Upgrading your home’s curb appeal doesn’t have to mean investing in all-new windows. Many homeowners are surprised to learn that adding window grilles to existing windows is not only possible, but also simple. With just a few basic supplies, you can take on this weekend DIY project yourself. At NewPanes.com, we’ve helped countless people transform their windows affordably.
Here’s everything you need to know to get started.
What Are Window Grilles, Anyway?
You might also hear them called window grids, muntins, window grates, divided lite bars, or even false mullions.
No matter what you call them, grilles are the decorative bars that give windows that classic divided-light look — think charming colonial squares, sleek modern lines, or cozy farmhouse vibes.
Traditionally, these were actual dividers between multiple panes of glass. But modern versions (like the ones we make at New Panes) are add-on window grid inserts that sit right on top of your existing glass — no window replacements, no mess, no glass removal.
Can I Add Grilles to My Existing Windows?
Absolutely.
If your windows are plain glass and you’re looking to add character, dimension, or that “architectural detail” that boosts home value and curb appeal — you’re the perfect candidate for DIY window grille inserts.
Whether you have:
- Vinyl windows
- Aluminum windows
- Wood windows
- Double-pane or single-pane glass
You can add grids after installation. And New Panes makes it super easy to do just that.
Why Add Grilles to Existing Windows?
Let’s be real — windows are one of the first things people notice on a house. Grilles instantly give your home a polished, high-end look.
Here are some reasons homeowners love our DIY add-on grilles:
- Instant curb appeal
- Custom look without custom prices
- Budget-friendly alternative to full window replacement
- Easy to install, easy to remove
- Matches virtually any style: farmhouse, colonial, craftsman, modern, or traditional
The New Panes Difference: Custom DIY Grilles That Snap In, Not Glue On
At New Panes, we specialize in custom-fit, snap-in window grilles that work with your existing glass.
Our process is simple:
- You measure your window glass (just the exposed part — not the full frame)
- Purchase the needed parts from: www.newpanes.com
- You snap it in from the inside — no tools, no adhesives (if using the knife blade clips), no damage. Or you can use our special super double stick tape or Velcro.
Unlike some stick-on window grids or expensive internal grille options, our inserts are removable, reusable, and don’t mess with your window warranty.
How Do I Install Window Grilles on My Existing Windows?
Here’s how easy it is to transform your windows with New Panes:
Step 1: Measure Your Glass
We only need the visible glass area of your window. We’ll walk you through this in our step-by-step measuring guide.
Step 2: Choose Your Style
From colonial 6-lite grids to prairie-style layouts, you can make whatever design you want! You can even mix and match — grilles on the front windows only? No problem.
Step 3: Place Your Order
Once you know your measurements and grid pattern, just head to our online shop and order your NewPanes Grids. As always 100% USA made.
Step 4: Snap Them In!
When your package arrives, simply measure and cut the grid to size using just a tape measure and scissors! Pop the grid into place on the inside of your window. That’s it. Done in minutes — not hours.
Style Options Galore
Whether you’re going for modern farmhouse, French country, or a New England colonial look, we’ve got a grid pattern for you.
Some of the most popular options include:
- 6-over-6 colonial
- 2-over-2
- 4-over-4
- Prairie style
- Full-view single grid
- Custom layouts (yes, you can do almost any design!)
We’ve been making these grids since 1975 using the same reliable and high-quality material. For inspiration and a closer look at different designs, check out our guide to window grid styles.
Your Low-Cost Upgrade vs. Buying New Windows
Changing the look of your windows doesn’t have to mean replacing them entirely. In fact, many of our customers have saved between $500-$3,000 per project by choosing New Panes instead.
Whether you’re prepping for resale or just want your house to feel more like home, you don’t need to go all-in on replacements.
What Our Customers Are Saying
“We were quoted $14,000 to replace our windows. New Panes gave us the same look for under $500. Our neighbors can’t even tell the difference.” — Olivia T., Florida
“I love that I can pop them in and out when I clean the windows. Game changer!” — Marcus K., Washington
What About Cleaning and Maintenance?
Our window grilles are completely removable. When it’s time to clean your windows, just take them out, wash the glass, and snap them right back in.
No sticky residue. No permanent changes. No tools.
Ready to Add Grilles to Your Existing Windows?
Stop staring at boring builder-grade windows. Upgrade the look of your home today — without replacing a single window. Head over to www.newpanes.com to browse styles, get measuring tips, and design your custom window grids now.
You’ll love the difference. And so will your neighbors. 😉
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