Exploring Different Types of Mezzanines: A Comprehensive Guide for Warehouse Storage Enhancement

A second-level mezzanine view from below illustrates the types of mezzanines for warehouses.

Did you know warehouse owners and managers often underutilise up to 20% of their space? The e-commerce industry’s rapid growth has made it crucial to maximize every square foot. That’s where mezzanines come into play.

By 2024, the e-commerce industry in India is expected to reach an impressive US$ 111 billion and double to US$ 200 billion by 2026. This rapid growth stems from the rise in digital literacy and significant investment in the sector. The swift growth of e-commerce and the need for efficient logistics solutions have resulted in an increased demand for storage and distribution facilities. Mezzanines are crucial in enhancing storage capacity, streamlining order fulfillment processes, and improving overall warehouse efficiency.

In 2022, the global industrial mezzanine market achieved a significant US$ 7.75 Billion. It’s expected to grow to a staggering US$ 10.10 Billion by 2028, marking a compound annual growth rate of 4.35% from 2023 to 2028. This surge is fuelled by the e-commerce industry’s notable expansion, the increasing demand for cost-effective space optimization solutions, and continuous product innovation.

This article aims to clarify the different types of mezzanines and their role in optimizing your warehouse space. We will introduce freestanding, rack-supported, and shelving supported mezzanines. We will also discuss key factors to consider when choosing the ideal mezzanine for your warehouse. Prepare for a detailed guide that will transform your approach to warehouse operations.

Understanding Types of Mezzanines

Deciding on the right type of mezzanine can be challenging. In this blog, Donracks, an experienced mezzanine flooring manufacturer, guides you on the specifics of freestanding mezzanines. This knowledge will be fundamental in making your choice. With this understanding, let’s explore freestanding mezzanines.

Freestanding Mezzanines

Freestanding mezzanines represent a distinct kind of mezzanine floor that you can build independently. These floors aim to exploit unused vertical space, providing extra room both above and below. They efficiently accommodate structural elements like sprinkler pipes, lighting fixtures, electrical conduits, and HVAC ductwork.

These mezzanines offer incredible adaptability, allowing you to customize them to your company’s specific needs. They present a cost-effective method to increase usable floor space in a building, and you can add them even after the installation is finished. In commercial settings, freestanding mezzanines can help extend the selling space or enlarge retail areas.

Freestanding mezzanines can be built from various materials such as steel, concrete, or wood. Each material has unique advantages and is chosen based on your company’s requirements. For instance, steel mezzanines are durable and long-lasting, making them ideal for heavy-duty tasks.

Unlike other mezzanines, freestanding ones do not depend on existing structural elements like shelving or racking for stability. They use structural columns integrated with the deck itself, making them ideal for storage situations where space is limited. The columns are securely bolted to the floor, allowing these structures to bear a significant amount of weight and wear.

In India, these mezzanines are legal and have gained popularity because of their adaptability and cost-effectiveness. However, even though they add to the floor space, they aren’t counted as a separate floor when calculating the maximum floor area.

Understanding the characteristics and benefits of freestanding mezzanines is crucial. Still, it’s equally important to consider the other types of mezzanines to find the one that best fits your specific needs. Are you ready to explore another option?

Rack Supported Mezzanines

Rack-supported mezzanines, also known as catwalks, are a unique type of mezzanine floor. They create extra storage spaces above or between your pallet racks, offering multiple points for loading and unloading pallets within the racking systems simultaneously. These mezzanines cleverly merge additional storage with extra workspace, transforming your warehouse into a dynamic and efficient space.

Rack-supported mezzanines stand out among different types of mezzanines. They are:

  • Elevated platforms or flooring systems that integrate with pallet racking systems.
  • Experts at utilizing vertical space.
  • Able to maximize storage capacity by smartly using the existing pallet racking systems.

Rack-supported mezzanines demonstrate their value in industries like e-commerce and logistics by optimizing storage capacity and enhancing warehouse efficiency. Let’s examine other types of mezzanines that offer unique storage solutions.

Shelving Supported Mezzanines

Shelving-supported mezzanines are a unique type of mezzanine floor that significantly boosts storage areas. They facilitate the simultaneous loading and unloading of pallets within shelving systems. These innovative mezzanines not only integrate storage but also generate additional workspace, turning your warehouse into a dynamic and productive environment.

Think of these mezzanines as elevated platforms or flooring systems that cleverly use existing shelving systems to create extra storage levels. They maximize the use of vertical space, increasing storage capacity and making your warehouse more efficient.

