Our lattice roof beams or roof trusses can offer the ideal solution for supporting a wide variety of roofing systems due to their excellent strength to weight ratio. Typically one of our lattice roof beams can weigh up to 50% less than its hot rolled steel beam counterpart and yet still achieve spans of up to 40m without the need for intermediate support columns – which can allow designers greater flexibility when working to optimise internal space.
Internal space can also be optimised by passing services through the web of the lattice steel beam rather than having to suspend them underneath causing a significant loss of headroom.
Similarly their aesthetic properties mean that they can be supplied painted and left exposed as part of a ‘feature’ internal roof structure.
In addition to the direct reduction of the environmental footprint of a construction project by virtue of their lighter weight, lattice beams can also help to reduce the environmental footprint of the project by using off-site fabrication to speed up the construction process. The lighter steel beam or steel truss sections can generally be transported and handled more efficiently on site.
Our curved roof trusses can be used to support structural decks with a suspended ceiling. The natural open web of the steel truss allows for the simple passage of services.
Our parallel roof beams can be used to support Z-purlins bolted to cleats pre-welded to the top chord of the steel beam. Liner tray insulation and metal deck provide the weather-proof layer and are fixed to the Z-purlins.
Our pitched roof trusses can be used with a cold rolled steel framework and Z-purlins. Z-purlins can also be used flush fitted to the steel truss to minimise the overall construction depth of the roof.
Our parallel roof beams can be used as long span lattice purlins supported on load bearing masonry walls. In this application timber firrings are fixed directly to flush fitting timber inserts in the top chord of the steel beam. Timber roof rafters are then fixed to the timber firrings to support counter battens, underlay, tiling battens and tile or slates.
Traditional timber purlins can be supported on a pitched roof truss. Ply or similar sheathing is then used to support weatherproofing layers of battens, underlay and roof tiles or slates.
Our parallel steel beams can be used to support a structural deck, membrane, substrate and Sedum roof.
These lattice roof beams can be up to 50% lighter than hot rolled steel beams and use far less steel with considerably less environmental impact than other systems.
Where existing flat roofs are starting to fail or require upgrading, one option to consider is the creation of a new pitched steel truss, or curved steel truss, over-roof which can be constructed quickly and cost effectively using lattice trusses.
The lightweight lattice beam over-roofing system avoids the need to strengthen the existing roof structure and can give an existing building a much needed facelift - typically at a fraction of new build costs.
The new roof trusses can be spaced at much wider centres than other over-roof systems, which results in fewer penetrations and fixings into the existing structure.
The new lattice roof trusses are installed to span across the building and provide a range of benefits for the building owner, including improved water run-off and enhanced building insulation. The additional space created under the new structure can also be used to house building services making usable space available elsewhere in the structure.
We have gained considerable expertise in the design of roof trusses for use in over-roofing projects both large and small.