How to Add a DIY Wood Frame to a Bathroom Mirror

by Ashley

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.

Framing A Bathroom Mirror

We’re back with another DIY project from our budget bathroom makeover series! (View the final reveal post here!) Today, I’m showing you how we added some farmhouse charm by installing a rustic wood frame around the existing bathroom mirror.

Goodbye builder grade bathroom mirror, hello character! This home renovation project is relatively easy and cheap, but makes a big difference.

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. To make the budget stretch as far as possible, we chose to do several DIY projects.

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 ensure proper fitment for the bathroom mirror frame, the inside edges of the boards needed to perfectly match the 24″ x 36″ mirror. The top and bottom pieces of the frame needed an inside edge that measured 24″, and the inside edges of the side pieces needed to be 36″.

Next, we used our miter saw to make 45 degree cuts at each of the marks. Making 45 degree cuts on both sides of each board makes results in a perfect 90 degree angle when you join them together.

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

Tip: Alder is a great species 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. The amount of wood needed for this project is minimal, so extra cost is worth it.

Once all of the boards were cut, we mocked them up on the wall to make sure they were going to fit. We held the boards on the wall around the existing mirror. Don’t skip this step! If your cuts are off, even by a little bit, it can cause problems. You’ll want to know now before continuing on to the next steps.

Step 2: Sanding, Staining and Sealing

We used sandpaper to smooth out the rough edges and prepare the boards for stain and sealant. Once the wood was nice and smooth, we applied Minwax Wood Stain in Early American with a foam paint brush.

Once the wood stain had fully dried after about 8 hours, we sealed the boards with two coats of Minwax Polyurethane Clear Satin. The polyurethane sealant needed to dry overnight, then it was time to put them up.

bathroom mirror frame boards before they are installed

Step 3: Glue The Frame To The Wall

The goal for this bathroom mirror frame project was to keep everything as simple and easy as possible. Instead of nailing the boards to the walls, we decided to use construction adhesive to mount the boards to the wall.

Gluing the boards right to the wall eliminates the need to find studs, and saved us from having to fill nail holes on the frame. Plus, our existing mirror was also glued directly to the wall, so this option made the most sense.

Construction adhesive is extremely strong, and the frame will hold securely to sheetrock permanently. This can also be somewhat of a con if you think you might need to remove the frame eventually. Use small trim nails to fasten the frame to the wall if you want to be able to remove the frame with minimal damage to the wall.

applying adhesive to bathroom mirror frame boards

This was the trickiest and least forgiving part of the whole process. 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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7 comments

Rochelle March 7, 2018 - 6:15 am

Simple and stylish! Nice work.

Reply
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!

Reply
UniLED Limited April 24, 2018 - 12:07 am

Great symmetry and excellent work.

Reply
Allison August 7, 2019 - 6:54 am

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

Reply
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!

Reply
Amy August 8, 2019 - 6:47 am

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

Reply
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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