Shaftwall system using folded panels, and panel

A panel for a shaftwall system, comprising:

• a panel body with a core having opposing surfaces, a first one of said opposing surfaces being covered by an outer facing layer, and a second one of said opposing surfaces being covered by a backing surface layer, wherein said outer facing layer and said backing surface layer are each made with a paper material or a glass mat material;
• a score line formed in said outer facing layer and said core, defining two folded panel portions, said score line being spaced from said backing surface layer and including opposing edges that meet at a common end, wherein a portion of said core at said score line is not covered by said outer facing layer and said core includes a fracture portion extending between said score line and said backing surface layer;
• said panel body configured to be folded at said common end such that said fracture portion of said core fractures and enables said panel body to move between an unfolded position and a folded position, wherein in said folded position, said panel body forms a folded edge in which said panel portions are arranged so that said backing surface layers of said panel portions are in contact with each other.