What undercoating to use?

[pyrofighting]

I have a 68 Mustang Coupe. I need an undercoating that is thick, like bed liner stuff. It needs to be able to be painted also. I want the under of my car the same color as the body. What do I use. I need such a high build becuase I replaced the floor pans so it is not smooth under there. My hope is that something really high build will cover that stuff somewhat, then I can paint right over it. It wont be perfect but better than what it would be if I just primed and painted it. Just for tech, I am using PPG 2 stage paint, Silver. Thanks

 

[TAZ]

Gravel guard would probably work for you.
Different thicknesses are available. You can also paint over it.

We used to spray it out of a special gun that screwed directly in the gravel guard can (part number not avail.).
The spray can type would probably be a pain to use. Plus is sounds like you would need quite a bit. They also clog up pretty easily, especially the coarse g-guard

 

[shaunboy]

we use 3M "no clean up rocker guard" for any under body work that needs painting.
Remember to let any material of this type to dry thoroughly before painting over.

 

[rex]

Wurth USA makes what's called SKS which is basically the same as what Scott said and uses the same gun,blast it on and I think you can paint it in an hour.Probably need 3 bottles for a good coating on the whole bottom if I recall right.It's supposed to be the equivolent of Mercedes and Porche's undercarriage coating they use to 'glue' these things together with.