Your Composite Deck Vendor and Retailer for Structural Steel Floor Deck
When builders, fabricators, and general contractors search for a composite deck vendor and retailer, they’re rarely looking for backyard patio boards. They need structural composite steel floor deck. The kind that gets poured with concrete to build elevated floors in real buildings. That distinction matters, and it’s the first thing we want to clear up at Keystar Industries.
We’re a locally owned and operated metal decking supplier at 1920 Shawnee Road in Eagan, MN. We stock, cut, and ship quality composite steel floor deck made right here in the USA. If you’ve been hunting for a reliable composite floor deck source that actually keeps inventory on hand and answers the phone, you’re in the right place.
What “Composite Deck” Actually Means in Construction
Let’s be precise, because the word “composite” gets thrown around a lot. In commercial and structural construction, composite steel deck is corrugated steel sheet with raised embossments stamped into its ribs. You lay it across steel joists or beams, then pour concrete over the top.
Here’s the part that makes it “composite.” Those embossments mechanically lock into the cured concrete. The steel and the concrete then act as one structural unit. The deck isn’t just a surface to pour on. It becomes the positive reinforcement for the slab, carrying tension at the bottom of the floor system.
This is completely different from wood-plastic composite decking you’d buy for a deck off the back of a house. We don’t sell that. We sell composite floor deck for buildings: multi-story commercial structures, mezzanines, parking garages, and elevated floors that have to carry real loads.
Why the Composite Bond Saves You Money
Because the composite steel deck does double duty as form and reinforcement, you get tangible benefits on the job site. It’s not just a spec sheet talking point.
- Thinner slabs. The deck shares the structural load, so you often pour less concrete.
- No temporary shoring. Composite deck spans on its own during the pour, which cuts labor and rental costs.
- Higher load capacity. The bonded system carries more than concrete or steel would alone.
- Faster framing. Crews work on a solid platform immediately, with no waiting on cure cycles to move ahead.
These are the reasons engineers spec composite deck for floors instead of pouring a conventional reinforced slab. The Steel Deck Institute publishes the design standards that govern these systems, and the American Iron and Steel Institute backs the material science behind cold-formed steel.
Composite Deck vs. Form Deck: Know What You’re Ordering
This trips up a lot of buyers, so it’s worth a clear answer. Composite deck and form deck look similar on a pallet, but they do different jobs.
Composite deck has those embossments and bonds structurally with the concrete. Form deck is a permanent stay-in-place form. It holds the wet concrete in place while it cures, but it does not act as structural reinforcement. The rebar inside the slab does that job instead.
If you order the wrong one, you either overpay for capacity you can’t use or, worse, under-build a floor that was supposed to be composite. We help customers sort this out every week. If you want the full breakdown, our composite vs. form deck guide walks through every difference.
| Feature | Composite Deck | Form Deck |
| Structural role | Acts as reinforcement (bonds with concrete) | Permanent form only |
| Embossments | Yes, for mechanical bond | Minimal or none |
| Reinforcement source | The deck itself | Separate rebar |
| Typical use | Elevated structural floors | Slabs where deck isn’t load-bearing |
| Slab efficiency | Thinner slabs, less concrete | Standard slab design |
You can browse both product lines directly: composite deck options and form deck.
Composite Deck Depths, Gauges, and Finishes We Stock
A good composite deck supplier doesn’t make you guess. Here’s what we carry and how it’s typically used. Getting depth, gauge, and finish right the first time is the difference between a smooth pour and a costly callback.
Composite Deck Depths
We stock the three standard depths and cut them to your order:
| Depth | Common Application |
| 1.5″ | Shorter spans, lighter floor loads, mezzanines |
| 2.0″ | Mid-range spans, common in multi-story commercial floors |
| 3.0″ | Longer spans, heavier loads, parking and industrial decks |
Deeper deck spans farther and carries more, which can reduce the number of supporting beams. The right depth depends on your span and load, and our team helps match it to your engineer’s drawings.
Gauges and Finishes
Beyond depth, the right metal floor deck spec comes down to thickness and corrosion protection.
- Gauges: 22, 20, 18, and 16. Lower number means thicker, stronger steel.
- Galvanized finishes: G60 or G90 zinc coating per ASTM A653, for moisture and corrosion resistance.
