ASPHALT ANSWERS
Rolling patterns and timing are especially important in the cold. Compaction should begin immediately after the mix is placed, ideally with the breakdown roller positioned only 20 to 40 feet behind the screed. In cold weather sometimes the vibratory mode one pass should be used while the mat is still at its hottest, with a transition to static mode as temperatures begin to fall. It’ s important for the roller operator to read the asphalt to determine the best times to use the vibe and static modes. Smooth, consistent patterns without unnecessary stops are essential, as every delay gives the mat more time to cool. Along with proper rolling practices a heavier screed will help with initial asphalt compaction that could result in better cold weather density results. Because winter paving allows very little margin for error, jobsite coordination must be tighter than at any other time of year. A pre-shift meeting helps align the plant operations, trucking, paver speed, roller timing, and traffic control so everyone works as a single unit. Clear communication between the paver and breakdown roller is especially important to maintain pace and avoid cold joints. Continuous movement is key to maintaining temperature and quality. Surface preparation is another non-negotiable factor. Before paving, crews must remove any snow, frost, ice, or standing water and ensure that the base is stable and not compromised by freeze – thaw cycles. The tack coat must be fully broken and the surface dry. Ignoring these conditions leads to long-term failures regardless of how well the mat itself is placed. Documentation becomes even more important in winter. Recording temperatures, truck arrival and departure times, mix conditions, roller passes, and any changes in weather or jobsite delays helps maintain quality control. This information also protects contractors should questions arise later about performance or durability. Cold-weather paving demands more attention and coordination, but with proper planning, temperature management, and equipment preparation, contractors can continue producing high-quality, durable pavement throughout the colder months. When crews focus on heat preservation, efficiency, and disciplined execution, winter paving becomes not only practical— but profitable.
Shawn Hutchings is a Territory Manager with LeeBoy. He can be reached at shawn. hutchings @ leeboy. com
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