But how do they differ from other mezzanines, like rack-supported mezzanines? Both shelving-supported and rack-supported mezzanines, also known as deck-over shelving, use existing shelving or racks for structural support. However, shelving-supported mezzanines feature a second floor of decking over an entire lower level of shelving or pallet rack. This second level can house racks, shelving, offices, or work areas, giving you flexibility in using your space.

You can configure these modular mezzanines as needed and restructure them when storage requirements change. This adaptability makes them a crucial asset for industries like e-commerce and logistics, where efficient storage and distribution facilities are critical.

In the next section, we will look at the factors to consider when choosing the most suitable mezzanine for your needs.

Factors to Consider When Choosing a Mezzanine

Choosing the right mezzanine requires a careful evaluation of several factors. The available warehouse space, budget, and the load capacity needed for your operations are crucial considerations. Each of these elements has a significant impact on your decision, affecting the functionality and efficiency of your warehouse operations. Let’s examine these factors in more detail.

Warehouse Space

Before we explore the types of mezzanines, it’s vital to know the total square footage of your warehouse, excluding spaces like offices or restrooms. This knowledge of your warehouse space plays a crucial role in choosing the right mezzanine, whether your goal is to increase storage or create more workspaces. A mezzanine system effectively fills the space between your floor and ceiling, giving you more room.

Different mezzanines suit different warehouse spaces. Consider the following:

  • If your warehouse has a lot of pallet racking space, a rack-supported mezzanine could be a cost-effective choice. This mezzanine type uses your existing pallet racking as the platform structure. Make sure your rack system can safely bear the extra weight.
  • For warehouses with more vertical room than floor space, structural multi-level mezzanines could be the solution. These mezzanines double your storage capacity by building upwards, not outwards, maximizing floor space and unused overhead space.
  • If storage is a priority, think about a shelving or rack-supported mezzanine.
  • If you favor more open space, a free-standing mezzanine might suit you better.

After considering your warehouse space and the type of mezzanine that best fits it, it’s time to include another vital aspect in your decision-making process – your budget.


Discussing your budget is crucial when choosing the right mezzanine type for your warehouse. The cost of a mezzanine system can change based on the type of mezzanine, the materials used, and the complexity of the installation.

Here are some considerations for different mezzanine types:

  • Freestanding Mezzanines: These might have a higher cost because of their customizability and independence from existing structures. However, their flexibility and ability to adapt to specific needs could make them a worthwhile investment for some businesses.
  • Rack-Supported Mezzanines: These usually come with a smaller price tag, as they use existing pallet racking for the platform structure. However, it’s vital to verify if the existing rack system can support the additional weight safely.
  • Shelving Supported Mezzanines: By reducing the need for standing columns, these mezzanines could potentially save you money on materials and installation. They’re perfect for creating extra storage or workspaces above or between shelves.

When choosing a mezzanine type, consider not just the initial investment. Think about the potential return on investment, too. This includes the cost of materials and installation and the potential savings from increased storage capacity and improved workflow efficiency.

Building a mezzanine could be a more manageable expense compared to expanding your existing space, especially considering the rising costs of new materials. However, expanding a warehouse’s ground floor using warehouse mezzanine systems can bring its own challenges, like obtaining a building permit to comply with local building codes.

While budget is a significant factor, it’s also essential to consider the load capacity of your chosen mezzanine, a topic we’re about to discuss.

Load Capacity

To choose the right mezzanine for your warehouse operations, you need to understand its load capacity. This refers to the maximum weight your mezzanine platform can safely bear. The necessary capacity can differ whether you use the mezzanine for office space and light storage or heavy manufacturing and storage of large, bulky items.

The International Building Code offers general capacity guidelines, expressed in pounds per square foot (psf). It recommends 60 psf for elevated platforms or offices, 125 psf for storage warehouses with light to light manufacturing, and 250 psf for storage warehouses with heavy to heavy manufacturing. These are general guidelines, and the actual load capacity can change depending on the mezzanine type you select.

Different types of mezzanines offer varying load capacities to cater to specific storage requirements. Your options include:

  • Steel Structural mezzanines
  • Modular mezzanines
  • Shelving-supported mezzanines
  • Rack-supported mezzanines

These designs aim to match the configuration and load capacity of your existing shelving or racking.

A standard warehouse floor slab, six to eight inches thick, can usually bear around 25,000 lbs, typically sufficient for a mezzanine. However, the slab’s capacity isn’t the only consideration. Factors like a high water table or loosely packed soil beneath the slab can affect its capacity, possibly requiring additional support via concrete footings. This could lead to extra costs and delays, so it’s vital to consult with a building architect or engineer about the slab’s ability to bear the additional load.

