A decorative, lightweight panel structure that is adaptable for use as interior ceiling panels, interior wall panels, and exterior sheathing or siding, which exhibits excellent rigidity, and which can be made to exhibit a combination of good sound attenuation property, excellent aesthetic appearance, uniformity of aesthetic quality, outstanding weatherability, and/or low manufacturing cost, includes a non-woven fibrous batt comprised of thermoplastic fibers, a scrim layer bonded to each of two opposite sides of the non-woven fibrous batt, and a decorative film layer having a surface indicia on an exterior side and an opposite interior side bonded to one of the scrim layers.