Roof Trusses

The Mon Timber Engineering Division incorporates state-of-the-art design and manufacturing technology to value-engineer and manufacture customised roof trusses.

We use the worldwide, market leading MiTek MBA & Pamir software suite to transform the architectural vision to a value-engineered reality.

Using state of the art engineering, 3D modelling and CNC computerised saws, our manufacturing facility gives you peace of mind that your bespoke roofing solution will meet your building’s demands.

Our specialist team has more than 70 years combined experience in the field, so you know that your project is in safe hands.

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What is a trussed rafter?

A trussed rafter is engineered to provide a structural frame for the support of roof, or similar, structures.

Roof trusses are pre-fabricated from high quality, stress graded timbers and joined with steel nail plate fasteners.

An incredibly versatile roofing solution, trussed rafters can be designed in a variety of profiles and shapes to suit all applications – from the smallest extension, to the biggest ‘Room in the Roof’ or attic project.  In fact, roof trusses or trussed rafters are now specified for the majority of domestic roofs built in the UK and Eire.

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Where are roof trusses used?

  • New build construction
  • Commercial buildings
  • Industrial buildings
  • Residential housing; social housing, private housing
  • Attics or room in the roof
  • Extensions

What are the benefits of choosing a truss rafter?

  • Roof trusses are a versatile, practical and fully engineered roofing solution suitable for a wide range of roof structures and building types
  • Materials savings vs a traditionally built roof; trussed rafters can use up to 40% less timber than a traditional roof
  • Significant installation time savings vs traditional methods of construction
  • Quick erection of the roof structure enables other trades to start work quickly
  • Trusses are pre-fabricated which releases joiners for other work, thereby reducing overall labour costs
  • Speed of on-site construction allows just-in-time delivery to site
  • Limited on-site storage space is needed
  • Reduced risk of damage or loss on-site
  • Large and complex roofscapes can be designed
  • Spans of up to 18m can be achieved
  • Attic trusses or ‘room in the roof’ trusses can maximise useable living space in the property
  • Potentially eliminate steel beams from the roof structure
  • Made from sustainably sourced TR26 graded softwood, a specialist grade for trusses
  • Trusses are designed to EC5 ( Eurocode 5)
  • UKCA accredited
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Designing your roof truss

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Contact us about roof trusses

Fill out your details in the contact form below and a member of our team will be in touch as soon as possible to discuss your requirements.

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Our roof trusses are made-to-measure, so call us to discuss your requirements on 01633 414 414 or email us at

We also design and manufacture Posi joists and I beam joists, so you can buy both your roofing and flooring packages from Mon Timber.

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