How To Fix Rust Underneath A Car

Wash the area around the rust spot.

Pinch the edges of the wax paper with the thumbs and index fingers on both hands and hold it up in the air so the mixture is facing the car and away from you. If you mean under car in the sense of frame components thoroughly wire brush them paint them with x tend and spray with a rubberized undercoating looks good and lasts quite a while. Touch up paint is available from dealers auto parts stores and automotive paint suppliers. Sand away rust spots with abrasive sandpaper on a block or use a power drill and grinding disc for large areas of rust.

If the metal hasn t eaten a hole in the metal your repair is simple. Pick up the wax paper with the mixture facing outward. Then treat it with a spray on rust inhibitor and apply primer. In this video im showing you the process i use to do small rust repairs where a complete panel.

Finally cover it with touch up paint that matches the color of your vehicle. When you re done rinse the area with clean water. The best way to do that is to coat the exposed metal beneath your vehicle to keep water and salt from coming into contact with it. Here s a few tips on repairing rust holes in car body panels.

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Step 3 clean the area with a solvent or automotive degreaser to remove dirt grease and oil. This eats the oxidisation stopping the chemical rusting process. The simplest way to deal with rusting underneath your car is to prevent it from happening in the first place. If you want to keep it longer term i d treat the rusty areas on the underbody with a wire wheel brush on an angle grinder rust converter and fresh undercoating after a thorough clean.

It may help to reposition your hands so one is pinching a top corner and one is pinching a bottom one. Wipe down the undercarriage after sanding to remove all dust and sanding debris. First use fine grit sandpaper or a razor blade to remove the rust.