- Painted finish: available where galvanizing isn’t required.
If you’re not sure whether your job needs G60 or G90, ask us. We’ve shipped enough deck across Minnesota and beyond to know what holds up in real conditions. ASTM International maintains the material specifications we build to.
What Makes a Composite Deck Vendor and Retailer Worth Buying From
Anyone can list deck on a website. The difference shows up after you place the order. Over the years, we’ve learned exactly what contractors and fabricators actually care about, and we built our business around it.
Real Inventory, Not Just a Catalog
We keep composite steel deck on the floor in Eagan. When you call, we can usually tell you what’s in stock right now. That matters when your framing crew is ready and the schedule won’t wait.
Fast Lead Times and Same-Day Shipping
This is where we separate ourselves from slower suppliers. We offer same-day or next-day shipping and pickup on stocked items. No three-week lead time, no vague promises. You can grab it from our yard or have it on a truck fast.
Cut-to-Order Service
We cut deck to your lengths before it ships. That cuts down field labor, reduces waste, and gets your crew installing instead of measuring and cutting on site.
USA-Made Quality and Expert Support
Our composite floor deck is made in the USA, and we stand behind it. Just as important, you get people who actually understand decking on the other end of the line. We talk through depth, gauge, finish, and accessories so you order right the first time.
Volume Pricing for the Trades
We price for contractors, builders, and fabricators. The more you buy, the better we sharpen the number. If you run repeat projects, that adds up fast.
More Than Deck: Accessories, Roof Deck, and Rentals
A floor system needs more than the deck panels. As a full-line composite deck retailer, we stock the supporting pieces too, so you can source everything from one place.
- Accessories: pour stops, closures, fasteners, and trim. See our accessories.
- Roof decking: types A, B, C, F, and N. Learn more about roof deck.
- Form decking: for non-composite slab applications.
- Rentals: for the equipment your crew needs on site.
Sourcing deck and accessories together means fewer vendors, fewer delays, and one point of contact. Browse our full products lineup to see everything we offer.
How to Order from Keystar
Ordering is straightforward. Send us your project details: depth, gauge, finish, quantity, and lengths. If you only have engineer’s drawings, send those and we’ll help spec it.
We’ll turn around a quote fast, confirm stock, cut to order, and get it shipped or staged for pickup. For most stocked items, that means same-day or next-day. Start with our request a quote form or just call us.
Frequently Asked Questions
What is composite steel floor deck used for?
Composite steel floor deck is used to build elevated structural floors in multi-story buildings, mezzanines, parking structures, and industrial platforms. The deck bonds with poured concrete to form a single structural slab, acting as positive reinforcement so the floor carries heavier loads with less concrete.
What’s the difference between composite deck and form deck?
Composite deck has embossments that mechanically bond with the concrete, so the deck reinforces the slab. Form deck is a permanent stay-in-place form that holds wet concrete during the pour but is not structural. Form deck slabs rely on separate rebar for reinforcement.
What composite deck depths and gauges does Keystar carry?
We stock composite deck in 1.5″, 2.0″, and 3.0″ depths and gauges 22, 20, 18, and 16. Finishes include G60 and G90 galvanized per ASTM A653, plus painted options. We cut every order to your specified lengths before it ships.
Do you offer same-day shipping on composite floor deck?
Yes. On stocked items we offer same-day or next-day shipping and pickup from our Eagan, MN location. Cut-to-order requests and large volumes may vary slightly, so call us and we’ll confirm timing when you request a quote.
Is your composite steel deck made in the USA?
Yes. All of our composite floor deck is quality steel made in the USA. We’re a locally owned and operated vendor, and we stand behind the material and the support we provide with every order.
Can you help me choose the right deck for my project?
Absolutely. Send us your span, load requirements, and finish needs, or just your engineer’s drawings. Our team will recommend the correct depth, gauge, and finish, along with any accessories you’ll need, so you order right the first time.
Get Your Composite Deck Quote Today
When your project needs a dependable composite deck vendor and retailer, Keystar Industries delivers: real inventory, USA-made composite steel floor deck, cut-to-order service, and same-day shipping from Eagan, MN.
Request a quote or call us at (651) 256-0008 today. You can also reach our team through our contact page. Let’s get your floor deck specified, cut, and on its way.