Abstract: Building components include, along opposite edges, opposed pairs of non-planar flanges respectively defining male and female attachment members. Provided on the components are opposite underlying and overlying sections with the male attachment members affixed to the front face of the underlying sections, and the female attachment members affixed to the rear face of the overlying sections. A guide element may extend from the female flanges to facilitate camming of paired female flanges about the male flanges of an adjacent component to insure a snap-fitting assembly of a plurality of components.