How much salt does it take to de-ice a sidewalk?

Snow and ice are a fact of life in Wisconsin. Shoveling is hard work, snowblowers make a lot of pollution – what is a homeowner to do?

Some deal with the problem by spreading salt on their sidewalks and driveways. While this is an effective practice that takes advantage of natural processes to efficiently solve a problem, many people greatly overestimate the amount of salt that is needed to accomplish the task at hand.

Just 1 to 3 cups of salt (approximately 1 to 3 pounds) per 1,000 square feet is plenty, says Dane County’s My Fair Lakes program. Property owners can use even less salt if they wet it before tossing it into the snow.

Using an entire 50-pound bag of salt, on the other hand, can pollute 10,000 gallons of water when it eventually washes down the storm drains and into the lakes. It also quickly becomes expensive for the homeowner, and the excessive salt can cause significant damage to pavement.

While salt is effective at melting snow, it’s not meant to be the sole solution to snow removal. After salting the driveway or sidewalk, wait 15 to 30 minutes. During this time, the salt will melt its way down to the pavement and unfreeze the snow from the ground. You’ll then be able to easily shovel it, resulting in a clear driveway or sidewalk.

Finally, remember to check that the type of salt you’re using is appropriate for conditions. Each kind of salt is only effective down to a certain temperature; if it’s colder than that, the snow won’t melt no matter how much salt you use.

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How much salt does it take to de-ice a sidewalk?

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