If you’re working on a building project that requires structural integrity and efficient floor construction, composite floor decking might be exactly what you need. At CSM Metal Deck, we supply high-quality composite metal deck products designed to meet a wide range of construction needs. Whether you’re building a multi-story commercial structure or a mezzanine floor, here’s everything you need to know about composite floor decking and why it may be the right fit for your next build.
What is Composite Floor Decking?
Composite metal floor decking features specially engineered embossments that bond with concrete slabs to form a reinforced, high-strength system. This interlocking mechanism, along with the concrete’s compressive strength, creates a composite section that is stronger and more efficient than a concrete slab alone. The steel deck acts as a permanent form and positive reinforcement for the concrete, eliminating the need for temporary wood forms and reducing installation time.
At CSM Metal Deck, we stock a full inventory of composite decking products ready to ship. We also manufacture on demand to meet your project’s exact specifications. Our estimators evaluate your needs and choose between stock and production to provide the best price within your timeline.
Benefits of Composite Metal Deck

Composite metal decking offers several advantages:
- Strength & Durability: The composite action of steel and concrete creates a high-load capacity floor system.
- Fire Resistance: Concrete slabs provide built-in fire resistance, meeting many building code requirements.
- Efficient Installation: Permanent steel formwork reduces the need for shoring and speeds up construction.
- Cost-Effective: By combining form and reinforcement in one product, composite deck systems lower labor and material costs.
Types of Composite Floor Decking
Understanding the different profiles of composite deck is key to choosing the right product for your build. CSM Metal Deck offers three main types, categorized by depth: 1.5″, 2″, and 3″.
1.5″ Composite Metal Deck

This is the shallowest composite deck profile, ideal for shorter spans and outdoor flooring applications.
- Span Range: 5 to 9 feet
- Available Gauges: 22, 20, 18, and 16
- Use Case: Great for projects where minimal slab thickness and tight construction spaces are factors.
2″ Composite Metal Deck

This medium-depth profile is a versatile choice that supports thicker slabs and longer spans than the 1.5″ option.
- Span Range: 6 to 12 feet
- Available Gauges: 22, 20, 18, and 16
- Use Case: Frequently used in mid-rise commercial buildings and mezzanines.
3″ Composite Metal Deck

The deepest and strongest option available, this profile is best suited for applications requiring long spans and heavy loads.
- Span Range: 6 to 15 feet
- Available Gauges: 22, 20, 18, and 16
- Use Case: Ideal for large-scale projects and outdoor flooring needing high load capacity and wide spans.
CSM Composite Decking Solutions
CSM Metal Deck is your trusted source for composite decking products. Our team works with you to determine the best solution for your structural needs, timeline, and budget. From quoting to delivery, we provide support every step of the way.
Whether you need a standard stock size or a custom profile manufactured to spec, we’ll help you select the right composite deck product and finish the job on schedule.
Contact us today to get started on your composite floor deck project and learn why builders across the country rely on CSM Metal Deck for high-quality, reliable solutions.