4 Most Common Types Of Roof Trusses You Should Know

Roof trusses are important in construction. They help support and make the roof stable. However, there are many types of roof trusses. To choose the best one for your project, you need to know its unique features, pros, and cons. We'll talk about four types of roof trusses, what they're like, and how they're used.

King Post Truss 

The King Post Truss is a traditional roof truss. It has two big rafters, a tie beam, and a central post called the king post. This design forms a triangle, providing stability and support to the roof.

  • Advantages and Disadvantages: The King Post Truss is simple and cheap to build, which is its main advantage. It is also suitable for smaller spans, typically up to 8 meters. This truss is not great for big spans because it might not give enough support and stability.
  • Applications: The King Post Truss is commonly used in residential construction, particularly for smaller homes, garages, and sheds. Its simple design and cost-effectiveness make it a popular choice for these applications.

Queen Post Truss 

The Queen Post Truss is a more versatile variant of the King Post Truss. The structure comprises two main rafters, a tie beam, and two vertical posts called queen posts. Queen posts connect the tie beam to a horizontal strut, making two triangles in the truss.

  • Advantages and Disadvantages: The Queen Post Truss is better than the King Post Truss because it can cover a larger area, up to 12 meters. It also provides more flexibility in terms of design and can accommodate additional load requirements. The Queen Post Truss is harder to build and needs more stuff, so it costs more.
  • Applications: The Queen Post Truss works for big buildings with long spaces. It's good for both homes and businesses. It can be found in homes, offices, and even larger structures such as warehouses and barns.

Fink Truss 

The Fink Truss is also called the "W" truss. It has a more complicated design with many diagonal webs that make "W" shapes inside the truss. Webs offer more support and spread the weight equally throughout the structure.

  • Advantages and Disadvantages: The Fink Truss is better than the Queen Post Truss as it can cover up to 30 meters. It distributes weight well and works with many roof styles. The Fink Truss is harder to build, needing special engineering and more materials. This makes it more expensive.
  • Applications: The Fink Truss is popular in many construction projects for big buildings. It has long spans and works well for residential, commercial, and industrial purposes. It can be used in many places, such as homes, offices, warehouses, and big buildings, because it can handle different loads and tasks.

Scissor Truss 

The Scissor Truss has a special design. Its bottom chords slope and meet at the top, making it look like a vaulted ceiling. This design provides both structural support and an aesthetically pleasing appearance.

  • Advantages and Disadvantages: The Scissor Truss makes a pretty high ceiling without extra support. This design also allows for better insulation and ventilation within the roof space. However, the Scissor Truss needs more work and materials, so it costs more to build than other truss types. It is also less suitable for longer spans.
  • Applications: The Scissor Truss is often used in building houses with high or unique ceilings. It is commonly used because it looks good and works well for these purposes.