Post Frame Building Materials You Can Build On

Whether you're building a barn, a shop, or a complete pole building, MastCo Metals supplies the structural materials you need — all with the fast service and honest support you can count on.

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Our In-Stock Post Frame Materials

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1×4×12

Perfect for bracing, strapping, or blocking in post frame builds.

Tan,Metal,With,Brown,Wainscoting,6x6,Posts,And,Concrete,Flooring

6×6 Posts

Pressure-treated posts

for durable vertical support.

Close-up,House,Retro,Roof,Panel,With,Standing,Seam,And,Fasteners.

Metal Roofing & Siding Panels

Available in Ag Panel, Standing Seam, Board & Batten, and Commercial profiles.

stunning,Red,Pole,Barn,Under,Construction,,Featuring,29-gauge,Red,Metal

Trims & Flashing

Ridge cap, eave trim, corner flashing, and more.

More Materials Coming Soon

2x4 Lumber

For framing and purlins

2x6 Lumber

Common for trusses and girts

2x8 Lumber

Ideal for headers or joists

2x12 Lumber

For structural beams

Roof Trusses

Engineered for your building span

See Our Sliding Doors

Fast Turnaround. Local Support. No Guesswork

Our team works with contractors and self-builders to make sure every post frame order is accurate, on time, and ready to go. We’re adding more materials all the time — and we’re always here to help you figure out exactly what your structure needs.