
Winter can be brutal on pavers, walkways, and driveways. Aside from damage done by your snow blower or a plow, frost heave—the natural freeze-and-thaw cycle—can split concrete and knock stones out of whack. To keep out water and help keep a problem from worsening, seal any new gaps in concrete with concrete-crack filler.
Secure loose pavers or patio stones temporarily. If the damage is extensive, consider having a landscape contractor dig up and reset the stones, making sure to start 6 inches below the soil line to minimize shifts from future frost heave. Tackling this project now, while pros are less busy, may cost a bit less than booking a repair at the height of the season.