Commercial snow removal is the process of keeping a property usable through snow and ice, and some of its biggest problems are created before a plow ever touches the pavement.
Here is one reason why; The pavement under your feet can be as much as 20 degrees different from the air temperature. What’s more, ordinary road salt can melt more than five times as much ice when pavement is 30°F as it can when pavement is 20°F.
So when your weather app says 27 degrees, that is useful information, but it’s also not the whole story.
Your Parking Lot Has Its Own Weather
Most people think about winter weather in terms of air temperature. Snow professionals have another number to worry about: pavement temperature.
A black asphalt parking lot sitting in the sun will behave very differently from a shaded concrete entrance. A proper salting strategy is essentially chemistry, and chemistry gets increasingly stubborn as pavement gets colder.
Roughly 15°F to 20°F pavement temperature is the practical lower range for ordinary sodium chloride. Below that, its effectiveness drops significantly. This is one reason dumping more salt onto a stubborn icy area sometimes accomplishes surprisingly little. The problem may not be the amount of salt.
It may be that you are asking the wrong material to do the job.
A strong commercial snow removal operation should be responding to surface conditions, not simply looking at the temperature displayed on a truck dashboard.
Bring Application
Brine application has become much more common because it can prevent snow and ice from bonding tightly to pavement. Done correctly, that can make snow plowing considerably easier. But there is an interesting catch; more brine is not necessarily better.
Over applying liquid deicers can make a dry surface slippery. Stream-style applications provide a better approach, leaving dry pavement between treated areas instead of soaking the entire surface. It can also be dangerous to apply brine ahead of rain because the treatment can wash away before the snow arrives.
Those white lines you sometimes see sprayed across pavement before a storm are not evidence somebody missed a few spots. The pattern can be intentional. Brine application is less about covering every square inch and more about putting the correct amount in the correct place at the correct time.
Sometimes Salting Can Actually Make Blowing Snow Worse
Under very cold and windy conditions, applying deicing chemicals can occasionally create a problem rather than solve one.
When temperatures drop and snow becomes dry enough to blow across pavement, that blowing snow can stick where chemicals have been applied. In some situations, that can create a hazardous patch that may not have developed on untreated pavement.
That is why winter maintenance cannot be reduced to simply salting when it snows.
Every storm has variables. Wind, pavement temperature, precipitation type, sunlight, traffic and previous treatment can all change the strategy.
Sometimes the right amount of salt is less. Sometimes it is a different material. And sometimes the best move is mechanical snow removal.
The Plow Should Be Doing Most of the Work
Salt is excellent at weakening the bond between ice and pavement.
It is an expensive and inefficient snow shovel.
Lake County’s winter maintenance guidance specifically recommends removing snow mechanically before applying deicer and says not to use salt simply to “burn off” accumulated snow.
That distinction is important for commercial snow removal in Chicago.
Good snow plowing and shoveling remove the bulk material. Deicers handle what machinery cannot remove cleanly and help prevent remaining moisture from becoming bonded ice.
If large amounts of salt are continually being used to compensate for snow that could have been mechanically removed, the property may not have a salt problem, it may have a snow removal problem.
Traffic Quietly Changes the Treatment Plan
Cars are not just driving over deicer. They are moving it. Vehicle traffic can distribute liquid treatments across pavement. Treating travel lanes strategically is essential so vehicle tires help carry material into adjacent areas while reducing excessive application near building entrances.
That means a busy retail center and an empty corporate office parking lot will respond differently to the exact same application. This is another reason commercial snow removal should not be priced, planned or performed as though every 100,000-square-foot parking lot behaves identically.
The pavement may be the same size. The winter operating conditions are not.
“Salted at 4:15 AM” Is Not Much of a Snow Log
Documentation is another area where the problem begins before winter.
The Snow & Ice Management Association’s current standard recommends event records that go considerably further than noting when a truck arrived. Records can include air and ground temperatures, site conditions, operators, equipment, services performed and even the type and amount of material applied.
That information becomes surprisingly valuable.
If one section repeatedly refreezes, you have data to investigate why. When salt usage suddenly jumps, you have something to compare. If one storm performs differently than another, you can look beyond “Well, it was cold.”
That is where good commercial snow removal planning gets interesting.
The first snowstorm rarely creates all of a property’s winter problems.
It simply reveals the ones that were already there.