Abstract: A method of installing a tank liner in a tank, the method comprising the steps of: A) adhering a backing sheet to a liquid permeable sheet with an adhesive to form a first panel outside of the tank; B) placing the first panel within the tank against a wall of the tank, with the liquid permeable sheet between the tank wall and the backing sheet; and C) laying up fiber reinforced plastic onto the backing sheet inside of the tank to create a tank liner inside the tank. A tank liner formed of plural panels sealed together to form an encircling wall and an end wall, each panel comprising: a liquid permeable sheet; a fabric sheet adhered to the liquid permeable mesh sheet on one side of the fabric; and fiber reinforced plastic applied to the other side of the fabric.