How to fix Barn doors?

You can try readjusting the sliding hardware at the top ie... let the outside corners drop

You could buy a flat piece of decorative molding. Glue it on one door so half is glued and half will cover the gap when the doors are closed. Stain the wood the same color as the doors.

See if you can adjust from the top and lower the outside edges. Good luck on your getting them to close.

I tried adjusting the hardware on top already. I think the problem is that the boards are not straight?

Wood tends to act up depending on the weather. It shrinks and expands. Also the weight of the boards and the whole door should be taken into consideration. Maybe applying a filler to the gap and staining it to match the boards? (You did a good job)

I measured - they’re square.

i did adjust the hardware some more and added wood filler in between the boards.

this is the best I can do for now.

thanks for all the help!

You actually did quite a good job of making these barn doors with the diagonal supports to help prevent sagging. As the top portion of the two doors is touching, it is really only the bottom part that has a gap. Sand down with a planer the inside sections of the top part of the two doors where they are touching, until the entire length touches, eliminating the gap.