BUILDING SURFACE PRODUCT INCLUDING ATTACHMENT STRUCTURES, BUILDING SURFACE SYSTEM, AND METHOD OF ASSEMBLY

The present disclosure relates generally to building surface systems, for example, suitable for forming an internal or external surface of a building. The present disclosure relates more particularly to a building surface product that includes a panel and a first attachment post extending outward from a rear surface of the panel. The first attachment post includes a shaft having a first end that penetrates the rear surface of the panel and second end that is spaced from the panel. The first attachment post also includes a lip extending radially outward from the shaft that is configured to hold the first attachment post in an aperture of a support structure. The disclosure also relates to a building surface system including a plurality of rails configured to panels that include an attachment post.