Abstract: A sound absorber is made primarily out of a triangular fiberglass panel. The front face of the sound absorber is covered with porous material. The side edges of the panel rest against walls in a room. A fiberglass pad may be attached to the back face of the panel.

Abstract: A frame is provided for mounting on a molded fiberglass-honeycomb composite panel structure, said frame comprising an elongated, substantially U-shaped member having a top and a bottom wall joined by an end wall to form a lengthwise channel for receiving the edge of said panel, the end wall being convex away from the channel, whereby the panel edge is restrained from deformation and a plurality of panels having the frame mounted on the edge thereof can be placed in an edge-to-edge abutting relationship to provide snug joints therebetween. Further provided is a composite panel structure with such a frame mounted thereon. Also further provided is a process for applying a relatively thin, flexible sheet onto such a composite panel structure using the frame of the present invention.

Abstract: A sound rated flooring is provided comprising a sound attenuation layer having a composite panel structure having a core and at least one acoustically semi-transparent facing of fibrous material bonded to the core and a rigid layer positioned on the sound attenuation layer. A moisture inhibiting barrier may be positioned between the composite panel structure and the rigid layer. A method for constructing a sound rated floor is also provided, comprising the steps of positioning the composite panel structure described herein over a substantially horizontal base surface and then positioning the rigid layer over the composite panel structure. The finished covering is then placed over the rigid layer.