The Cut or Vaulted Roof is an engineered system that provides open living space directly below the roof rafters as there are no horizontal ceiling joists.

The MBC cut / vaulted roof rafters utilise open metal web posi joists set at a predetermined angle or pitch to achieve the cut / vaulted roof structure.

The open metal web posi joist sees parallel timber flanges that are plated together with an engineered steel web component.

The steel webs are plated in a ‘V’ formation, providing a lightweight structural roof joist that can span greater distances in comparison to a standard solid joists. Insulation is fitted by MBC running up the slope of the cut roof joist.