Roof trusses are an essential component in the construction of any building. They provide the necessary support for the roof structure, enabling the roof to resist the weight of wind, snow, leaves and other loads.

There are various types of roof truss designs available, each with unique features and benefits. Let’s look at some of the different types of roof trusses that are available, along with installation tips for both steel and timber trusses.

Types of roof truss designs

Raised heel trusses: These trusses increase energy efficiency and reduce heating and cooling costs by allowing uniform insulation along the roofline.

King post trusses: These trusses provide stability with a single vertical post and angled rafters, ideal for large-span applications.

Scissor trusses (vaulted trusses): These trusses create vaulted ceilings with sloping rafters and a horizontal bottom chord, adding aesthetic value and spaciousness.

Mono pitch trusses: These trusses provide a contemporary look with a single slope, commonly used in residential buildings and modern architectural designs.

Fink trusses: These trusses are efficient, cost-effective, and common in residential and commercial buildings with a W-shaped design that’s easy to install.

Double-pitch profile trusses: These trusses create a triangular shape with sloping rafters and a horizontal top chord, perfect for gabled roofs.

Pole barn trusses: These trusses have a sloping rafter with a horizontal bottom chord, commonly used in agricultural buildings like barns and sheds.

Raised tie trusses: These trusses have a horizontal tie beam above the rafters, providing extra headroom and allowing for greater insulation depth.

Hip trusses: These trusses have four sloping rafters meeting at a central point, commonly used in residential buildings with hipped roofs.

Why use steel framed roof trusses?

Steel framed trusses are a convenient roofing solution which is manufactured offsite and screws together for easy installation. They have a similar layout to timber trusses but are 40% lighter, thereby reducing OHS risks onsite, as well as eliminating the need for heavy lifting equipment. The ease of putting together steel roof trusses ensures a smooth and safe installation process. Steel roof trusses are stronger and more durable, meaning they will last longer than their timber counterparts. They also don’t require chemical treatments to maintain the frame and insect damage is not a risk with steel.

steel frame roof truss pic

Still want timber roof trusses?

While the advantages of steel frame roof trusses are evident, if you’re still wanting to go down the traditional route of using timber, here are a few installation tips to consider.

  1. Decide on the truss design: Before installation, it’s essential to decide on the truss design that best suits your building. Consider the span, load capacity and roof shape when selecting a design.
  2. Understand how it all fits together: Fitting the members to the roof trusses before lifting can help ensure a smoother and faster installation process.
  3. Attach the ridge beams: Once the trusses are in place, the ridge beams should be attached to the top of the trusses.
  4. Add nails where indicated: Nails should only be added where indicated on the manufacturer’s installation instructions.
  5. Keep the Trusses Aligned: Ensure proper truss alignment during installation to avoid structural issues, safety hazards and costly repairs.

Steel framed roof trusses are the easiest roofing solution due to their strength, durability and ease of installation. Whatever you choose, remember to always prioritise safety during the installation of roof trusses and seek professional advice when necessary.

For more information on the benefits and installation of steel roof trusses, contact Steel Frames Direct today.