What are Roof Trusses?

McMahons are the longest established roof truss company in Ireland. 
Over the last 40 years we have build up a substantial knowledge in both the design and manufacture of roof trusses. During this time we have focused on both quality and service.
Roof trusses, or trussed rafters, are carefully designed individual components that support roofs. Pre-fabricated at our factory, made from high-quality, stress-graded timbers and joined with MiTek steel connector plates. McMahons Roof Trusses supply to both residential and commercial sectors and we take pride in considering no project to be too large or too small.
Starting with drawings or dimensions supplied to our design office we provide a full and detailed design and quotation. On placing an order, one of our Technical Sales Reps will visit the site and take dimensions for shop drawings to be prepared.
Trusses are manufactured to the highest CE standard and delivered to site along with weather proof site assembly instructions completing a seamless and efficient process.

McMahons Roof Trusses complete roof package includes

  • A flexible, practical and fully engineered solution to your roofing requirements 
  • Economy of materials, as trussed rafters can use up to 40% less timber than a traditional cut roof 
  • Reduced labour costs on site, releasing site carpenters for more complex areas 
  • Quick erection of the roof structure, enabling other trades to commence quickly 
  • Reduction in site waste, loss and pilferage of valuable materials.
  • Packaged as required to meet delivery programme
  • Clear Labelling of packs to aid swift site erection
  • Site drawing pack with each delivery
  • Close communication between transport personnel and site staff
  • Scheduled deliveries to site
  • We serve all locations south of Galway and Dublin

Roof Trusses & Gable Ladders


Metal Web Joists 



Contact Us

Address: McMahons Roof Trusses, Dublin Road, Fermoy, Co. Cork

For all your trusses enguiries, please contact Denny Twomey, Roof Truss Sales Representative

Mobile: 086 199 1793

Email: [email protected] 


Other Services We Provide

Plumbing & Heating

Plant & Tool Hire

Roof Trusses

Hardwood & Sheet