Door sound insulation is one of the most basic and effective modifications.
Pre-construction Preparation
Gather tools such as a pry bar, screwdrivers, and a heat gun, and ensure the workspace is clean.
Layer 1: Outer sheet metal sound damping
Apply damping sheets to the outer sheet metal, ensuring they are firmly pressed to remove air bubbles.
Layer 2: Inner sound-absorbing treatment
Inner layer steel plate bonded with sound-absorbing cotton to dissipate residual vibration energy.