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Trussed rafters are more flexible and cost-effective than many other methods of roof construction. Suitable for both domestic and commercial structures, trussed rafters are proven to be robust and versatile.

Benefits at a glance

  • Speed of construction allows just-in-time delivery to site
  • Space saving – no on-site storage area required
  • Prefabricated components mean reduced labour costs
  • Suitable for a wide range of roof structures and building types
  • Up to 40% more energy efficient than traditional construction methods
  • More thermally efficient than alternative materials
More reasons to choose trussed rafters

The open web design of metal web joists allows easier installation of services such as plumbing and cabling etc. resulting in the reduction or elimination of surface pipework.

Benefits at a glance

  • The wide range of sizes can be adjusted to span greater distances
  • Eliminating the need for loadbearing intermediate walls gives greater design flexibility
  • Dimensional stability means less shrinkage and reduced risk of a squeaky floor
  • Sound performance is improved when used with a rigid strong back (girder)
  • They are more lightweight due to the open web structure
  • Site waste is almost eliminated as they are made to measure
More reasons to choose metal web joists

Technical Enquiry

Send your question to our technical team. Free technical support to all specifiers, buyers and manufacturers of trussed rafters and metal web joists.
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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.

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Trussed Rafter Association