B Deck Supplier: How to Source, Stock, and Buy 1.5″ Type B Roof Deck Fast
When you need a reliable B deck supplier, the clock is usually already running. A crew is staged, a roof is open to the weather, and your project schedule has zero room for a backordered load of decking. At Keystar Industries in Eagan, MN, we built our business around that exact pressure point: keeping USA-made B deck in stock, cutting it to the lengths you actually need, and getting it onto a truck or your trailer the same or next day.
This guide is for buyers, estimators, project managers, and contractors who already know what B deck is and now need to source it without drama. We’ll focus on what matters when you’re purchasing: inventory, lead times, quoting, gauge and finish selection, accessories, and freight. If you want the deep technical breakdown of profiles and load tables, we keep that on our roof deck specs page so we can stay focused here on getting you a quote.
What a B Deck Supplier Actually Does for You
Anyone can list a product. A real Type B roof deck supplier does the work that protects your schedule and your margin. The difference shows up the moment something on your job changes.
Here’s what you should expect from a serious supplier:
- Real inventory, not a catalog. We stock 5 B deck in volume across common gauges and finishes so we’re not chasing a mill when you call.
- Cut-to-order lengths. We cut panels to your length so you reduce field waste, scrap, and labor spent trimming.
- Fast, accurate quotes. You get pricing you can actually bid against, not a vague “call us” runaround.
- Same-day or next-day shipping and pickup. Staged inventory means we move fast on freight or will-call at our Eagan yard.
- Matching accessories under one roof. Foam closures, plugs, strips, and pour stops ship with the deck so nothing gets forgotten.
- Expert support. We help you confirm B deck gauge and finish before you commit, so you order right the first time.
That last point saves more money than people expect. A five-minute conversation about gauge and coating beats a re-order, a return, or a corroded deck two winters from now.
B Deck Basics for Buyers (Specs in Brief)
You don’t need a textbook to place an order, so here’s the short version. B deck is the 1.5″ “wide rib” deck that dominates commercial and industrial roofing. It’s the workhorse profile, and it’s almost certainly what your drawings call for if you see “Type B.”
The essentials most buyers ask about:
- Depth:5 inches
- Coverage width: 36 inches per panel
- Common gauges: 22, 20, 18, 16 (with 20 gauge the most common)
- Finishes: Galvanized G60 (typical interior), galvanized G90 (exterior or corrosive environments), or painted
- Standards: Coatings per ASTM A653; profiles and load data per the Steel Deck Institute
That’s enough to start a quote. For full load tables, section properties, and spec-sheet detail, head to our roof deck page rather than us repeating all of it here. Profiles and coating data also align with guidance from the Steel Deck Institute, the American Iron and Steel Institute, and ASTM International.
Choosing the Right Gauge and Finish Before You Buy
Most ordering mistakes come down to two decisions: how thick and how protected. Get these right and the rest of the purchase is easy.
Gauge: matching steel thickness to your span and load
Lower gauge numbers mean thicker steel and more load capacity. For typical commercial roofs, 20 gauge galvanized B deck is the default, but heavier loads, longer spans, or more demanding diaphragm requirements push you toward 18 or 16. Your engineer’s drawings drive this, and we’re glad to sanity-check your takeoff against what we stock.
Finish: where the deck lives decides the coating
Indoor, climate-controlled spaces usually run G60 galvanized. Exterior exposure, coastal or industrial air, or anything corrosive calls for G90 galvanized or a painted finish for added protection and appearance. When in doubt, go heavier on coating — it’s cheap insurance against rust on a structural element you’ll never see again once the roofing goes on.
Quick reference: B deck gauges & finishes
| Gauge | Relative thickness | Typical use | Common finish |
| 22 ga | Lightest | Short spans, lighter loads | G60 galvanized |
| 20 ga | Standard (most common) | General commercial roofs | G60 / G90 galvanized |
| 18 ga | Heavier | Longer spans, higher loads | G90 galvanized or painted |
| 16 ga | Heaviest | Heavy loads, demanding diaphragm | G90 galvanized or painted |
Use this as a starting point, then confirm against your structural drawings. We’ll help you lock it in when you request a quote.
Why Cut-to-Order Beats Buying Stock Lengths
Buying generic stock lengths and trimming in the field feels cheaper until you count the cost. Cut-to-order wide rib deck changes the math.
