use in the case of a thaw the impermeable liner and the boards supported by the brackets keep the water contained for future refreezing for purposes of illustration fig9 discloses a method of increasing the height of the perimeter of an ice rink by using the installation technique as described above and illustrated in fig8 however additionally providing an extender bracket 55 securely engaging the board 56 of the perimeter of the ice rink with any securing means such as screws through the holes 59 on the extender bracket back wall 58 as well as the a second level board 57 directly placed on top of the boards 56 of the perimeter of the rink the brackets of the present invention are made of metal preferably sheet metal the metal is punched laser cut or cut to shape by other means known in the art the bracket is bent to shape using a press brake or some other means of forming metal the horizontal member 14 and vertical member 12 may be made with a progressive die to do the punching and forming in the same operation the horizontal member 14 and vertical member 12 are optionally painted or coated to resist corrosion the horizontal member 14 and vertical member 12 are then assembled with the screws into the final assembly the.