The Best Entryway Upgrade You Haven’t Considered Yet
A 3/4 glass front door with sidelites is one of the smartest entryway choices a Chicago homeowner can make — and it’s easier to understand than it sounds.
Here’s a quick summary of what it is and why homeowners choose it:
- What it is: A front door where glass covers the top three-quarters of the door panel, flanked by narrow windows (sidelites) on one or both sides
- Why homeowners choose it: More natural light than a solid door, more privacy and security than a full-glass door
- Most common configuration: A 36″ x 80″ door with two 12″ sidelites on either side
- Material options: Steel, fiberglass, or wood — each with different durability and energy efficiency trade-offs
- Key feature to look for: Low-E insulated glass and polyurethane-filled panels, especially important in Chicago’s cold winters
It’s the partial glass door that gives you the best of both worlds — a bright, welcoming foyer without sacrificing the strength and insulation your home needs.
I’m Steve Mlynek, CEO and founder of HomeBuild Windows, Doors & Siding, and over 20 years of installing 3/4 glass front doors with sidelites across Chicago and the northwest suburbs has shown me exactly what separates a great entryway from a frustrating one. In this guide, I’ll walk you through every option so you can make a confident, informed decision.
3 4 glass front door with sidelites terminology:
Benefits of a 3 4 Glass Front Door with Sidelites
When you are redesigning your home’s front entrance, you often find yourself at a crossroads. Do you choose a solid door for maximum privacy and insulation, or do you opt for a full-glass door to flood your dark foyer with beautiful sunshine?
The 3/4 glass front door with sidelites is the ultimate entryway compromise. It strikes a flawless balance, giving you the natural light of a grand, open foyer while maintaining the structural security and thermal barrier your home requires.
Banish the Dark Foyer
Many homes in Chicago and the surrounding northwest suburbs suffer from dark, claustrophobic entryways. By combining a 3/4 lite door with matching sidelites, you create a massive wall of daylight. This layout allows natural light to pour in from multiple angles, instantly making your foyer feel larger, warmer, and more welcoming.
The Perfect Balance of Privacy and Light
A full-glass door can sometimes make you feel like you are living in a display case. With a 3/4 glass door, the bottom quarter of the door remains solid. This solid bottom section blocks the view of your interior flooring, keeps packages hidden from the street, and provides a psychological sense of security.
To learn more about how to design these systems, check out The Complete Guide to Front Doors with Sidelights and explore our tips on Sidelight Delight: Choosing the Perfect Custom Entry Doors.
Material and Energy Efficiency Options for 3/4 Lite Doors
Choosing the right material for your 3/4 glass front door with sidelites is critical, especially when dealing with the extreme weather shifts of the Midwest. From freezing winters in Elgin to humid summers in Schaumburg, your door must perform flawlessly year-round.
We work with industry-leading brands like Pella, Therma-Tru, and Simpson to ensure your entry system is built to last. Below is a quick comparison of the primary materials available:
| Feature | Fiberglass | Steel | Wood |
|---|---|---|---|
| Durability | Exceptionally high; won’t dent, rust, or warp | High strength; can dent under heavy impact | Moderate; requires regular painting/staining |
| Maintenance | Virtually zero maintenance | Low maintenance | High maintenance (susceptible to rot and warping) |
| Insulation | Excellent (polyurethane core) | High (polyurethane core) | Moderate (natural wood properties) |
| Real-World Benefit | Best overall for Chicago’s extreme climate | Outstanding security and crisp, modern lines | Classic, authentic architectural beauty |
Choosing Fiberglass for Your 3 4 glass front door with sidelites
Fiberglass is arguably the best material for homeowners in our service areas, such as Arlington Heights and Barrington. Premium fiberglass doors mimic the authentic look of real wood grain without any of the structural weaknesses.
- Rot and Moisture Resistance: Unlike wood, smooth fiberglass will never absorb moisture, rot, or split. When paired with a composite frame and PVC casing, fiberglass entry systems create an impenetrable barrier against wind-driven rain and melting snow.
- Thermal Efficiency: Premium fiberglass doors are packed with dense polyurethane foam insulation. This ensures your home stays cozy during freezing winter nights.
- Sidelite Matching: You can easily pair your main door with a matching prehung smooth fiberglass sidelite unit to ensure a perfectly cohesive look across your entire entryway.
