What Are The Different Types of Raised Floors?

Raised floors are widely used in offices, data centers, control rooms, cleanrooms, and commercial buildings. But many buyers and facility managers ask the same question: What are the different types of raised floors, and which one is best for a specific project?

Choosing the right flooring system affects durability, cable management, airflow, load capacity, and long-term maintenance costs.

In this guide, we will explain the most common types of raised floor, compare their features, and explore which industries use them most.

Quick Answer: What Are the Different Types of Raised Floors?

The main raised floor types include:

1. Steel Cementitious Raised Floor – Durable and widely used in offices and data centers

2. Calcium Sulphate Raised Floor – Strong, environmentally friendly, and excellent for offices

3. Aluminum Raised Floor – Lightweight, corrosion-resistant, and ideal for cleanrooms

4. Woodcore Raised Floor – Cost-effective for commercial office environments

5. Airflow/Perforated Raised Floor Panels – Designed for cooling in data centers

6. Glass Raised Floor Panels – Decorative flooring for modern commercial interiors

The best raised access floor type depends on load requirements, airflow needs, budget, and installation environment.

What Is a Raised Floor?

A raised floor, also known as a raised access floor, is a flooring system installed above the structural slab using adjustable pedestals.

This creates an empty space underneath called a plenum, which is commonly used for:

• Cable management

• HVAC airflow

• Electrical wiring

• Data networking

• Plumbing systems

Unlike traditional flooring, raised floors make maintenance and upgrades much easier because individual panels can be removed and reinstalled.

Comparison Table: Different Types of Raised Floors

Raised Floor Type	Main Material	Best For	Strength	Moisture Resistance	Cost Level
Steel Cementitious	Steel + cement	Offices, data centers	High	Good	Medium
Calcium Sulphate	Calcium core	Offices, commercial buildings	High	Moderate	Medium-High
Aluminum	Die-cast aluminum	Cleanrooms, semiconductor facilities	High	Excellent	High
Woodcore	High-density chipboard	Office spaces	Medium	Moderate	Low-Medium
Perforated/Airflow	Steel or aluminum	Data centers	High	Good	Medium-High
Glass Raised Floor	Laminated glass	Luxury offices, exhibitions	Medium	Excellent	High

This comparison helps simplify the selection process when evaluating raised floor types for different industries.

1. Steel Cementitious Raised Floor

Steel cementitious raised flooring is one of the most common types of raised floor worldwide.

These panels are made from steel sheets filled with cementitious material, creating a highly durable structure.

Advantages

• Excellent load-bearing capacity

• Durable for high foot traffic

• Fire-resistant

• Cost-effective for large projects

• Suitable for anti-static applications

Common Applications

• Office buildings

• Data centers

• Server rooms

• Control centers

• Educational institutions

Steel cement-filled raised floors are often preferred in environments where durability and cost balance are important.

Limitations

• Heavier than aluminum systems

• May not suit ultra-clean environments

2. Calcium Sulphate Raised Floor

Calcium sulphate flooring is becoming increasingly popular in commercial buildings due to its environmental benefits and acoustic performance.

These raised floor panels use a compressed calcium sulphate core, often made from recycled gypsum materials.

Advantages

• High dimensional stability

• Better sound insulation

• Environmentally friendly

• Strong load performance

• Smooth and flat surface finish

Common Applications

• Commercial offices

• Government buildings

• Libraries

• Conference centers

• Corporate headquarters

Limitations

• More sensitive to moisture exposure than aluminum

• Usually more expensive than woodcore systems

Many architects choose calcium sulphate systems because they combine performance with sustainability.

3. Aluminum Raised Floor

Aluminum raised floors are premium flooring systems mainly used in controlled environments.

These panels are made through precision die-casting and provide excellent dimensional accuracy.

Advantages

• Lightweight yet strong

• Corrosion-resistant

• Dust-free surface

• High precision manufacturing

• Excellent airflow compatibility

Common Applications

• Semiconductor facilities

• Cleanrooms

• Pharmaceutical manufacturing

• Laboratories

• Electronics manufacturing

Limitations

• Higher material cost

• Usually unnecessary for standard office projects

If contamination control matters, aluminum systems are often the preferred raised access floor type.

4. Woodcore Raised Floor

Woodcore raised flooring uses high-density particleboard or chipboard as the panel core.

It is a practical option for commercial office spaces where budgets are limited.