Structural mezzanine systems draw their support from shelving, enhancing storage capacity. For storing heavier cargo or spanning longer column expanses, these structural mezzanines can incorporate I-beams over a concrete floor. The load on these columns changes according to the mezzanine design capacity and the column layout. In simple terms, perimeter columns bear less load than interior ones.

It’s crucial to understand the load capacity of your chosen mezzanine for safe and efficient warehouse operations.

If you are investing in mezzanines, it is crucial to understand how you will benefit from this significant investment. Our next section explains these benefits in detail.

Benefits of Different Mezzanine Types

Structural Steel Mezzanines provide a long-lasting solution to increase storage space in your warehouse. Modular Mezzanines are a cost-effective method to enhance storage space without significant construction or structural alterations.

Let’s examine the distinct benefits of the three types of mezzanines – freestanding, rack-supported, and shelving-supported:

  • Freestanding mezzanines offer a high level of customization. You can fit these cost-effective structures even after your building is complete, providing flexibility.
  • Rack-supported mezzanines are typically more budget-friendly as they utilize existing pallet racking for the platform structure. They provide integrated storage and additional workspace.
  • Shelving-supported mezzanines reduce the need for standing columns, lowering your expenses on materials and installation. They are perfect for creating extra storage or workspaces above or between shelves, and they can support heavier loads.

Freestanding mezzanines can fit many facility layouts. However, if you require unique configurations or specific loading requirements, other types, such as shelving-supported and rack-supported systems, might be more appropriate. They optimize storage space by providing shelving or racking underneath and additional space on top.

Structural mezzanine systems are designed to keep your business moving quickly and efficiently by creating additional floor space or improving your warehouse layout. Catwalk Mezzanine Systems allows employees to move above the facility floor level to different warehouse parts faster.

A mezzanine warehouse system is a space-saving solution, saving you the cost and trouble of relocation or renovation. Each of these mezzanine products is flexible and can be dismantled and moved from one facility to another.

While these mezzanines can provide numerous benefits, it’s equally important to be aware of any potential drawbacks to make the most informed decision for your warehouse needs.

Potential Drawbacks of Different Mezzanine Types

Despite the many benefits of different mezzanine types, some potential drawbacks deserve attention.

Structural mezzanines, often used to maximize space in industrial settings, can carry a high price tag. The cost of materials such as steel beams and support columns can escalate, especially for large projects. Moreover, the need for posts to uphold the mezzanine floor might intrude into your walking space, possibly demanding a rearrangement of your ground floor workspace.

Beyond these practical issues, administrative obstacles also exist. Increasing your warehouse’s ground floor with different mezzanine types comes with challenges. You will need a building permit to adhere to local building codes, for instance. This requirement might appear insignificant, but it can turn into a significant obstacle if you plan to expand quickly.

While acknowledging these potential drawbacks, it’s important to note that each mezzanine type has unique advantages that can counterbalance these challenges, which we will discuss later. Here are the main drawbacks for quick reference:

  • High material costs for structural mezzanines
  • Possible disruption of ground floor workspace
  • The requirement for building permits

Final Thoughts

Choosing a suitable mezzanine for your warehouse is a critical decision that can enhance your operational effectiveness. You have examined different types of mezzanines – freestanding, rack-supported, and shelving-supported – and the factors to consider in your decision, such as warehouse size, budget limitations, and load-bearing needs. Remember, the perfect mezzanine can maximize your space and increase your productivity. In the words of Henry Ford, “Quality means doing it right when no one is looking.” Therefore, spend time making a well-informed decision, and always seek expert advice from Donracks, the leading industrial racks & shelves manufacturer in India. Here’s to a more efficient, productive warehouse!

Frequently Asked Questions

Which material is best for the mezzanine floor?

The choice of the best material for a mezzanine floor can change based on the project’s unique needs and requirements. Solid flooring and bar grating often become the go-to materials, making up around 90% of mezzanine floors. They are useful in areas with heavy use and for robotic applications. On the other hand, bar grating stands out as a top pick for floors that need to stay open, ensuring the flow of water, air, and light. Solid steel deck and concrete flooring also come into play, especially in damp conditions or where fire resistance is a must. To gain more in-depth information and insights into these mezzanine flooring, we encourage you to read our comprehensive blog on this topic. Happy learning!

