How Grit Actually Works (Explained Simply)

Every winter, we’re out spreading grit across roads, car parks and paths — but have you ever wondered what the stuff actually does?

Most people think grit “melts ice.”Not quite.The real magic comes from salt lowering the freezing point of water.

The Quick Version

Grit = rock salt.

Rock salt + ice = salty water.

Salty water freezes at a lower temperature than normal water.

So instead of turning into ice at 0°C, the surface might not freeze until -6°C or lower. That’s why gritting before a freeze is so important — it stops ice forming in the first place.

When We Grit

We monitor temperatures across Edinburgh, the Lothians and the Borders every day. When the ground temperature is heading toward freezing, we head out early and lay a thin layer of grit. As traffic or footfall moves over it, the salt mixes in and does its job.

When Grit Struggles

Below about -7°C, even salt gets a bit grumpy. It still helps with traction, but ice can form more easily.That’s when we use heavier treatments or repeat visits if needed.

The Real Benefit

Gritting isn’t just about melting ice — it’s about preventing it, keeping paths walkable, car parks safe, and businesses open. A small sprinkle goes a long way.

Need gritting or snow clearance this winter?

We cover Edinburgh, the Lothians and the Borders with proactive, temperature-monitored treatments.

Contact Us