40x80 Metal Buildings

Bolt-up 40x80 buildings are built to last and withstand the harshest environments, with warranties of 30+ years. They're also virtually maintenance-free. For a slightly higher investment, you get a custom, commercial-grade, solid steel framed (not light gauge) building that adds value to your property. A structure of this size is popular for commercial, farm, and residential applications. Get started with competing quotes.

Base model
Standard Kit
BuildingsGuide ©
Made in USA
Steel I-Beam
30 Yr Warranty
Custom Engineered

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Building Features

The standard kit contains everything you need for a basic structure, including pre-drilled primary steel I-beam framing and secondary framing, pre-painted PBR metal wall and roof panels, and all the necessary fasteners and sealants. You then customize this to suit your intended use by adding framed openings for doors and windows - sized and positioned to your specs.

  • Features

    Primary Kit Features:

    American-made, I-Beam steel framing, custom-engineered in factories across North America.

    • Customizable to suit any application
    • Designed to meet your local codes
    • Certified to 160 mph wind & 110 (psf) snow load
    • Precision engineering for a weathertight structure
    • Red-oxide primer baked onto all components
    • Low maintenance, with 30+ year warranties
    • 100% usable, column-free space
    • Easily expanded for future growth *
    • Fast construction times

    * if future expansion is a possible requirement, be sure to specify 'expandable end walls' when placing your order.

    Bolt-up steel framing

  • What's included

    Included in the Kit:

    • 1:12 roof pitch (2:12-6:12 available)
    • Tapered steel I-Beams (primary framing)
    • All roof purlins & wall girts (secondary framing)
    • Two framed door openings (add extra if required)
    • Engineer stamped erection & anchor bolt plans
    • Pre-painted 26-gauge metal roof & wall panels *
    • All nuts, bolts, clips and fasteners
    • Detailed construction manual
    • Pre-drilled, numbered parts
    • Complete trim package
    • Sealants & flashing
    • Structural warranty (30-50 yrs)*
    • Paint warranty (30-40yrs)*

    *Vary by supplier

    Base model shell package

  • Specifications


    • Wind load: 70-160 mph
    • Ground snow load: 10-110 (psf)
    • Available roof pitches: 1/2, 1, 2, 3, 4, 5 and 6:12
    • Roof styles: Gable, single slope, lean-to (LT)
    • Standard bay spacing: 20', 25' and 30'
    • Standard widths: 30' to 200' (clear span)
    • Standard heights: 10' to 40' (eave height)
    • Primary frame: I-beams (min.yield 42k psi) *
    • Second frame: purlins/girts (min.yield 55k psi) *
    • Wall & roof panels: 24 or 26 gauge metal panels

    * vary by supplier

    Sample CAD drawing
    CAD engineering drawing for a prefab steel structure
  • Exclusions

    Items not Included:

    • Delivery
    • Foundation
    • Construction
    • Insulation
    • Additional doors and windows
    • Gutters and downspouts
    • Interior finishing

    Foundation installation

The Construction Process

Red iron building - build process
Read the Build Process Guide

Customization Options

Personalize the appearance of your building by adding custom options like doors and windows in any size you want and roofing colors that match perfectly with its surroundings. Some of the more popular options are detailed below.

Color Options
You can use different siding, roofing and wainscot color combinations to create a unique look for your structure. To see the colors that are available, and for some color scheme ideas, visit our color choices page.

Learn more

Door Options
There are many different types of doors that can be used to access your building, depending on your needs. You can choose from overhead doors, sliding doors, and more.

Learn more

Siding Options
From traditional to modern, there are many different styles of siding that you can choose from when designing the exterior look for your building.

Learn more

Structural Options
Structural options can increase the functionality of your building - add a mezzanine level, a lean to, roof overhangs, porches and more.

Learn more

Why BuildingsGuide?

BuildingsGuide makes finding reputable manufacturers of prefab buildings in America & Canada quick and easy so that you can choose the best vendor for your needs and budget.

Since 2004, over 200,000 buyers have saved an average of 28% on their new structure using our multiple quote service.

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Let us help you find the ideal metal building for sale.

  • Tell us about your project
  • We match you with vetted suppliers
  • You receive four competing quotes
  • Select the most suitable supplier
  • Start your project