Steel Options for a 3 4 glass front door with sidelites
If security and clean, modern lines are your top priorities, a steel entry door is an excellent choice.
- Unmatched Strength: Steel offers a rigid, secure barrier that gives homeowners peace of mind.
- Dual-Color Pre-Finishing: Many modern steel doors feature dual-color options—such as a bold black exterior to boost curb appeal and a clean white interior to match your foyer decor.
- Portrait Glass Styles: Pairing a steel door with 3/4 portrait glass and dual sidelites creates a striking, contemporary look that fits beautifully in modern homes throughout Naperville and the North-West Suburbs.
Sizing, Configurations, and Handing
Before ordering a new entry system, understanding standard dimensions and configurations is essential to avoid installation delays.
Standard Sizing
The most common configuration for a single entry door with sidelites features a 3’0″ x 6’8″ (36″ x 80″) door slab flanked by two 12-inch or 14-inch sidelites.
When planning your rough opening, keep in mind that the actual unit size of a prehung door with sidelites is wider than the nominal measurements. For example, a nominal 12″ sidelite unit typically has an actual width of 13.5″ and requires a rough opening of 14″ to 14.5″ to allow for proper plumbing and shimming during installation.
Door Handing (Left-Hand vs. Right-Hand)
Determining the “handing” of your door is simple but crucial:
- Stand on the outside of your home, facing the front door.
- Note which side the hinges are on.
- If the hinges are on the left, it is a Left-Hand door.
- If the hinges are on the right, it is a Right-Hand door.
For more inspiration on grand entrance layouts, including wider double-door options, take a look at our guide on Double Door with Sidelites and French Door Inspiration.
Professional Installation: Why Prehung Units Beat DIY Retrofitting
While a DIY approach might seem tempting, retrofitting glass kits or trying to piece together separate door slabs and sidelites often leads to structural issues and drafty entryways.
Why Prehung is King
A prehung entry system means the door slab and sidelites come pre-mounted inside a single, unified frame. This ensures that:
- The weatherstripping compresses evenly around the entire perimeter.
- The hinges, locksets, and strike plates align perfectly.
- There are no hidden air leaks between the sidelites and the door frame.
If you are looking to refresh an existing sidelite frame without replacing the entire system, a specialized clear simulated 3-lite glass and frame kit can be used. However, for a complete upgrade, a full prehung unit installed by professionals is always recommended.
Our owner-supervised installations ensure that your door frame is perfectly square, level, and plumb. This prevents the structural warping that often plagues DIY projects in older homes. For a deeper dive into the installation process, read our expert article on How to Replace a Front Door and Sidelights.
Frequently Asked Questions About 3/4 Lite Entryways
How do you measure for a new 3/4 glass front door with sidelites?
To get an accurate measurement, you must measure the “rough opening” rather than just the active door slab. Remove the interior trim to expose the raw wall studs. Measure the width from stud to stud in three places (top, middle, bottom) and the height from the subfloor to the header stud. Always use the smallest measurement to ensure your new prehung unit will fit.
Why is a prehung unit preferred over replacing just the door slab?
Replacing just the door slab (called a “slab-only” installation) is incredibly difficult because older frames have shifted over time. A prehung unit includes a brand-new frame, sill, and weatherstripping designed to seal out Chicago’s harsh winter drafts.
Where can you find custom or special-size options for 3/4 lite doors with sidelites?
Older or historic homes in places like Barrington and Evanston often have non-standard rough openings. At HomeBuild Windows, Doors & Siding, we specialize in sourcing and installing custom-sized entry systems tailored to your home’s unique architectural needs. When planning your layout, it is helpful to understand what does a new front door and side panel actually involve structurally before starting.
Conclusion
Upgrading to a 3/4 glass front door with sidelites is one of the best investments you can make to improve your home’s curb appeal, interior lighting, and energy efficiency.
At HomeBuild Windows, Doors & Siding, we bring over 20 years of local expertise to every single project. As an Elite Platinum Pella® Certified Contractor and Andersen Certified Contractor, we are committed to delivering top-tier workmanship. Our owner-supervised installations, backed by our Angi Super Service Awards and Nextdoor Neighborhood Fave recognition, ensure that your entryway replacement is seamless, professional, and built to withstand the worst of Midwest weather.
Ready to transform your home’s facade? Upgrade your entryway with HomeBuild entry doors today and request a professional consultation with our local experts.
