40 ft Pole Barn Trusses for Sale: A Comprehensive Guide

When it comes to constructing a pole barn, one of the essential components is the truss system. Trusses provide structural support and stability to the building, ensuring its longevity and durability. If you are in the market for 40 ft pole barn trusses, there are several options available to meet your specific needs. In this article, we will explore the different types of trusses, their sizes, and where you can find them for sale.

Types and Sizes of Pole Barn Trusses

1. Gable Trusses

Gable trusses are one of the most common types used in pole barn construction. They are designed with a sloping roof, allowing for efficient water drainage and increased headroom inside the building. These trusses are available in various widths, including 20 ft, 24 ft, 30 ft, and 40 ft . The wider options are typically special order items and can go up to 100 ft wide.

2. Lean-To Trusses

Lean-to trusses are another popular choice for pole barns, especially when adding an extension or additional storage space. These trusses have a shallower slope, usually at a 1:12 ratio, and come in widths of 12 ft and 20 ft . However, they can also be custom ordered up to 60 ft wide.

3. Header Trusses

Header trusses are typically used to support the load above large openings such as garage doors or wide entrances. These trusses are available in widths up to 24 ft . If you require wider header trusses, custom orders may be necessary.

Purchasing Pole Barn Trusses

There are several options available when it comes to purchasing 40 ft pole barn trusses. Here are a few places where you can find them:

1. Best Buy Metal Roofing

Best Buy Metal Roofing offers a wide range of steel trusses for post frame and pole barns. They have gable trusses in stock with a 4:12 slope and widths of 20 ft, 24 ft, 30 ft, and 40 ft. Additionally, they can fulfill special orders for trusses up to 100 ft wide.

2. Blackwater Truss Systems

Blackwater Truss Systems provides complete open pole barn kits that include their 40-foot square-tube steel trusses. These kits are designed for easy setup and include all the necessary components except for concrete. Their trusses are made from durable materials, ensuring the structural integrity of your pole barn.

3. American Pole Barn Kits

American Pole Barn Kits offers pole barn truss kits that include the truss system needed for your project. They provide trusses for various spans, including 36 ft to 40 ft, 42 ft to 60 ft, 62 ft to 80 ft, and 82 ft to 100 ft . They also offer shed/lean trusses at a different price point. These kits provide a convenient solution for those looking to purchase both the trusses and other materials required for their pole barn construction.

4. Menards®

Menards® is another reliable source for purchasing pole barn trusses. They offer a 40 ft post frame roof truss with a 4:12 pitch and a total load rating of 35 pounds per square foot . The trusses are fully assembled and can be customized to achieve higher loadings by decreasing the on-center spacing.


When constructing a pole barn, selecting the right truss system is crucial for ensuring the stability and longevity of the building. Whether you need gable trusses, lean-to trusses, or header trusses, there are options available to meet your specific requirements. Consider reputable suppliers such as Best Buy Metal Roofing, Blackwater Truss Systems, American Pole Barn Kits, and Menards® for your 40 ft pole barn truss needs. With the right trusses, you can build a reliable and durable pole barn that will stand the test of time.

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