Homerun
Red Iron Steel Building Kits
Clear-Span. Engineered to Last.
Pre-engineered I-beam steel kits with column-free clear spans up to 14,400 sq ft. Every primary and secondary member is shop-fabricated, drilled, and labeled — your crew bolts it together on-site. Residential barndominiums, commercial warehouses, agricultural and equestrian buildings, all from the same chassis.
What's Included
Add-ons we'll include in your quote: Insulation, soffits, downspouts, and wainscot — just ask.
Sold separately: Doors, windows, and installation labor. If you'd like our vetted builder network to erect the building for you, we'll provide a separate labor quote based on your site location.
Primary Steel
Hot-rolled I-beam columns and tapered rafters, shop-painted in the signature red-oxide primer. Engineered for your specific snow, wind, and seismic loads.
Roof + Wall Panels
26-gauge factory-painted PBR panels in 16 standard colors. 40-year limited paint warranty, 25-year panel structural warranty.
Engineered Drawings
PE-engineered drawings for your state and county, sized to your local code (snow, wind, exposure). Permit-ready out of the box.
Erection Hardware
Every bolt, anchor, clip, and fastener counted and shipped with the kit. No trips to the steel-supply yard mid-build.
Popular Sizes & Pricing
Real prices on our most-ordered configurations. All include the kit, hardware, and engineered plans — delivery quoted separately by ZIP.
Need a custom footprint or eave height? Start a custom quote — we engineer to your exact dimensions up to 120 ft clear span.
Red Iron vs. Tubular — Which One Do You Need?
A 200-second comparison. The short version: red iron for spans over 40 ft, heavy snow, or commercial use. Tubular for budget garages and shops under 40 ft wide.
| Red Iron (I-Beam) | Tubular 12-Gauge | |
|---|---|---|
| Max clear span | 120 ft | 40 ft |
| Best use | Commercial, ag, large barndominium, riding arena | Garages, workshops, small storage |
| Wall + roof gauge | 26-gauge PBR panels | 29-gauge painted |
| Snow load | Engineered to local code (any zone) | Standard 30 psf; upgrades to 60 psf |
| Cost per sq ft | $15–25 | $10–15 |
| Lead time | 6–12 weeks | 2–6 weeks |
| Foundation | Engineered concrete slab or piers | Concrete, asphalt, or compacted dirt |
| Erection | Bolt-together; crew with crane recommended | Bolt-together; small crew, no crane |
Frequently Asked Questions
What is a red iron building kit?
A red iron kit is a pre-engineered steel building made from primary I-beam columns and rafters (the red-painted structural steel) and secondary cold-formed purlins and girts. The kit ships with every structural member cut, drilled, and labeled, plus all bolts, fasteners, and engineered drawings. Crews bolt it together on-site — no welding, no field cutting.
How is red iron different from tubular steel?
Red iron uses hot-rolled I-beams designed for clear spans over 40 ft and unlimited length — the standard for commercial, agricultural, and barndominium buildings over 2,000 sq ft. Tubular (cold-pressed 12-gauge) uses square tubing best suited for spans under 40 ft and budget-driven garages, workshops, and small storage. Red iron costs more per sq ft but supports far larger spans, higher snow loads, and crane loads.
What's included in a red iron kit?
Engineered red iron frame (primary I-beams + secondary purlins and girts), all bolts and fasteners, and state-specific engineered drawings. Optional add-ons we'll include in your quote: insulation, soffits, downspouts, and wainscot. Doors, windows, and installation labor are sold separately — we'll provide a separate labor quote from our vetted builder network if you want us to erect it for you.
How wide can a red iron building be without interior columns?
Standard pre-engineered red iron spans up to 120 ft column-free, with 80 ft and 100 ft being the most common large-span widths. Anything wider than 120 ft typically requires interior support columns or custom engineering. Eave heights from 10 ft to 24 ft are standard; 30 ft+ available on request.
How long does delivery take?
Standard red iron kits ship in 6–12 weeks from order, depending on size, snow/wind loads, and current factory backlog. Larger commercial buildings (60×100+) typically take 10–14 weeks. We provide a firm ship-date estimate at quote time and update you when the building enters production.
Do I need a concrete slab?
Yes. Red iron columns transfer significant load to the foundation and require an engineered concrete slab or pier-and-grade-beam foundation sized for your specific building. The engineered drawings included with your kit specify the foundation requirements. Most slabs are 4–6 inches thick with thickened edges and rebar; we can recommend local concrete contractors.