Abstract: The present invention relates to a cladding assembly for cladding a structure, including a frame member, a frame formed by frame members and a preformed panel including a panel member. The preformed panel is formed by a frame member fastened at least partially around an outer edge of the panel member or the panel member being operatively associated with the frame. The frame member of the present invention includes at least two ends and at least five walls including a structure facing wall, an opposed panel member abutting wall, an intermediate wall positioned between and extending substantially parallel to the structure facing wall and the panel member abutting wall, a connecting wall and either an outer frame wall or an inner frame wall. In some embodiments, the panel member is a fire retardant panel member.

Abstract: A construction board comprising a mixture of at least 30 wt % [and preferably at least 40 wt %] magnesium oxide and at least one binding or filling agent forming a core of the board, wherein the board comprises an interior portion positioned in between two opposite surfaces of the board such that at least one reinforcing mesh is positioned in the interior portion of the board.