When to use de-icing salt?
When it comes to de-icing roads, driveways, or car parks, timing is everything. The choice between preventative and curative spreading can make a big difference in both safety and salt consumption.
Table of Contents
Preventative Spreading
Preventative spreading means applying de-icing salt before snow or ice forms. This approach ensures safer roads from the start.
- Purpose: Minimizes ice adhesion and prepares surfaces for easier snow removal.
- When to Use: Effective when temperatures drop but precipitation is limited. In harsher conditions, it serves as a preparatory step for later snow removal.
- Recommended Dosage: 7–20 g/m²
Why it works: By acting early, snow and ice are less likely to stick, which speeds up subsequent clearing and reduces the overall effort.
Curative Spreading
Curative spreading is applied after snow has started falling or frost has formed.
- Purpose: Quickly reopen roads and pathways for traffic.
- Recommended Dosage: 20–50 g/m²
While necessary in emergency situations, curative spreading generally consumes more salt and takes more effort compared to preventative methods.
Spreading After Snow Removal
After clearing snow and ice, spreading salt again acts as preventative treatment for future snowfall.
Key Tip: Preventative spreading is always more efficient than curative.
- Efficiency: 1 kg of salt applied preventatively can save up to 5 kg of salt that would otherwise be needed curatively.
- Result: Safer roads and more economical salt use.
