Calcium Chloride Spreading

What This Service Involves

When an arctic blast pushes surface temperatures into the single digits or teens across the Cascade foothills and higher-elevation neighborhoods, calcium chloride keeps melting long after sodium chloride has quit. The pellets pull moisture from the air and release heat as they dissolve, giving them a fast exothermic bite on hard-packed ice. We reserve this material for the coldest events and the shaded, north-facing surfaces that the low winter sun never reaches. Careful metering matters because calcium chloride is more aggressive and more expensive than everyday salt.

Benefits

Stays active down into the single digits when rock salt fails; Generates its own heat to punch through hard-packed ice quickly; Requires a lower application rate per square foot than sodium chloride; Ideal for shaded, north-facing pavement that stays frozen through the day

Our Process

1) Identify the coldest, most shaded surfaces that need a stronger deicer; 2) Pre-clear packed snow to expose the ice bond; 3) Broadcast calcium chloride pellets at a reduced, metered rate; 4) Monitor melt progress and spot-treat any lingering frozen patches

What Affects the Cost

Higher unit price of calcium chloride versus rock salt; Square footage designated for cold-weather treatment; Severity and duration of the arctic event; Number of shaded zones needing repeat pellet passes; Whether supply is bagged or delivered in bulk

Best Time of Year

Calcium chloride is deployed during the deepest cold spells, typically December through January when arctic air settles over the region.