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Who we are

The TRA is the respected voice of the trussed rafter and metal web joist industry in the UK and Ireland. We are committed to stringent standards of quality and service and set a professional benchmark for the industry.

Members include the principal manufacturers of trussed rafters, metal web joists, suppliers and professionals involved in roof and floor design and construction. As the only organisation exclusively representing the trussed rafter industry and with members coming from across the complete supply chain, we are frequently consulted on market or legislative changes.

The TRA requires all its manufacturing members to have third-party supervised Quality Assurance and Professional Indemnity insurance, helping to ensure quality and peace of mind for the customer.

Our objectives

  • Encourage architects, engineers and specifiers to choose trussed rafters and metal web joists as their preferred products
  • Offer expert advice and technical information on design and development of roofs and floors
  • Implement common design and safety standards
  • Develop the professional status of members and their employees
  • Support members by providing a range of services

What we do

Provide technical Information

The TRA is the acknowledged source of specialist information about trussed rafters for specifiers, contractors and end users. We produce a range of publications including the Technical Handbook Site Installation Guide, widely regarded as the industry ‘bible’. The TRA maintains close links with UK and European authorities to ensure that new standards are practical and are implemented across the industry.

Health & Safety advice

Safety is a key issue and the TRA produces guidance on safe handling and storage, specimen risk assessments and other useful information as well as engaging with the HSE to develop best practice for the industry.

Marketing activities

The TRA actively promotes the benefits of using trussed rafters for both domestic and commercial projects through the trade, technical and consumer press. Links are forged with the public and private sectors to ensure the benefits of using trussed rafters are recognised as widely as possible.

Membership services

The TRA provides its members with a range of services including technical updates, health & safety guidance and promotional support.

How to buy?

It couldn’t be easier to buy a trussed roof or metal web joist system to meet your exact specification. Reputable manufacturers are members of the TRA.

When you choose a TRA member, you get peace of mind knowing they have been vetted and approved by the industry’s leading professional association.

Find a TRA member
Trussed Rafter Association