What is "body filler" used for in repairs?

Body filler is primarily used to smooth out minor imperfections before painting, making it an essential component in the repair process of automotive surfaces. When a vehicle’s exterior is damaged, such as by dents or scratches, body filler is applied to the affected areas to create a smooth, even surface. This ensures that the final paint application adheres properly and provides a visually appealing finish.

The function of body filler is not to reinforce structural components, replace damaged metal sections, or serve as a protective layer against corrosion. Instead, it is specifically designed for cosmetic repairs to enhance the appearance of the vehicle rather than to address structural integrity or corrosion issues. By focusing on achieving a smooth surface, body filler helps ensure that additional finishing processes like painting yield the best aesthetic results.