DIY Window Mullions

6 Materials
2 Hours

My goal for the exterior of our home was for it to look like a sweet, cozy cottage. Buying new windows just isn’t in the budget, so I decided to recreate a look that I love with the windows we already have.

diy window mullions

Here’s a shot of the windows before we started the project.

diy window mullions

Before we really even started I decided to use some 1/2” masking tape to mark the lines and give us a better idea of weather or not this was something we really wanted to do.

diy window mullions

After a day or two of having the tape up I decided it was go time.

I purchased 4- .75”x.25”x7’ window/door trim pieces from lowes and painted them the same color as our window frame.

The back side that is up against the glass I painted black to match the inside of the window.

(This window is very old.. it was silver metal and because replacing it isn’t an option yet I opted for painting it which is why it’s two different colors.)

diy window mullions

We cut the wood to size and measured each section individually to make sure it fit just right.

To attach it to the window we used e6000 glue and painters tape to hold the wood in place while the glue hardened.

diy window mullions

After about 6 hours, I removed the tape and used a straight edge razor to remove any excess glue that seeped out of the edges.

diy window mullions

All in all I am thrilled with the results. If buying new windows isn’t an option but you like this look, I highly recommend trying this! It’s added just the right cottage charm to our home and it makes a great backdrop for pretty flowers.

diy window mullions

diy window mullions

Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
Hometalk may collect a small share of sales from the links on this page. More info

Top Hometalk Projects

No Way! These Pops of Color Were Made With Dollar Store Items!
15 Pieces Of Furniture That DIYers Built From Scratch
11 Unexpected Ways to Use Spices in Your Home
The Easiest Ways to Grow a Bumper Crop of Tomatoes
16 Creative Ways To Upcycle Pallets
11 Unexpected Ways to Use Spices in Your Home
31 Amazing Furniture Flips You Have to See to Believe
29 Of The Best DIY Mirror Projects Ever Made
The Easiest Ways to Grow a Bumper Crop of Tomatoes
22 Ideas To Make Your Terra Cotta Pots Look Oh-So-Pretty
15 Kitchen Updates Under $20
Turn Your Old Junk Into The Perfect Home For Your Plants
31 Space-Saving DIY Ideas That'll Keep Your Home Organized
30 Fun Ways To Keep Your Home Organized
20 Easy Concrete Projects You Absolutely CAN Do!

Have a question about this project?

3 of 6 questions
  • Robyn Garner
    on Aug 12, 2019

    Mullions are ordinarily on the inside of the window. Was there a reason you chose to put them on outdoors? How have they held up to the weather? Looks beautiful!

  • C Crow
    on Aug 12, 2019

    Looks beautiful! Would love to do it but I need to figure out a way to remove for washing. Any ideas?

  • V
    on Aug 27, 2019

    How do the windows look from the inside? Does the glue show against the black paint on the mullions from the inside? If you want them off, is that glue hard to get off?

    It looks great from the outside!

    • Nikki | thebuckbungalow
      on Aug 28, 2019

      In my opinion they look great from the inside! Unless you really look closely, you don’t see the glue. As far as taking them off, it could probably be done with a razor between the wood and the window. I’m not positive, so don’t quote me on that haha.

      we plan to replace the windows eventually, so I wasn’t worried about having to take them off. Hope that helps 😊

Join the conversation

2 of 79 comments
  • Alma
    on Aug 31, 2019

    I think it’s beautiful but the flowers are prettier!

  • Lisa
    7 days ago

    Looks great. Just wondering the color of paint/brand on your front door.

Your comment...