Key takeaways
- Traction first. Sand makes the surface walkable while you work on the ice.
- Undercut the bond. Calcium chloride bores down to the pavement so the ice lets go.
- Timing matters. A sunny afternoon does half the work; 5°F at dawn does none.
- Lift, do not hammer. Chipping damages concrete, pavers and stamped surfaces.
On this page
Why thick ice is so hard to remove
A thin glaze melts from the top down. Thick ice is different: it is bonded to the pavement, and salt sitting on top has to melt through the whole layer before anything lets go. That can take a very long time, and in deep cold it may not happen at all with rock salt.
The trick is not to melt the ice. It is to break the bond between the ice and the pavement, then lift it off in sheets.
Step 1: traction now
Before anything else, spread coarse sand on the paths people need to walk. It grips immediately, at any temperature, and keeps everyone upright while you deal with the rest.
Step 2: undercut the bond
Spread a small amount of calcium chloride over the ice. It works in much colder conditions than rock salt, and its pellets bore down through the ice toward the pavement, creating channels of brine. When the brine reaches the pavement, it spreads underneath and weakens the bond.
Use it sparingly, and scatter it rather than piling it. On new concrete, skip it and use sand only. See protecting new concrete.
Step 3: wait for the right moment
Let the melter work, and let the weather help. Ice that will not budge at 7 a.m. at 10°F often releases by early afternoon when the sun hits the pavement and the air warms. Fighting bonded ice at the coldest part of the day is the hardest way to do it.
Step 4: lift, do not hammer
Once the ice is undercut, use a flat, square-edged ice scraper or a sturdy shovel held low, almost parallel to the pavement, and push it under the edge of the loosened ice to pop off sheets. Work from the edges toward the middle, where it was undercut first.
Avoid pickaxes, chipping bars and heavy hammering. They gouge concrete, chip pavers and destroy stamped texture, and the damage lasts far longer than the ice.
What not to do
- Hot water: melts the top, then refreezes into a smoother, more dangerous sheet.
- Rock salt at 5°F: it has almost nothing to work with. See does salt work in cold weather.
- Fertilizer: damages concrete and pollutes runoff.
- Torches or heat guns: a burn and fire hazard, and they can damage the surface.
Why it keeps coming back
Thick ice almost always has a water source: a downspout discharging onto the driveway, a snow pile melting across it, or a low spot that holds water. If it forms in the same place every time, fix the source and the problem mostly goes away. Our guide to why a driveway ices in the same spot covers the diagnosis.
When to call someone
If the ice covers the whole driveway, sits on a slope, or you have health reasons not to do heavy work, this is a job for a snow and ice contractor with the right materials and equipment. We treat ice with the product that fits the temperature, and we will tell you when the honest answer is to wait for the afternoon.
Sources
- Minnesota Stormwater Manual: how salt works and deicing chemicals — practical working temperatures
Written by the Macomb Lawn & Snow Solutions team in Macomb Township, Michigan. We plow and salt homes and businesses across all 26 Macomb County communities, November 15 to April 15. Published September 28, 2026. About us · How we research these guides · How our dispatch works