Abstract: A building construction panel for use in wall, and roof construction is provided. The panel is connectable to a substantially similarly construction panel in first side to second side relation. The panel comprises: an exterior skin, an interior skin positioned opposite and parallel to the exterior surface; first and second side portions of the panel adjoining said exterior skin to said interior skin of the panel; said first side portion of said building construction panel spanning between said exterior and interior skin portions at a first edge of said building construction panel, and comprising a sidewardly extending first flange extending adjacent said interior skin; said second side portion of said building construction panel spanning between said opposed front and back portions at a second edge of said building construction panel opposite and parallel to said first edge, and comprising a groove in complemetary shape to said first flange.

Abstract: A plurality of vertically adjacent panels each has an upper edge portion and a lower edge portion, a support being provided for mounting the upper edge portion of each panel and the lower edge portion of the upwardly adjacent panel. The upper edge portion of the panel has an upstanding flange disposed within a first downwardly open channel of the support with screw members extending through the upstanding flange and into the support to retain the upstanding flange in the first channel, and the lower edge portion of the upwardly adjacent panel has a further upstanding flange disposed within a second downwardly open channel of the support, thereby to mount the upper edge portion of the panel and the lower edge portion of the upwardly adjacent panel on the support.