When we cut your panels to length before they ship, you get:
- Less scrap and fewer offcuts cluttering the jobsite
- Lower field labor because crews lay deck instead of measuring and cutting
- Faster installs and cleaner edges at supports and openings
- Tighter material budgets since you order what the roof actually needs
For most commercial decks, the labor and waste savings from cut-to-order outpace any small premium. It’s one of the most common reasons buyers call us instead of grabbing whatever’s on a big-box rack.
Don’t Forget the Accessories
A B deck order isn’t done at the panels. The accessories are what make the roof weather-tight and code-compliant, and they’re the items most likely to get left off a PO and stall a crew.
Stock these alongside your deck:
- B deck foam closures, plugs, and strips to seal the open flutes at perimeters, walls, and transitions
- Pour stops for concrete-topped assemblies
- Fasteners and related hardware to finish the install
We keep foam closures (B deck plugs & strips) and the rest of our accessories in stock so they ship with your deck. Ordering everything together means one freight bill, one delivery, and no scramble for a missing closure on install day. You can see the full lineup on our products page.
Lead Times, Freight, and Pickup
Speed is where a metal roof deck supplier earns repeat business. Because we carry inventory rather than ordering it after you call, we routinely ship or release for pickup the same day or next day.
Your two options are simple:
- Freight delivery to your jobsite or yard, coordinated to your schedule
- Will-call pickup at our location, 1920 Shawnee Road, Eagan, MN 55122
Either way, the goal is the same: deck in your hands before the schedule slips. Call us at (651) 256-0008 with your timeline and we’ll tell you straight what we can do.
A Supplier Checklist: How to Vet Who You Buy B Deck From
Not every source is built for transactional, deadline-driven buying. Before you commit a PO, run your supplier through this list.
| What to ask | Why it matters | Keystar answer |
| Is B deck actually in stock? | Catalog listings don’t equal availability | Yes — stocked in volume |
| Do you cut to length? | Cuts field labor and waste | Yes — cut-to-order |
| How fast can it ship? | Protects your schedule | Same-day / next-day |
| Is it USA-made? | Quality, traceability, lead time | Yes — USA-made |
| Are accessories available too? | Avoids missing-part delays | Yes — closures, plugs, strips, pour stops |
| Can I get a fast, firm quote? | You need bid-ready numbers | Yes — quick quotes |
| Is there real expert support? | Helps you order right | Yes — we’ll confirm gauge & finish |
If a supplier can’t check most of these boxes, your project is the one absorbing the risk. We built Keystar so the answer to every line is yes.
Why Buyers Choose Keystar as Their B Deck Supplier
We’re a locally owned and operated decking supplier, not a faceless middleman. Over years of serving contractors across Minnesota and beyond, we’ve learned that buyers don’t just want product — they want certainty.
When you buy B deck from us, you get USA-made material, honest stock levels, cut-to-order service, and people who pick up the phone and actually know decking. We’d rather spend five minutes confirming your gauge than ship you the wrong load fast. That mix of speed and accuracy is why customers come back.
Ready to move? Request a quote, contact us, or download our deck list to see what we stock.
Frequently Asked Questions
What is B deck and where is it used?
B deck is the 1.5″ Type B “wide rib” steel roof deck used on most commercial and industrial buildings. With 1.5″ depth and 36″ coverage, it’s the most common metal roof deck profile specified. For full specs and load data, see our roof deck page.
What B deck gauge should I order?
For typical commercial roofs, 20 gauge is the most common choice. Heavier loads, longer spans, or stricter diaphragm requirements may call for 18 or 16 gauge. Your structural drawings dictate the gauge — and we’re happy to confirm it before you order.
What’s the difference between G60 and G90 galvanized B deck?
Both are galvanized coatings under ASTM A653; G90 simply carries more zinc for better corrosion protection. Use G60 for typical interior conditions and G90 (or a painted finish) for exterior, coastal, or corrosive environments.
Do you cut B deck to length?
Yes. We cut to order so panels arrive at the length your roof needs, which reduces field cutting, scrap, and labor. Send us your lengths with your quote request and we’ll handle it.
How fast can I get B deck?
Because we stock B deck in volume, we routinely ship or release for pickup the same day or next day. Call (651) 256-0008 with your timeline and we’ll confirm exactly what we can do.
Do you carry B deck accessories like foam closures?
Yes. We stock B deck foam closures, plugs, strips, and pour stops so they ship right alongside your deck. Browse our foam closures and accessories.
Ready to Source Your B Deck?
Stop chasing backorders. Keystar Industries keeps USA-made B deck in stock, cuts it to your lengths, and ships same-day or next-day from Eagan, MN. Request a quote now or call (651) 256-0008 and talk to a real decking expert today.