Advantages

• Affordable

• Easy installation

• Lightweight structure

• Good acoustic performance

Common Applications

• General office spaces

• Retail buildings

• Temporary commercial facilities

Limitations

• Lower moisture resistance

• Lower load capacity compared to steel systems

• Not suitable for heavy server equipment

Woodcore systems work well in low-traffic commercial environments but are less common in mission-critical facilities.

5. Airflow or Perforated Raised Floor Panels

Perforated raised floor panels are not a separate core material but a specialized panel type designed to improve airflow.

They are widely used in data centers to manage cooling efficiency.

Instead of solid panels, these feature perforations or directional grilles that allow conditioned air to move upward toward server racks.

Advantages

• Improves cooling efficiency

• Reduces overheating risks

• Supports hot aisle/cold aisle systems

• Helps reduce energy costs

Common Applications

• Data centers

• Server rooms

• IT facilities

• Network operation centers

Limitations

• Requires airflow planning

• Not necessary in traditional office environments

For modern data center infrastructure, perforated panels are considered essential.

6. Glass Raised Floor Panels

Glass raised floor systems are decorative and functional solutions often used in modern architecture.

These panels typically feature laminated safety glass installed within a raised flooring system.

Advantages

• Modern aesthetic appeal

• Natural light transmission

• High-end appearance

• Unique design flexibility

Common Applications

• Luxury office spaces

• Showrooms

• Museums

• Retail displays

• Exhibition centers

Limitations

• Higher cost

• Less load-bearing than steel panels

• Requires regular cleaning

Although niche, glass systems represent one of the more visually distinctive raised floor types.

Applications of Raised Floors by Industry

Different industries require different raised access floor types based on performance needs.

Data Centers

Best Types:

• Steel cementitious raised floors

• Perforated airflow panels

Why?

Data centers need strong load-bearing capacity and efficient cooling for servers.

Commercial Offices

Best Types:

• Calcium sulphate raised floor

• Woodcore raised floor

Why?

Office buildings prioritize cable management, flexibility, and cost control.

Cleanrooms

Best Types:

• Aluminum raised floor

Why?

Cleanrooms require contamination control, precision, and corrosion resistance.

Telecommunications Rooms

Best Types:

• Steel raised floor

• Anti-static flooring systems

Why?

Heavy equipment and cable organization are major priorities.

Government and Control Rooms

Best Types:

• Calcium sulphate raised floor

• Steel cementitious floor

Why?

These facilities require durability, accessibility, and long-term reliability.

How to Choose the Right Raised Floor Type

When selecting among the different types of raised floor, consider the following factors:

1. Load Capacity

Heavy equipment such as server racks requires stronger panels like steel or aluminum.

2. Airflow Requirements

Data centers often need perforated panels to improve cooling performance.

3. Moisture Conditions

Humid or controlled environments benefit from corrosion-resistant materials such as aluminum.

4. Budget

Woodcore systems are generally more affordable, while aluminum systems sit at the premium end.

5. Maintenance Needs

Raised floors with removable panels simplify cable upgrades and equipment access.

A careful evaluation of project requirements helps avoid expensive flooring replacements later.

Conclusion

Understanding the different raised floor types is essential before starting any commercial, industrial, or technical project.

The most common types of raised floor include steel cementitious, calcium sulphate, aluminum, woodcore, perforated airflow, and glass panels.

Each system offers unique strengths:

• Steel raised floors for durability and data centers

• Calcium sulphate floors for offices and sustainability

• Aluminum floors for cleanrooms and precision environments

• Woodcore floors for budget-conscious office spaces

• Perforated panels for cooling performance

• Glass floors for premium aesthetics

The best raised access floor type depends on your environment, technical requirements, and long-term maintenance expectations.

FAQ of Raised Floors

What are the main types of raised floors?

The main types of raised floors are steel cementitious, calcium sulphate, aluminum, woodcore, perforated airflow panels, and glass raised floors.

Which raised floor type is best for data centers?

Steel cementitious raised floors with perforated airflow panels are usually the best choice because they support heavy loads and improve cooling efficiency.

What is the difference between raised floor types?

The biggest differences include material composition, load capacity, airflow performance, moisture resistance, and cost.

Are aluminum raised floors better than steel?

Aluminum floors perform better in cleanrooms and corrosion-sensitive environments, while steel floors are more cost-effective for offices and data centers.

Why are perforated raised floor panels used?

Perforated raised floor panels help direct cool air to server equipment, improving cooling efficiency in data centers.