NOVELTY - Photovoltaic device kit comprises: (a) at least photovoltaic (PV) sheathing elements, adapted to serve as an outer cladding of a structure, in one or more rows or columns as applied to the structure, the PV sheathing element including a body portion including lower surface portion that directly or indirectly contacts the structure and an upper surface portion that receives one or more fasteners that attaches the photovoltaic device to the structure; and (b) one or more interface members as applied to the structure, disposed under a portion of the PV sheathing elements.    USE - The photovoltaic device kit is useful for constructing photovoltaic device assembly on surface of structure (claimed).    ADVANTAGE - The invention provides system and method for an improved photovoltaic cladding device array with an interface member for use on a building structure with other non-solar cladding materials.    DETAILED DESCRIPTION - Photovoltaic device kit comprises: (a) at least photovoltaic (PV) sheathing elements, adapted to serve as an outer cladding of a structure, in one or more rows or columns as applied to the structure, the PV sheathing element including a body portion including lower surface portion that directly or indirectly contacts the structure and an upper surface portion that receives one or more fasteners that attaches the photovoltaic device to the structure; and (b) one or more interface members as applied to the structure, disposed under a portion of the PV sheathing elements, the interface members including PV sheathing element nesting portion and a building sheathing hasting portion. An INDEPENDENT CLAIM is a method of constructing a photovoltaic device assembly on a surface of a structure, comprising: (a) providing at least PV sheathing elements, adapted to serve as an outer cladding of a structure, in on or more rows or columns as applied to the structure, the PV sheathing element including a body portion including lower surface portion that directly or indirectly contacts the structure and an upper surface portion that receives one or owe fastener that attaches the photovoltaic device to the structure; (b) providing one or more interface members as applied to the structure, disposed under a portion of the photovoltaic devices, the interlace members including photovoltaic device nesting portion and a building sheathing nesting portion; (c) placing and attaching one or more interface members to the surface; (d) placing a first individual photovoltaic device on to one or more interface members in' the photovoltaic device nesting portion; (e) attaching a first individual photovoltaic device to one or more interface members and to the structure; (f) repeating steps (c-e) or (d-e) until a first row of photovoltaic devices is attached to the surface.