Abstract: A system of reinforcement panels and braces comprising a plurality of panels. Each panel is formed in a generally rectangular configuration of a rigid plastic material. Each of the panels has a parallel upper and lower edge and parallel vertical side edges. The upper edge is formed with projections in a box-like configuration extending upwardly therefrom. Each of the lower edges is formed with a plurality of box-like recesses positioned in alignment with the projections for the coupling of like panels one to another in a vertical orientation. Each of the panels has one side edge with a projection along the length thereof with the other side edge formed with a recess along he entire side edge thereof. Each of the panels has a front surface and a rear surface with a plurality of reinforcement projections to add rigidity to the panel.