As more snow is predicted across the country, drivers are being urged to exercise caution due to a common winter driving hazard that could lead to costly damage. With frosty conditions expected to create icy roads, authorities are preparing to deploy gritting lorries in large numbers to maintain safety. However, motorists are warned to keep a safe distance if they find themselves behind one of these vehicles.
Gritting trucks are essential for keeping roads navigable during harsh winter weather, but they can pose risks to other vehicles. Experts highlight that the salt used in gritting is naturally corrosive, which can accelerate the deterioration of car paint, headlights, radiators, and metalwork. Over time, this can lead to rust and other long-term damage if not addressed.
Graham Conway, Managing Director of Select Car Leasing, explained: “Gritting is a vital part of winter maintenance, particularly in areas like Glasgow, northern England, and elevated terrains. It plays a key role in keeping roads accessible when snow and ice threaten to cause disruptions.
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“However, it’s important for drivers to be aware of the potential risks to their vehicles and take steps to mitigate them.”
According to the Local Government Association website, UK local authorities are responsible for maintaining approximately 225,000 miles of road, with around 41 per cent of these receiving gritting treatment. However, financial constraints and logistical challenges, such as the difficulty of navigating steep or narrow roads, mean that not all areas can be covered.
Each winter, an estimated 1.5 million tonnes of grit—a mixture of Sodium Chloride rock salt and a smaller proportion of insoluble rock like marl—are used during the “gritting season”. This blend helps de-ice roads and improve traction, reducing the risk of skidding. However, it can also cause problems for vehicles.
Conway elaborated, “Stones from the grit can bounce off the road surface and scratch car paint. This risk is significantly higher if you’re driving directly behind a gritting lorry.
“If the paintwork is scratched or has existing imperfections, salt can penetrate the surface, leading to corrosion and rust if not washed off promptly.”
On forums like Pistonheads, many motorists have shared their experiences of grit-related damage, including chipped windshields and radiators. Broken headlights are another common issue reported by UK drivers. To minimise these risks, Conway advises avoiding roads during active gritting, which typically occurs between 9 PM and midnight, especially before snowfall or a significant temperature drop.
Conway also emphasised the importance of regular car maintenance during winter: “Washing your car frequently to remove salt residue is crucial. Pay extra attention to wheel arches, as they tend to collect grit.
“Don’t forget to clean the tires as well. They can pick up large amounts of salt and grit, which can then be pushed underneath the car, causing damage to unseen components. Applying a layer of wax can also provide additional protection against salt-related damage.”
Staying informed about weather conditions and local gritting schedules is essential for winter driving safety. Glasgow, for instance, has a unique gritting system tailored to its specific needs, so keeping up with local updates is advisable.
