How to Add a DIY Wood Frame to a Bathroom Mirror

by Ashley

Framing An Existing Mirror

This tutorial will show you how to make a bathroom mirror frame with wood that looks amazing.  It’s an easy DIY project that can make a big difference in a bathroom! This wood bathroom mirror frame project can be accomplished in a weekend.

We’re back with another DIY as we get close to finishing up our Budget Bathroom Makeover! (View the full reveal post here!) Today I’m showing you how we added some farmhouse charm by DIYing a rustic wood bathroom mirror frame around the existing mirror.

Goodbye builder grade, hello character!

custom wood bathroom mirror frame

Like I mentioned in the beadboard wallpaper post, the goal for this bathroom makeover was to spend as little as possible. Instead of replacing the existing mirror with something new (mirrors can get a little pricey!), we grabbed a couple of boards and added a bathroom mirror frame to give it an updated look – DIY style! Super simple and affordable. Check, check!

Here’s how we did it!

How To Add A Bathroom Mirror Frame

(Affiliate links are provided below for convenience. For more information see my disclosure, here.)

Supplies Used:

Step 1: Measure and Cut the boards

To get the right dimensions for the bathroom mirror frame, the inside edges of the boards needed to perfectly match the 24″ x 36″ mirror. So that means that the top and bottom pieces for our frame had an inside edge that measured 24″. The inside edges of the side pieces were 36″. We then used our miter saw to make 45 degree cuts at each of those measured marks. That way the boards would form a 90 degree angle at each of the corners when paired with another board.

cutting a board with a miter saw at a 45 degree angle

Tip: Alder is a great choice of wood for this project – although it’s slightly more expensive than cheap pine boards, it tends to warp less and the wood is more uniform. Since the amount of wood needed is minimal, the extra cost doesn’t amount to very much.

Once all of the boards were cut, we did a trial run and placed each one around the existing mirror to make sure they fit perfectly. Don’t skip this part!

Step 2: Stain and Finish

Next, we stained the boards with Minwax Wood Stain in Early American using a foam paint brush. After 8 hours, we sealed the wood pieces with two coats of Minwax Polyurethane in Clear Satin.

bathroom mirror frame boards before they are installed

After the stain and sealant dried overnight, it was time to put them up!

Step 3: Glue the boards to the wall

The goal for this bathroom mirror frame project was to keep everything simple and easy.  We decided to use construction adhesive to mount the boards to the wall. The more traditional method would be to use trim nails. But gluing the boards right to the wall eliminated the need to find studs, and saved us from filling nail holes! Plus, the existing mirror was also glued directly to the wall so this option made the most sense.

applying adhesive to bathroom mirror frame boards

This was the trickiest and least forgiving part. We needed to use enough adhesive to keep the boards held securely in place, but not so much that it would ooze out the sides and make a mess all over our newly wallpapered walls. We put small dollops along the back of each board and placed them on the wall, one at a time.

installing wood trim around a bathroom mirror

You can see in the photo above that the old trim piece from the vanity had been installed with construction adhesive as well. I wanted to point that out to show what it looks when you remove boards that are glued to the wall. Not too destructive and the glue spots can easily be sanded down and painted if you decide to switch things up down the road! 

adding a diy wood frame to a bathroom mirror

We also placed a small bead of adhesive along the edges where the boards came together…

gluing a wood frame to an existing mirror

installing a frame around a bathroom mirror

The glue between the boards helped hold them together and made a finished looking seam. As we pushed the boards together, some of the glue oozed out but we were able to easily wipe it clean with a wet rag.

Once all of the boards were exactly where they needed to be, we held them in place for about 5 minutes allowing the adhesive to dry.

installing wood boards onto the wall around a bathroom mirror

After 5 minutes was up, the hard part was over and our our bathroom mirror frame upgrade was complete!

Related: How to Update Your Builder Grade Light Fixture For FREE!

finished bathroom mirror frame

Checkout the tutorial on that cute mason jar light fixture here! Besides the Edison light bulbs, the entire thing cost me $0! Yup, FREE.99! Checkout the full reveal of this farmhouse bathroom makeover on a budget here!

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Rochelle March 7, 2018 - 6:15 am

Simple and stylish! Nice work.

Mama C March 7, 2018 - 9:04 am

Wow!!!!!! Very well done! I need to do that in my bathroom around my “naked” mirror…adding a frame really gives your a tidy and classy rustic look!

UniLED Limited April 24, 2018 - 12:07 am

Great symmetry and excellent work.

Allison August 7, 2019 - 6:54 am

What did you do with the little clear screw things that attach the mirror to the wall?

Ashley August 8, 2019 - 10:02 am

Our mirror was glued to the wall with construction adhesive, so we did not have to deal with the clear screw things. However if we did have those, we would probably just remove them and glue the mirror to the wall using the same adhesive that we glued the wood pieces with. Hope that helps!

Amy August 8, 2019 - 6:47 am

That’s beautiful! How did you work around the the existing hangers for the mirror?

Ashley August 8, 2019 - 10:02 am

Thank you Amy! Our mirror was glued to the wall with construction adhesive, so we did not have to deal with the existing hangers that a lot of builder grade mirrors come with. However if we did have those, we would probably just remove them and glue the mirror to the wall using the same adhesive that we glued the wood pieces with. Hope that helps!


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