Choosing the Right Hangar Door System: Sliding vs. Vertical-Lifting

When designing an aircraft hangar, one of the most important decisions you’ll make is selecting the right door system. Whether you’re building a hangar for narrow-body or wide-body aircraft, the door type directly impacts the building’s usability, performance, and long-term efficiency.

At Spantech, we combine deep industry expertise with innovative modular construction to deliver turnkey aviation solutions that meet your operational needs. Here’s a closer look at the two main hangar door systems: sliding (bottom-rolling) and vertical-lifting and how to choose the one that’s right for your project.

Sliding (Bottom-Rolling) Doors

Horizontal movement, high performance

Sliding doors consist of rigid panels that move horizontally along a bottom track and are guided by a top rail. This system, most popular, is used for all types of hangars.

Key advantages:

• Superior insulation: By covering the door sections with insulated panels, sliding doors can offer a better thermal performance compared to other systems. The benefit will be especially interesting for hangars with low door-opening frequence (heavy maintenance or storage).
• Architectural flexibility: Sliding door can be fitted with a variety of finishes, just like any building façade. This is not the case for fold-up systems. Sliding door can thus achieve a superior aesthetics, compelling for legacy hangar projects.
• Structural efficiency: Sliding door systems are usually sitting on a ground rail. As such, loads are distributed through the ground rather than suspended from the roof, which reduces structural demands on the hangar frame and related costs.
• Emergency procedure: Sliding doors are preferred for their ease of opening at all times, as they can usually be opened using an airport tractor tower.

Points to consider:

• Higher initial cost: The self-supporting nature and heavier design of sliding hangar doors can lead to higher costs when compared with other systems.
• Maintenance needs: Bottom tracks must be kept clear of debris, ice, and snow to avoid malfunctions.
• Space requirement: In single-bay hangars, you’ll need a designated stacking area (“door garage”) to house the panels, which can increase hangar costs and plot lease costs.

Vertical-Lifting Doors

Compact, cost-efficient, and easy to install

Vertical-lifting systems, including bifold, hydraulic, or fabric lift doors, open upward and stay suspended above the entrance. These systems are ideal when lateral space is limited or cost efficiency is a top priority.

Key advantages:

• Lower investment: Vertical doors are generally more economical to install than motorized sliding systems.
• Minimal ground maintenance: No floor tracks means fewer disruptions and easier upkeep.
• Space-saving design: Their compact footprint makes them a practical choice for single-bay hangars and constrained sites.

Points to consider:

• Reduced insulation: While insulation is possible, these systems typically offer lower thermal performance compared to rigid sliding panels.
• Structural requirements: Loads are transferred to the top of the structure, which may require reinforced frames.
• Emergency access: Vertical systems often rely on powered operation, so more complex backup mechanisms are needed in case of power failure.

What’s Right for Your Hangar?

Both systems are used successfully in a wide range of hangar types. The best choice depends on factors like site layout, thermal performance requirements, operational constraints, and long-term maintenance strategy.

To help guide your decision, here’s a quick overview of Spantech’s opinion on door systems by aircraft type and number of bays:

This comparison gives you a clearer idea of which system might fit your setup. Still unsure? Our team is happy to walk you through the different options for your specific project.

• - Share this article: