NOVELTY - The installation tool (1) includes a fixing member (2) having a sliding plate (2a) along which an adjustment member (5) is slidable, and a lower board (2b) having fixed holes (2b1) through which fixtures are installed and in which block-shaped clay-like adhesive (3) is arranged. The adjustment member has a press unit (5b) for pressing the peripheral part of a top panel of a roof. A securing unit (5c) clamps the top panel between the fixing member and press unit. A temporary fixing unit (5d) clamps the sliding plate and stops sliding of the adjustment member on the sliding plate.    USE - Installation tool for fixing top panel, e.g., solar cell module to roof.    ADVANTAGE - Problem of adjustment member sliding down along slope is eliminated, thus workability is improved. Adhesive rises up on roof lining board around location in which fixtures are implanted, thus blocking up clearance gap between fixtures and roof lining board and improving water barrier property. Eliminates need to heap up adhesive, and eliminates problem of forgetting to inject adhesive, thus providing reliable water stop. Adhesive consists of butyl rubber, thus enabling convenient use of adhesive. Enables top panel to be installed directly onto roof without using elongate articles, e.g., vertical rail and horizontal rail, thus easing construction. Installation tool has simple structure with small number of joints, thus achieving strength and durability. Provides temporary fixing unit that eliminates problems of positioning being difficult. Utilizes electricity supply board for earthing which enables earthing while mounting top panel on roof.    DETAILED DESCRIPTION - The clay-like adhesive consists of butyl rubber.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of the installation tool.    Installation tool (1)    Fixing member (2)    Sliding plate (2a)    Lower board (2b)    Fixed hole (2b1)    Adhesive (3)    Adjustment member (5)    Press unit (5b)    Securing unit (5c)    Temporary fixing unit (5d)