Composite Systems

Site-assembled or built-up warm roof systems are also known as composite systems. They are not a true warm roof, as the ribs are typically not in contact with the insulation, but they have many of the same attributes as warm roofs.

The advantages of composite systems are that they offer longer runs without the need for roof laps or waterfall junctions, and when the time comes for the replacement of the outer weather-proofing roof sheet, the system allows for it to be done without disturbance to the operations within the building.

Acoustic boards can be laid within the system to increase sound absorption either from within the building or from outside. Installation of the under-liner sheets can make a building largely watertight allowing other trades to continue below while the roof is completed.