NOW-4100 is an open-joint, route-and-return variation of the rainscreen principle.
This aluminum composite panel system allows for improved ventilation and moisture control and is suitable for interior and exterior use. Exterior use requires an uninterrupted air barrier, with a perm rating suitable to project geography.
NOW-4100 is a route and return system that features proprietary, interlocking extrusions at pre-determined locations (integral stiffeners strengthen the field of the panel). The material return legs are fully exposed for a clean, open joint. Because the weatherproofing is a component of the inner barrier, panel joints do not require field-applied sealants. Note that the inner barrier is exposed through the open joint.