Car Door Sound Deadening - Before and After Cheap Insulation - Renault MEGANE MK3 GT Line

The car door rattle is one of the things we always wanted to fix and improve. Noise from a slammed door is one of the most annoying things, but luckily it can be fixed. Car door insulation and soundproofing can be done in different ways, depending on the car model and the stuff you have for soundproofing.
Usually, the rattle will come from loose parts which will vibrate and not enough factory insulation which allows a lot of overtones when the door closes.
Most foam tapes and soft items will help with overtones and will provide soundproofing.
We used self-adhesive foam tape which is usually used for ventilation insulation, but it worked quite well for car door insulation. Additionally, we used 3M rubber for the edge of the door which provides some cushioning when the door closes, so it does not slam as hard.

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0:45 - Door panel removal
3:04 - Insulation
4:45 - Rattle fix
7:41 - Results

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