What is a Pre-Fabricated Roof Truss?

A roof truss is a precision-engineered timber structure designed to support the weight of your roof and transfer loads safely to the walls below. Manufactured off-site using graded timber and steel nail plates, roof trusses provide a strong, cost-effective and efficient roofing solution for timber frame homes.

Roof trusses can be designed to suit virtually any house design, roof pitch or span. Standard trusses can span up to 11 metres using 35mm graded timber and up to 16 metres using 47mm timber sections. They are typically installed at 400mm or 600mm centres, depending on the structural requirements of the project.

At Timber Frame Ireland, all roof trusses are individually designed and manufactured to meet the specific requirements of your home, ensuring structural performance, precision fit and fast installation on site.

A Roof Truss Requires 40% Less Timber Than a Traditional Cut Roof

95% of Irish Roofs are Trusses..

Pre-fabricated roof trusses are now used in 95% of new build roof structures. A roof truss uses approx. 40% less timber than a traditional cut or pitched roof. Precision engineering & off-site manufacturing results in time & cost savings, along with eliminating site wastage.

roof truss ireland
roof truss in ireland

Roof Trusses Allow for Much Greater Spans


Greater clear spans can be accommodated without the need for additional supports, resulting in cost savings & avoiding lengthy engineering processes.

We Cover All Roof Truss Types


Depending on your architecture, there are a variety of roof truss design options. Scissor trusses for example are a popular choice for vaulted ceiling spaces; a hybrid of a standard truss & cut roof cathedral ceiling, using slopped bottom chords to created an inverted V-Shape inside the room.

An attic truss, also known as a ‘Room in Roof’ (RiR), is a roof truss with an open section accommodating an additional living space within your roof. The habitable area of a build can be increased by up to 40% at little to no extra cost. Attic trusses can also be designed with open metal webbed joists (posi joists), offering additional strength and facilitating the run of services to the space.

  • Standard Truss
  • Fink Truss
  • Attic Truss
  • Scissor Truss
  • Raised Tie Truss
  • Duo (Fink) Web
  • Stubbed Attic Truss
  • Bottom Chord Truss
  • Curved Truss
  • Mono Truss

The Benefits of a Roof Truss

Speed of Construction

Manufactured off-site, reducing labour.

Saves You Money

Time savings & reduced timber quantities.

Greater Spans

Accomodates greater spans without steel.

Environmentally Friendly

Requires 40% less timber than a cut roof.

Design Flexibility

An excellent choice for those complex builds.

Precision Engineered

Quality controlled design & engineering.