide

DIY Barn Door Guide: How to Secure a Steel-Framed Door Without a Traditional T-Track

A while ago, I built a barn door with a steel frame that encased the wood for a client in Denver, Colorado. It turned out great, but one question kept coming up: How did I keep the bottom of the door from swinging around? Most barn door hardware kits include a T-track that gets screwed into the floor, with a slot routed into the bottom of the door for guidance. But since my door had a steel base, routing a groove wasn’t an option.

So, I came up with a custom solution—here’s how I did it.

Materials & Tools Needed

• Angle iron (two short pieces, ~1.5” long)

• Scrap plywood (as a spacer)

• Welder

• Grinder

• Clamps

• Spray adhesive

• Felt pads

• Black paint

• Screws

Step-by-Step Process 1. Cut and Prep the Angle Iron

I started by cutting two short lengths of angle iron, each about 1.5 inches long. Then, I modified one piece by cutting off the “L” (one of the flanges), leaving a flat strip.

2. Create a Spacer for Proper Fit

Since the door’s steel frame added thickness, I needed to ensure the guide would fit snugly. I cut a piece of scrap plywood 3/16” wider than the door’s thickness to use as a spacer.

3. Grind and Fit the Pieces

I ground down the two angle iron pieces until they just barely touched when placed around the spacer. This ensured a tight fit around the door’s base without restricting movement.

4. Weld and Smooth the Guide

After clamping the pieces in place, I welded them together. Once cooled, I used a grinder to round the edges and smooth out any rough spots for a clean finish.

5. Add Felt for Smooth Operation

To prevent metal-on-metal grinding, I spray-adhered felt pads to the inside of the guide. This made the door slide smoothly while reducing wear.

6. Paint and Install

Finally, I painted the guide black to match the hardware. Once dry, I screwed it into the floor, aligning it so the door would glide effortlessly without wobbling.

The Result? A Stable, Silent Slide

This custom guide keeps the door perfectly aligned without needing a routed track. It’s durable, easy to install, and works seamlessly with steel-framed doors.