Ziebart underbody sound barrier

What year, make & model car?

Toyota recommends NOT applying any kind of aftermarket underbody rust protection because it can trap moisture and promote rust.

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You want to soundproof the INTERIOR of a Camry? Why and how? Aren't they pretty quiet to begin with?

Ask them what they guarntee in sound reduction in db rating, your car has a rating somewhere, I bet Midas wont guarntee much, or you could test before and after with a cheap meter.

Sure they are, compared to a '47 Chevy LOL

The 97' Camry I traded >

Cheaper solution, see "

Already have these (25 pairs for $7.99) but thanks for your concern;

The 97' Camry I traded >

If the car's interior seems loud, try adding about 5 psi to the tire pressures, or try different tires.

The 97' Camry I traded >

How do you plan on soundproofing it?

Turn up the effing stereo--then you won't hear any road noise. Problem solved.

Tires probably make a bigger difference than any other easy modifications.

Thick coatings like that have long been applied at the factory, including under the fenders of my old VW Rabbit, which wasn't a particularly quiet car, but I don't think they've been for soundproofing. I ended up tearing out the Rabbit's carpeting and covering everything with a sandwich consisting of fiberglass insulation, 1/4" rubber sheet (glued all its seams airtight), and more fiberglass, all the way up the firewall, over the wheel wells (including rear shock absorber towers - they can transmit considerable noise, and VW came out with modified upper bushings), and behind the door panels. I didn't use soundproofing barriers designed for cars, such as Dynamat (hadn't heard of it back then) or foam mat impregnated with stainless steel powder, because I could get sheet rubber for free.

Take a look at the factory body repair manual to see what the manufacturer did to block noise, and compare lower end models (or versions of models) with the more expensive ones.

What was THE POINT in spending all that time, etc., on such a project? Hell, road noise can be hidden by simply turning on the stereo or radio at even a moderate volume.