Choosing the right commercial exterior doors is an important part of any construction project. The wrong door can lead to maintenance issues, performance problems, and costly replacements down the road. The right door can improve security, handle daily traffic, and stand up to years of weather exposure.
When comparing commercial metal exterior doors, commercial exterior glass doors, and commercial exterior wood doors, many contractors focus on appearance first. While appearance matters, it's only one piece of the decision.
The location of the opening, the amount of traffic it receives, and the level of exposure to weather often have a bigger impact on long-term performance than the material itself.
In this guide, we'll compare the most common types of exterior commercial doors and explain how to choose the best option for your project.
What Makes a Door an Exterior Door?
Most people think of exterior commercial doors as the main entrance to a building. In reality, an exterior opening isn't always located on an outside wall.
A door becomes an exterior opening whenever it is regularly exposed to outdoor conditions such as rain, wind, humidity, sunlight, temperature changes, or airborne debris.
For example, many warehouses have personnel doors located behind overhead loading dock doors. On paper, those personnel doors may look like interior openings. However, if the overhead door remains open throughout the day, that opening is exposed to the same conditions as the outdoors.
In that situation, the door is functioning as an exterior opening and should be treated like one when selecting the door, frame, and hardware.
The same concept applies to vestibules. Many office buildings, schools, healthcare facilities, and retail stores have two sets of entry doors separated by a small lobby area. The second set of doors may technically be inside the building, but they still experience temperature swings, drafts, moisture, and heavy traffic throughout the day.
When selecting commercial exterior doors, contractors should evaluate how the opening actually functions rather than relying solely on building plans.
Commercial Metal Exterior Doors
For most projects, commercial metal exterior doors are the preferred choice.
Steel doors offer a strong combination of security, performance, impact resistance, and low maintenance requirements. That's why they are commonly used in schools, warehouses, manufacturing facilities, office buildings, healthcare facilities, and government buildings.
Most contractors choose commercial metal exterior doors for:
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Service entrances
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Employee entrances
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Rear exits
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Loading dock openings
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Utility rooms
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Stairwell exits
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High-traffic exterior openings
Commercial metal exterior doors perform well because they can handle constant use while standing up to changing weather conditions.
Other advantages include:
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Strong resistance to daily wear and abuse
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Better protection against forced entry
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Long service life
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Compatibility with fire-rated openings
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Lower maintenance demands compared to other materials
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Wide variety of hardware and frame options
When contractors need a dependable solution for exterior commercial doors, steel is usually the first option they consider.
Commercial Exterior Glass Doors
Commercial exterior glass doors are often selected when visibility and appearance are important.
You'll commonly find commercial exterior glass doors at storefronts, office buildings, hotels, schools, restaurants, and healthcare facilities. These openings create an inviting entrance while allowing natural light to enter the building.
Benefits of commercial exterior glass doors include:
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Increased natural light
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Improved visibility
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Modern appearance
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Better customer experience in retail environments
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Flexible storefront configurations
Many projects use commercial exterior glass doors at the main entrance while relying on commercial metal exterior doors for service entrances, employee entrances, and back-of-house areas.
While glass entrance systems provide an attractive appearance, they often require more attention to hardware and maintenance than steel doors. Contractors should also consider traffic levels, security requirements, and the overall function of the opening before selecting glass.
For customer-facing entrances, commercial exterior glass doors are often the right choice. For utility openings and high-abuse areas, steel is usually the better fit.
Commercial Exterior Wood Doors
Commercial wood doors offer a warm, upscale appearance, but contractors should carefully evaluate where and if they are used for exterior functions.
Many people assume a wood door can be installed anywhere as long as it matches the building design. In reality, wood reacts to moisture, humidity, sunlight, and temperature changes.
Over time, these conditions can affect the door's performance, especially when the opening receives direct exposure to the elements.
For that reason, commercial wood doors generally work best in protected locations such as:
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Covered entrances
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Deep overhangs
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Protected vestibules
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Low-exposure architectural openings
When a door is exposed to rain, snow, direct sunlight, or constant temperature changes, steel is often the more practical choice.
This is especially true for loading docks, service entrances, rear exits, and other openings that experience harsh jobsite conditions.
While commercial wood doors can be a good fit for certain architectural applications, they are rarely the first choice for demanding exterior environments. That's one reason commercial metal exterior doors remain the most common type of exterior commercial doors across commercial construction projects.
Comparing Steel, Glass, and Wood Exterior Commercial Doors
Security
• Commercial metal exterior doors typically provide the highest level of security and resistance to forced entry.
• Commercial exterior glass doors can support strong security systems but often require additional considerations depending on the application.
• Commercial wood doors can provide adequate security in some situations, but they generally do not offer the same level of protection as steel door systems.
Maintenance
• Commercial metal exterior doors generally require the least amount of ongoing maintenance.
• Commercial exterior glass doors require routine cleaning and periodic hardware inspections.
• Commercial wood doors often require the most maintenance because environmental conditions can affect the finish and overall performance of the door.
Weather Exposure
• Commercial metal exterior doors perform well in a wide range of climates and weather conditions.
• Commercial exterior glass doors can perform effectively when specified correctly and installed properly.
• Commercial wood doors require the most careful evaluation when the opening is exposed to moisture, sunlight, or frequent temperature changes.
Best Applications
• Commercial metal exterior doors work well for nearly every type of exterior opening, especially high-traffic and high-use areas.
• Commercial exterior glass doors are commonly used at main entrances where appearance and visibility are priorities.
• Commercial wood doors are typically best suited for protected architectural applications where they are not exposed to the elements.
Which Commercial Exterior Door Is Best?
The best commercial exterior doors depend on the needs of the building, the conditions surrounding the opening, and the goals of the project.
For most commercial applications, commercial metal exterior doors provide the best combination of security, performance, longevity, and low maintenance requirements. That's why steel continues to be the most common choice for exterior commercial doors in schools, warehouses, office buildings, healthcare facilities, and industrial buildings.
Commercial exterior glass doors are an excellent option for customer-facing entrances where visibility and aesthetics play an important role.
Commercial wood doors can deliver a premium appearance, but they should be used carefully and only in openings that provide adequate protection from the elements.
Before selecting any exterior commercial doors, take a close look at how the opening will actually function after the building is occupied. A door that faces constant weather exposure, loading dock traffic, humidity, or temperature swings should be treated as an exterior opening regardless of what the plans originally called for.
Making the right choice upfront can reduce maintenance costs, improve long-term performance, and help the opening provide years of reliable service.
