Abstract: A rigid rectangular construction panel, such as a floor panel, has quick release connections along its edges. The panel is made from composite materials in a single work piece. The base of the panel is made up of pillars to separate the body of the panel from the underlying construction surface, such as a concrete slab or wall. The base defines a fluid flow field to permit drainage and drying of the underlying construction surface. An impermeable moisture barrier may be provided to prevent migration of moisture into or through the panel. The panel may be provided with an added, removable surface layer which may be selectively removed and replaced without removing the underlying panel from an installation area. The core of the panel may be provided with a temperature modification element which may interconnect with similar elements in neighboring panels.