As temperatures continue to drop, you�re probably already starting to loathe the idea of shoveling snow off your driveway. Still, it�s important to take necessary precautions before winter weather hits in order to ensure the continued life of driveway and sidewalk. When snow melts, water can seep into your asphalt or concrete�s microscopic pores and cracks. When the water freezes it expands, creating stress on the pavement. This process repeats itself over and over during the course of winter, and can eventually cause cracks to occur and widen.