Arched doors have become a hallmark of luxury, elegance, and timeless design in residential architecture. Whether you’re upgrading your farmhouse entryway or building a custom home from the ground up, an arched exterior door adds curb appeal and character unlike any standard flat-top option. However, the key to a flawless fit lies in precise measurements—especially when investing in arched double entry doors, round top doors, or decorative upgrades like beveled glass, transoms, or sidelights.
In this guide, we’ll walk you through how to measure for an arch top exterior door, how these differ from standard door installations, and what to expect when customizing your new entry door.
Why Proper Measuring Matters for Arched Doors
Unlike rectangular doors, arched doors feature a rounded top that impacts both height and width dimensions. Whether you’re selecting arched entrance doors or a round top entry door, the curved section must align perfectly with the wall opening to maintain structural integrity and aesthetic symmetry.
Investing in arched entry doors or arched exterior doors means you’re likely choosing a high-end material like mahogany or wood and possibly adding decorative touches like stained glass or double doors. With such customization, there’s little room for error—accurate measurements are non-negotiable.
Tools You’ll Need
- Measuring tape (preferably metal)
- Carpenter’s level
- Straight edge or ruler
- Pencil and paper (or smartphone)
- Ladder (for taller entryways)
Step-by-Step: How to Measure for an Arched Entry Door
1. Measure the Width at the Base
Start by measuring the base width of the existing opening. This is the widest point from one side jamb to the other. This step is especially important for double door arched entry designs, as both panels need precise spacing.
2. Measure the Width at the Spring Line
The “spring line” refers to the point where the curved arched top begins. Measuring this width ensures the curved portion will align smoothly with the straight sides.
3. Determine the Spring Line Height
Measure from the floor (or threshold) to the spring line. This is the vertical section of the frame before the arch begins and is crucial for designing arched double entry doors or doors with transoms.
4. Measure the Total Height at the Apex
Now, find the highest point of the arch and measure from the floor to that point. This gives you the full height for your arch top exterior door.
5. Calculate the Rise of the Arch
Subtract the spring line height from the total center height. The resulting “rise” tells you how tall the arch itself is—important when shopping for round top exterior doors or arched entry doors for sale.
Other Considerations: Design & Style
When ordering your custom arched exterior door, think beyond the measurements. Choose a style that complements your home’s architectural style—whether you’re leaning toward a rustic farmhouse look or a more modern Mediterranean vibe.
Popular features include:
- Beveled glass or stained glass inserts for natural light and privacy
- Sidelights or transoms to frame your entry door arch
- Durable mahogany or wood for warmth, longevity, and timeless beauty
- Options like arched exterior doors or double doors to create a grand entrance
Don’t forget to compare price ranges across materials and finishes. While arched entry doors may cost more upfront than traditional doors, they add long-term value and distinction to your home.
Professional Measurement Is Worth It
Even if you’re comfortable with a tape measure, it’s always wise to have a professional confirm your dimensions—especially when ordering a custom round top door or arched double entry doors. A misstep in measurement could affect not only your installation but your warranty and overall investment.
At The Door Dudes, we specialize in measuring, designing, and installing arched doors that meet both visual and functional needs. Whether you want a modern statement or a traditional arched entrance door, our expert team ensures it fits the first time—beautifully and securely.
Ready to Upgrade Your Entryway?
From arched exterior doors to custom double entry doors with decorative glass, The Door Dudes is your local Colorado expert for precision-built doors. Let us help you select the perfect arch top door that matches your style, fits your space, and enhances your home’s curb appeal.
Contact The Door Dudes today for a consultation or to get a free quote on your custom arched entry door.
FAQ: Measuring and Installing Arched Doors
1. Can I replace a standard door with an arched one?
Yes, but it typically requires reframing the opening. A professional installer can evaluate your home’s structure and help with design adjustments.
2. What’s the difference between a full-radius arch and an elliptical arch?
A full-radius arch forms a perfect half-circle, while an elliptical arch has a flatter, more subtle curve. Each requires slightly different measurements.
3. Can arched doors be customized with glass?
Absolutely. Many arched doors include options for beveled glass, stained glass, or transoms to enhance light and style.
4. What’s the best material for an arched entry door in Colorado?
Mahogany, wood, and fiberglass are excellent choices due to their durability, insulation, and resistance to the elements.
5. Do arched doors come in double-door configurations?
Yes! You can choose arched double entry doors or double door arched entry styles to create a dramatic, inviting entrance.
6. How long does it take to get a custom arched door?
Lead times vary based on materials and design complexity, but most custom orders take 6–10 weeks.