New Concrete and Road Salt: What to Do With Walks Poured This Year
October 8, 2026 · JRW Services LLC
Concrete industry guidance is not to use de-icing salts in the first year after concrete is placed, and never to use ammonium nitrate or sulfate. Use sand for traction instead.
If your property poured new sidewalks, a new entrance slab or a new loading apron this year, the snow plan for those surfaces should be different from the rest of the site this winter. Tell your contractor now, not after the first ice storm.
The guidance
The National Ready Mixed Concrete Association's guidance on scaling is direct: do not use de-icing salts, such as calcium or sodium chloride, in the first year after placing the concrete. It recommends clean sand for traction during that first winter instead.
It is just as direct about one class of product: never use ammonium sulfate or ammonium nitrate as a de-icer, on new or old concrete, because they chemically attack the surface.
Why new concrete is different
Scaling is the flaking and peeling of the top layer of a concrete surface. De-icers do not usually dissolve concrete. What they do is keep the surface wet and add freeze-thaw cycles, and water freezing inside the surface is what breaks it apart.
Concrete that is well proportioned, air entrained and properly cured handles that far better. New concrete has not finished gaining strength, which is why the first winter is the one to protect.
What to do this winter
- List the new surfaces. Every walk, slab, step and apron poured this year, on the site map.
- Agree the material. Sand for traction on those surfaces, plowing and shoveling as usual. Salt the rest of the site normally.
- Watch the drift. Salt tracked or plowed from treated areas onto new concrete counts too. Pile locations and plow direction can keep brine off the new slab.
- Hose it off where you can. The same guidance suggests rinsing salt accumulation from new concrete when it is practical.
After the first winter
Normal de-icer use is generally fine on well-built concrete after its first year. Using only as much material as the pavement temperature calls for protects it for longer, and sealing is worth asking your concrete contractor about.
Common questions
Can I put salt on concrete poured this year? Concrete industry guidance says not to use de-icing salts in the first year after placement. Use sand for traction instead.
Which ice melt is safe for concrete? None is completely harmless, but ammonium nitrate and ammonium sulfate are the ones to never use. On concrete past its first winter, using the right amount matters more than the brand.
Why is my sidewalk flaking? That is scaling, usually from freeze-thaw cycles in the surface, made worse by de-icers and by concrete that was not air entrained or properly cured.
Sources
NRMCA, Concrete in Practice CIP 2: Scaling Concrete Surfaces. For how temperature decides which material to use, see at what temperature salt stops working.
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