Abstract: A bracket molding formed on a bottom rail assembly of a trailer coupled to a sandwich panel sidewall, the bracket molding including: a sloped top surface configured to create a space below a bottom surface of the sandwich panel sidewall to allow contaminants to drain from beneath the sandwich panel sidewall; and a dam formed on the sloped top surface, the dam configured to seal out the contaminants from accumulating in the space below the bottom surface of the sandwich panel sidewall.

Abstract: A bracket molding formed on a bottom rail assembly of a trailer coupled to a sandwich panel sidewall, the bracket molding including: a sloped top surface configured to create a space below a bottom surface of the sandwich panel sidewall to allow contaminants to drain from beneath the sandwich panel sidewall; and a dam formed on the sloped top surface, the dam configured to seal out the contaminants from accumulating in the space below the bottom surface of the sandwich panel sidewall.

Abstract: A composite panel comprises a first outer layer, a second outer layer, a filler layer, and a joint section of the composite panel. The filler layer is positioned between a portion of the respective first and second outer layers. The first and second outer layers are positioned adjacent one another without an intervening filler layer.

Abstract: A composite panel comprises a first outer layer, a second outer layer, a main panel section, and a mating section. The main panel section includes a main filler layer positioned between a main portion of the first outer layer and the second outer layer, and the main filler layer has a first mating edge. The mating section includes a lip formed of at least one of the first and second outer layers extending beyond the mating edge of the filler layer. Composite panel systems and methods of making composite roof panel assemblies are also provided.