How much time is needed for salt to react effectively as a deicer?

The time needed for salt to react effectively as a deicer is generally around 30 minutes. This duration allows the salt to dissolve into the ice and snow, lowering the freezing point of water, which facilitates the melting process. During this timeframe, several factors contribute to the effectiveness of the deicer, including ambient temperature, the concentration of salt applied, and the existing layer of ice or snow.

While some people might assume shorter or longer periods based on their personal experience, research and practical guidelines suggest that waiting approximately 30 minutes is optimal for observing significant melting. This time allows the salt to adequately work on the frozen surfaces, making it a practical answer for effective deicing.