Where there is a parking lot, most likely there is asphalt paving and cracks are inevitable. They result from various factors including freeze/thaw cycles, differential settlement, etc. They will cause more and more damage to the point that finally your parking lot cannot be repaired; it must be replaced.
You must get help from a good commercial sealcoating & asphalt maintenance contractor who has the experience in handling this type of situations.
Some cracks are manageable and others are not. The ones that are not are those that are caused by structural fatigue in the pavement. And, the other manageable cracks – if not managed – will likely cause accelerated structural fatigue.
So, it makes good sense to properly maintain/seal the ones that you can. Otherwise, due to normal expansion and contraction of the parking lot, cracks will be created, water will seep in, water will turn to ice, and the ice will expand, creating an even bigger opening for more water infiltration.
And all that water, combined with load stress, chemicals, and oxidation from the sun's ultraviolet rays further accelerate the path to alligator cracking – a sign of a parking lot's structural failure.
Keep them sealed
Obviously then, a key component to a good parking lot maintenance program is keeping water out of the base layers of asphalt where it is likely to cause the most damage. An effective crack sealing procedure is the key to keeping the water out and Parking Lot Maintenance, LLC (PLM) offers that well-tested effective procedure.