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DIY Picture Frame Trim on a Frameless Mirror

April 21, 2022

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Major spoiler alert! Because the home gym is just a quick phase one, it’s nearly finished. It’s been painted a couple fresh coats of white flour (bye, bye burnt orange), the ceiling fan is hung, and we’re well on our way to being finished. Promise you’ll get a closer look at that pretty ceiling fan and the rest of the room soon but it’s already feeling dramatically brighter and airy in here. But today we’re talking about how we added picture frame trim to a frameless mirror.

The home gym already had these two, large frameless mirrors on the wall (see the before here) and we didn’t see any reason to get rid of them but we wanted to make them look a little less “builder grade.” Framing them out felt like a nice touch but I wanted to take it even further and add some detailing on the glass! Here’s how we got this custom look on a regular old mirror.

Materials  + Tools

Miter Saw

Brad Nailer

Brad Nails

Silicone to attach inner border

Scraper to remove residue

Outer Border

Inner Border

Make the cuts!

Starting with the outer frame, determine how much you want the trim to overlap the mirror. We decided to measure all 4 sides of the mirror and added about 2″ to each side to get the measurement for our 4 cuts. We wanted the frame to be flush with the wall, but also overlap on the mirror front. Next we mitered all the ends at a 45° angle so that they can join together like a picture frame.

To keep the frame flush with the wall, we had to notch out where it would it could overlap the mirror. Looking at the side profile of the trim, here’s a visual of the two cuts we made to keep it overlapping the mirror. Definitely measure how much you’ll have to cut in based on how much mirror overlap, and how far forward the mirror comes off the wall.

Next, we made our cuts for the smaller trim on the face of the mirror based on how much of a space we wanted between the trim. Our gap is about 2″. Next, you’ll make the same 45° mitered cuts for the joints.

Paint the trim

Because we didn’t want to have to tape off the mirror to paint the trim, we painted all the pieces before install using our favorite paint brush. For this trim we used the same eggshell finish as the walls.

Time for install

Starting with the outer frame, use a brad nailer to nail it into place (careful not to hit the mirror). Easy enough! For the inside piece of trim we used silicone and taped it in place while it dried. There’s going to be a bit of residue that leaks onto the mirror and for that we just scraped it off with a razor blade!

After the trim was in place, we caulked the seams and nail holes, touched up some paint and that’s it!

I can’t wait to show you the rest of this space!

Other Posts About the Home Gym

Introducing the Home Gym Before

Home Gym Mood Board

What do you think?

  1. Kelly says:

    Looks great! Can’t wait until you post links for those mat holders on the wall!

  2. Karyl says:

    We did this a few years ago to fancy up a builder grade bathroom mirror–makes such a difference! Though we initially forgot to paint the underside of the edge pieces and had to take it apart and redo. When placed on the mirror they reflect the (unpainted) underside color due to the reflection. Bit of a pain to undo it after the fact, but makes a big differencein the finished product by having the underside the same color as the exterior.

  3. MJ O’Malley says:

    Love the fan! I would love to know what you think after you’ve lived with it a bit. Mainly, is it quiet (no weird rattles or anything)?. I’m considering it for a bedroom and that’s a definite splurge but oh my gosh is it cute!

  4. Patricia says:

    I did this to my builder grade bathroom mirror. The finishing touch was caulking the frame at the mirror so there was no peek through.
    Cheap, quick and great result.

  5. Wendy says:

    I love how it looks. My little detailed/OCD self would be bugged by the image of the beautiful ceiling fan in the mirror is cut off by the trim. By the way that ceiling fan is really beautiful.

  6. Christina says:

    Wow! It’s coming along so fast! Did you have a particular inspiration for the trim you added on top of the mirror itself? I don’t think I’ve ever seen anything like that.

  7. Erika Rademacher says:

    Hi Julia. I have been reading your blog almost-daily now for the past year or so but never commented until now. The fan for the gym (I have never seen anything like it!) is what put me over the edge into the “I must say something” zone: You have the most exquisite taste! I simply love seeing how your selections come together to make a room. I have taken the time to look back at your prior homes and designs, and it’s fascinating to track the evolution of your personal style. My favorite style of yours, I think, is where you are now. Your finished rooms look lived-in, polished, and intentional — but never stuffy. Anyway I just wanted to tell you how much I admire your creativity and enjoy the content you share. Have a great day!

  8. KVickers says:

    I’d love to see the full layout of that house! So many cool stairways to here and there…..I’m imagining a Hogwart’s situation. And I do love a framed mirror. We did this to some of the large frameless mirrors in our older home. I ended up hiring a company because we aren’t quite jigsaw/mitre saw competent. But it is such an excellent update.

  9. Michelle says:

    Looks beautiful! What saw did you use to make the notches for the mirror? Thanks!

  10. Melissa says:

    Looks great! Though I suggest painting the mirror trim black to go with the upcoming checkered floor. I also think it’ll elevate the mirrors even more above the builder grade feel.

  11. Jeannine520 says:

    Looks great! Can’t wait to see more of that fan. How did you make the notch on the back of the outer molding? I can’t think of a way to do that with a miter saw. The only thing coming to mind do that is with a table mounted router.

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