My $67 sound dampening / undercoating

[Driftw00d]

Does it come off easy if you want to take off the bolts underneath there?

[CTScott]

Originally Posted by Driftw00d

Does it come off easy if you want to take off the bolts underneath there?

It really doesn't come off, but bolts break loose without a problem.

[enviri]

i dont even want to think about what's under my car...even with the virgin rear disc brake beam...

[MickZEL]

How well this structure keeps on metal?
Whether will be with corrosion time under it?

[CTScott]

Originally Posted by MickZEL

How well this structure keeps on metal?
Whether will be with corrosion time under it?

It bonds very well to the painted metal. It is made for coating the bed of a truck to protect the paint and prevent corrosion from abrasion.

[MickZEL]

The body should be washed from a dust before drawing?

[CTScott]

Originally Posted by MickZEL

The body should be washed from a dust before drawing?

Yes. Washed very well to remove any dirt, salt and oils and dried completely before applying.

[yougojay]

This is a great idea - I thought about getting some kind of undercoating to do the rear wheel wells as part of them were missed (bare metal) from the factory.

Autozone has a smaller 2.5 pound can of the same stuff for $29.99, in case folks want a smaller can to do just the wheel wells. Will give it a go one day and try a 2'' or 3'' throw-away brush. - Again, this is a great idea, thanks Scott

[CTScott]

Originally Posted by yougojay

This is a great idea - I thought about getting some kind of undercoating to do the rear wheel wells as part of them were missed (bare metal) from the factory.

Autozone has a smaller 2.5 pound can of the same stuff for $29.99, in case folks want a smaller can to do just the wheel wells. Will give it a go one day and try a 2'' or 3'' throw-away brush. - Again, this is a great idea, thanks Scott

The little can is probably enough to do a couple of coats on the wheel wells and a full single coat of the bottom. Just make sure you either apply it outside or wear a respirator. The fumes during application are nasty and dangerous.

[Mittelklasse]

I did this using roof asphalt coating paint. I only painted the half of the wheel wells that is on the passenger cabin side (the car was undercoated from the dealer).

I also attached patches of rubber insulation foam before coating.

It doesn't reduce the road noise that much, but it does noticeably shift the noise's frequency lower.
I also have done soundproofing using weatherstrip rubber on the B-pillars, and rubber insulation foam in the cavities in front of the doors, and underside of the doors.
The noise became less irritating and I can have a conversation in car clearly up to 80 MPH -- where wind noise is starting to have more effect.