How to Apply Car Undercoating

What You'll Need
Metal sandpaper

Car undercoating and rust proofing are not the same thing. The former does exactly what’s it’s supposed to do, stopping the water, salt and ice on the roads from corroding the underside of your car. Car undercoating is a very effective way to cut down on noise and make your ride more comfortable.

Step 1 - Cleaning

Put the car up on a hoist and clean the entire underside with degreaser. After this, take your grinder and remove all rust spots then wipe away all the dust. Sand down smaller rusted areas with metal sandpaper.

Step 2 - Painting and Priming

Prime all the spots you’ve cleaned of rust with primer and then allow it to dry. After that, cover these area with black automotive paint and once again allow to dry.

Step 3 - Undercoating

To apply the car undercoating you need to use a paintbrush. Make sure you put it on liberally, and cover every part of the underside of the vehicle that’s exposed to the road.  Give the first coat at least an hour to dry (longer if it says so on the tin) and then put on a second thick coat, leaving it overnight to dry fully before driving the vehicle.