Some people only talk about automotive undersealing for older vehicles, 4WDs and recreational vehicles, trailers and machinery, but even modern vehicles can benefit from under-car protection.

Why do we underseal vehicles?

There are two main reasons for using an underbody protection mixture on your vehicle. Firstly, to protect your vehicle from corrosion. Rocks, road debris, road salt, and sea salt all have the potential over time to damage the metal surfaces of your car, truck, van or trailer, especially the chassis, floor panels, suspension, wheel arches, and inside door panels. Because Christchurch is coastal (and there are nearby ski fields) protection from salt is a good idea.

The second reason is for sound deadening. For this the mixture can be applied under bonnets, boots, bulkheads and inside the floor panels in order to reduce the amount of road noise and engine noise reaching the driver and passengers. You might be surprised by how much a quality under-car sealant can improve the driving experience – especially important for professional drivers such as couriers, taxi drivers, farmers and earthmoving specialists.

Keep an eye out

The layer of underseal applied by the vehicle manufacturer can become thin and chipped over time. It pays to watch out for bare metal.

Moisture and mud

When moisture and mud get trapped in hidden parts of your car (such as sill covers) it can lead to the beginning of rust patches. Horrors!

Careless tyre fitters

Not everyone is careful with your vehicle’s undersealing: tyre fitters or mechanics can chip the protective coating when working on your car.