Why should damping sheets be applied strip by strip?
2 Answers
Applying damping sheets strip by strip can achieve better noise reduction effects. Below are the detailed introductions of damping sheets: 1. Installation method: First, remove the four-door trim panels and clean the dirt inside. Then, apply the damping sheets on the metal layer and press them firmly. Cover with a layer of sound insulation cotton, and apply the damping sheets on the trim panel layer as a whole. The door trim panels can be covered with sound insulation cotton or applied on the trim panel layer, and finally, reinstall the four-door trim panels. 2. Function: The damping sheets function to eliminate the low-frequency vibration caused by the metal sheet during idling or driving, which leads to low-frequency noise bands. The sound insulation cotton functions to absorb the medium and high-frequency noise bands generated externally or internally during the car's operation.
After all these years of repairing cars, I've seen various methods of installing vibration damping mats, but applying them strip by strip is the most common. The main reason is to conform to the curved surfaces of the car body: automotive sheet metal structures aren't flat. Areas like doors and roofs have curves, and applying large sheets can lead to wrinkling and gaps, which compromise vibration reduction. By applying strips, I can follow the contours, pressing each strip flat by hand to ensure full adhesion. This also helps control weight—covering entire panels adds unnecessary load, increasing fuel consumption, whereas targeting vibration hotspots like door panel interiors significantly reduces noise. Material costs are minimized by reducing waste; using aluminum foil composite materials with a thickness of 2-3mm ensures longer durability. During installation, it's crucial to clean surfaces first to prevent dust from affecting adhesion. Don't underestimate this method—it may seem simple, but it greatly enhances driving comfort. I've encountered cases where full sheets were applied, only to peel off within six months, requiring reapplication and wasted effort.
