Sound deadening - stage 1 (Front Doors)

The Defender is noisy inside and at motorway speeds the levels can reach up to 80 decibels.

In order to improve the noise levels Silent Coat sound deadening and acoustic foam will be applied to many of the body panels.

Since the car already has a "Noise Killer" kit fitted, the areas that have not been covered will be treated first.

There is a noticeable area behind each front seat that is exposed and dampened. When stones thrown up by the tyres hit this part of the car, the bang is very loud.

Each section had 2 layers of sound dampening material applied followed by 2 layers of 6mm foam:

Next up, the front doors got some Silent Coat treatment.

The door cards and existing foam liner were removed and the door metal cleaned to remove any grease or dirt. Then the window regulator was unbolted to expose the outer skin of the door.

 The entire outer skin was covered in a layer of sound dampening material and then the flat areas had 6mm foam applied.

 The door was then re-assembled and dampening material was applied to the inner section.

At this point the door bottoms were treated to some Comma Wax n Seal to help prevent corrosion.

Finally, the full inner skin of each door was covered in 6 mm foam as a final noise barrier.