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  • Writer's pictureRoMac Roofing Expert

Unveiling the Strength Above; A Guide to Roof Trusses and Their Types


Roof trusses are the unsung heroes of every building, hidden away above our heads, providing essential structural support for the roof. They come in various shapes and sizes, each serving a specific purpose in ensuring the safety and stability of the entire structure. In this article, we'll delve into the world of roof trusses, exploring the different types and their unique functions.

1. King Post Trusses:

The king post truss is one of the simplest and most traditional types of roof trusses. It consists of a central vertical post (the king post) that supports horizontal beams extending outwards to either side. This type of truss is commonly used in small to medium-sized buildings and is known for its straightforward design and ease of construction.

2. Queen Post Trusses:

Similar to the king post truss, the queen post truss features two vertical posts (the queen posts) instead of one, providing additional support. This type of truss is often used in larger structures or when longer spans are required. Queen post trusses are recognized for their enhanced load-bearing capacity and are ideal for roofs with larger surface areas.

3. Howe Trusses: The Howe truss is characterized by diagonal members slanting towards the center and vertical members extending from the bottom chord to the top chord. This design offers excellent stability and is commonly used in a wide range of building applications, from residential homes to commercial buildings. The Howe truss's versatility makes it a popular choice among builders.

4. Fink Trusses: Fink trusses are recognizable by their "W" shape, formed by diagonal members sloping towards the center. They are lightweight and cost-effective, making them a preferred choice for many residential roof structures. Fink trusses are well-suited for providing support in various roof designs, including gable, hip, and gambrel roofs.

5. Scissor Trusses: Scissor trusses have a unique and visually appealing design. Their bottom chord members intersect, creating a soaring, vaulted ceiling space within a building. This type of truss is often used in churches, cathedrals, and homes where an open and spacious interior is desired. Scissor trusses are not only functional but also add aesthetic value to a structure.

6. Attic Trusses: Attic trusses are designed to create a usable attic space within a building. They feature a raised bottom chord, providing ample headroom in the attic area. These trusses are ideal for maximizing storage space or converting the attic into a livable area, such as a bedroom or office.


Roof trusses are the backbone of any building, ensuring that the roof can withstand the elements and provide shelter for years to come. Understanding the different types of roof trusses and their functions is essential for architects, builders, and homeowners alike. Whether you're constructing a new home, renovating an existing structure, or simply curious about the world above, roof trusses play a critical role in ensuring structural integrity and architectural possibilities.

Incorporating the right type of truss for your specific needs can make all the difference in the longevity and functionality of your roof. So, the next time you gaze up at the ceiling or step into an attic, take a moment to appreciate the beauty and strength of roof trusses—the unsung heroes of architecture.

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