Rustication

A rustication for preparing reveal bands in the surface of a precast panel, said rustication configured to effect enhanced sealing engagement with a panel-forming surface when formation of said precast panel, said rustication defined by a one piece elongate body of extruded foam, said body comprising:

• an upper surface;
• a lower surface defining a base plane at least a portion of which is configured to engage said panel-forming surface;
• and
• a pair of laterally-spaced sidewall surfaces that join said upper and lower surfaces, each said laterally-spaced sidewall surface including a downward-extending edge that is substantially coplanar with the outward-facing surface of said sidewall surface, said downward-extending edge configured such that a downward force exerted upon said upper surface or said sidewall surfaces when said rustication is engaged with said panel-forming surface tends to splay said downward-extending edge along said panel-forming surface.

A rustication for preparing reveal bands in the surface of a precast panel, said rustication defined by a one piece elongate body of extruded foam with a core section and an outer section, said outer section comprising:

• at least one upward-facing surface;
• a lower surface coupled to said at least one upward-facing surface, said lower surface defining a base plane at least a portion of which is configured to engage a panel-forming surface;
• and
• at least one downward-extending edge that projects below said base plane such that upon formation of said precast panel, said rustication exhibits enhanced sealing engagement with said panel-forming surface.

An elongate body of extruded foam, said body defining an upper surface, a lower surface comprising a concave portion, and a pair of laterally-spaced sidewall surfaces extending between said upper and lower surfaces, wherein:

• each of said laterally-spaced sidewall surfaces terminates at a downward-extending edge defined by said concave portion of said lower surface;
• said respective downward-extending edges define a sealing edge plane;
• and
• said respective downward-extending edge and said concave portion of said lower surface define a gap between said lower surface and said sealing edge plane.