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Boxspan Roof Frames

Roof frames, rafters, roof beams & lintels

Boxspan roof frames and rafters are suitable for use with both steel and timber framed homes. Boxspan is extremely efficient in roof framing. Long spans and light weight make architectural  such as cathedral ceilings, exposed trusses and roomy lofts more feasible than ever. Boxspan is also used in commercial roof applications such as schools.

Why Boxspan for roofs?

  • Handling Boxspan rafters is easier as they are lighter than timber rafters.
  • As blocking is not required, even for long spans it leaves a tidy finish for exposed rafters.
  • Long-spanning Boxspan reduces the need for structural beams giving you a straight ceiling with fewer bulkheads.
  • Boxspan roof frames are supplied as a complete, designed system to strict deflection criteria.
  • Boxspan can reach a similar span for less depth than timber.

Why Boxspan for roofs?

  • Handling Boxspan rafters is easier as they are lighter than timber rafters.
  • As blocking is not required, even for long spans it leaves a tidy finish for exposed rafters.
  • Long-spanning Boxspan reduces the need for structural beams giving you a straight ceiling with fewer bulkheads.
  • Boxspan roof frames are supplied as a complete, designed system to strict deflection criteria.
  • Boxspan can reach a similar span for less depth than timber.

Roofing applications

Boxspan cathedral ceiling frame
Raked cathedral ceilings

Long spanning Boxspan rafters make raked skillion roofs and cathedral ceilings in homes a perfect choice. The enclosed boxed section as rafters makes it just as easy to fix the soffit as it is to fix roof batten for sheeting or tiles above. Because the beams are light it makes the job very easy to construct.

Powder coated Boxspan exposed roof frame
Exposed roof frames

Either open like a pergola or a covered carport exposed roof frames are where Boxspan rafters and roof beams excel. The closed box section resembles a timber shape. It also makes it easy to hide cables for lightning.

Wide spanning Boxspan roof trusses
Large spanning roof trusses

Builders of school COLA’S, agricultural and industrial structures gain from using Boxspan beams as a truss, rafters or purlins. Trusses are able to span further because of the ability to connect to both sides of Boxspan, which gives better torsional strength. The closed section has a very attractive finish compared with open sections such as “C” purlins with added benefit of nowhere for birds or rodents to make a home.

 Large spans, less depth!

Boxspan rafters typically require less depth than timber rafters to reach the equivalent span.

Check span tables

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