How do you choose between a steel mezzanine and an aluminium mezzanine?

Deciding between a steel or aluminium mezzanine involves considering several factors. Steel stands as a strong, durable, and easily moldable option. Alternatively, aluminium, with its strength, lightness, and unique shaping abilities, might suit your needs better. Its resistance to rust and lighter weight than steel could even lead to savings in transportation and handling costs. While both materials offer strength and sturdiness, aluminium tops steel in a strength-to-weight ratio.

What is the load capacity of a steel mezzanine versus an aluminium mezzanine?

The construction and design determine the strength of a mezzanine, whether it’s steel or aluminium. Industrial and storage mezzanines generally hold up to 250-500 pounds per square foot. Steel mezzanines, however, can bear weight from 300 to 1500 kilograms per square meter, with 360 kilograms per square meter being the norm for office use. Light storage recommends a load bearing of 4.8kN per square meter, meaning the floor can sustain a fully spread load of 480 kilograms for each square meter. But remember, these averages can fluctuate based on specific design and construction aspects.

What factors should you consider when choosing a mezzanine type?

When choosing a mezzanine type, consider these factors:

  1. Your usage: The purpose of your mezzanine helps you choose the right type. Some mezzanines excel in storage, others are ideal for workspaces or transportation.
  2. Weight capacity: Consider the maximum weight your mezzanine should support. This factor influences the materials and construction style you need.
  3. Construction materials: The materials in your mezzanine’s construction play a significant role. Industrial-grade steel is a typical choice.
  4. Space availability: Account for the size of your warehouse. Your mezzanine should provide extra storage space without hindering operations below.
  5. Installation and maintenance: The cost and complexity of installing and maintaining your mezzanine can differ.

What are the pros and cons of steel mezzanines?

Steel mezzanines have their own advantages and disadvantages.


  1. Light yet Powerful: Steel mezzanines, despite their light nature, can bear heavy weights.
  2. Long-lasting: The construction involves sturdy materials that show resistance towards corrosion and rust.
  3. Low Maintenance: The application of various treatments can increase their lifespan.


  1. Temperature Sensitive: Over time, fluctuations in temperature might deform steel, leading to safety risks or expensive repairs.
  2. Loud: The sound generated by walking on steel mezzanines might not be ideal for silent environments.
  3. High Cost: The incorporation of top-quality materials makes steel mezzanines quite pricey.

What are the pros and cons of aluminium mezzanines?

Aluminum mezzanines bring both benefits and disadvantages. The positive aspects include their lightness, as aluminium weighs a third of steel, making them an excellent option when it’s vital to minimise weight. They also stand up well against corrosion, as aluminium forms a protective oxide layer when it interacts with the air. One more benefit is the recyclability of aluminium, which can be recycled repeatedly without losing its quality.

However, there are also some downsides to factor in. Aluminum doesn’t match the strength of steel. Welding aluminium poses more of a challenge than other metals. And sometimes, you might find that aluminium costs more than basic steel.

How much weight can a mezzanine support?

Several factors, such as size, construction, and the materials used, decide the weight a mezzanine can hold. A larger mezzanine typically holds more weight. Yet, the building’s structural strength and local building rules also impose certain limits. Industrial and storage mezzanines typically hold between 250 and 500 pounds per square foot. But remember, these figures are just averages. The actual load capacity might vary, influenced by the specific design and construction elements.

What building codes do I need to comply with for mezzanine installation?

When you arrange a mezzanine, adhering to the International Building Code (IBC) and OSHA regulations is crucial. The IBC defines a mezzanine as a level positioned between the floor and ceiling of any story. They mandate a minimum of 7 feet of clear space both above and below the mezzanine. Moreover, the mezzanine’s size should not exceed one-third of the room’s floor area. OSHA regulations also demand strict compliance, especially in areas concerning fall protection. Remember to always verify local rules, as they can differ significantly across cities, counties, and states.

How do I determine the right mezzanine size and configuration for my facility?

Determining the correct size and design for your facility’s mezzanine involves several steps:

  1. Understand Your Needs: Grasp the mezzanine’s function in your facility. It might be a storage area, a workspace, or a transportation route.
  2. Organize the Spaces: Set out the spaces you need on the mezzanine and calculate the total dimensions.
  3. Factor in Stairs: Don’t overlook the stairs needed on the mezzanine’s exterior.
  4. Technical Specifications: Be familiar with your mezzanine floor’s technical aspects, which will vary based on its intended use.

Remember, each facility is unique, so tailor your mezzanine design to suit your particular needs.

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