How much CLD like Damplifier is needed on a door to stop vibration and reduce road noise? Do you need to do the whole door and panel? I read here that only 25% of the door needs to be covered; is this true, or will the additional Damplifier reduce road noise even further?
How many square feet of CLD is necessary to reduce vibration/resonance in a door? Would 5 sq ft. per door be sufficient for this purpose?