In roofing terminology, what is defined as the behind-the-scenes support structure to maintain roof integrity?

The term that defines the behind-the-scenes support structure to maintain roof integrity is best represented by decking. Decking serves as the foundation upon which roofing materials are installed; it typically consists of sheets or boards that create a solid surface for the roofing system. This structure is crucial because it supports the weight of the roofing materials and any additional loads, like snow or maintenance workers. It also provides a barrier against weather elements, protecting the underlying structure of the building.

Rafters and trusses are components of the roof's framing that provide support for the roof structure. While they do contribute to the overall integrity and strength of the roof by distributing loads, they are not the surface upon which roofing materials are laid. Strapping, on the other hand, refers to the horizontal boards that can be placed on top of decking to support the roofing material but does not function as the primary support structure itself. Thus, decking is the correct answer as it directly relates to the overarching support system that maintains the roof’s structural integrity.