The perfect ice in two and a half weeks
"Four centimetres below the slab are the cold hoses set in concrete. We start slowly and begin at 10 degrees plus so that no cracks appear," says Stefan Prüwasser, operations manager at Eisarena Salzburg. Cooling down takes a total of ten days, with a cleaning truck coming in between to clean the sheet. When the surface temperature is minus 6 degrees, the water is applied. "The base ice is 1 cm thick, then the lines and advertising are applied. Then another 2 cm of ice follows, so that we end up with around 3 to 3.5 cm of ice after a good two days."
The less ice, the easier it is to see the lines. And: "Energy costs increase by 20 percent for every centimeter of ice," says the expert. The ice now has the optimum temperature of minus 7 degrees, in the ice arena you have to be prepared for 12 degrees.
On August 4, after two and a half weeks, everything was finally ready and training began on August 5. "Since then, we've been back in full operation with 10 to 11 hours a day," says Prüwasser, who is still wearing shorts for the time being.