The majority of tap water is considered to be “hard water”, meaning it is rich with minerals. When hard water is left to dry on the paint, the water evaporates and mineral deposits remain on the surface of the vehicle. These mineral deposits, or water spots, are very stubborn and will really bond to the paint which can make them difficult to remove. Spots may also be formed from acid rain.
Mineral Deposits (Above Surface Contamination)
If you’re unable to remove the deposits with washing or claying, and you are certain the defect you are seeing is an above surface defect, then you should consider purchasing a dedicated water spot removal product.
Etching (Below Surface Defects)
If you have tried washing, claying, and water spot removers but haven’t been able to remove the spotting, chances are you’re dealing with a below-surface defect. The minerals that form the water spot can start to eat into your paint creating a small etching below the surface of the clear coat. Like swirls and scratches, these etchings are repaired by removing paint in order to level the surface. In order to do this, we must begin a paint correction process utilising various pads, products, and machines to refine the surface and eliminate the defects.
WATER SPOT REMOVAL on a Ceramic Coating | What Product Works Best? By The Rag Company