Hey,

This is in my 1996 Ford F150 Regular cab,

Now the roof is a 2 layer job the steel outer skin and a steel inner skin with about 3/4" to 1" of space between them.

Do you think this will work for mellowing out the vibrations

I am thinking of pulling down the headliner and drilling holes on about a 12" grid pattern into the roof. then injecting expanding foam into said holes (low expansion stuff)

that should effectively link the 2 sheets into one mass that will resist vibration


Thoughts?

I would like to stay away from using a product like brownbread or dynamat between the headliner and roof.

 

It might work... but I'd get lots of masking tape and a drop sheet because its going to get messy fast

 

You are almost guaranteed to get some distortion of the outer roof. If you do this, I recommend a lift kit