Undercoating prep - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Hair · 11-03-2008, 04:57 PM

What should I do to the bottom of my floorboard before I undercoat it?
I've done some work on it and its' bare steel in many places. The original part of the floor is already undercoated, so I was just going to undercoat the new patch panels too and make it all match under there.
Do I just spray the undercoating over the bare steel?

...or etch prime, then coat?

...or etch prime, prime, then coat?

...or etch prime, prime, paint, and then coat?

...or what?

11-03-2008, 04:57 PM	#1
Hair Registered User Join Date: Mar 2008 Location: Tullahoma, TN Posts: 406	Undercoating prep What should I do to the bottom of my floorboard before I undercoat it? I've done some work on it and its' bare steel in many places. The original part of the floor is already undercoated, so I was just going to undercoat the new patch panels too and make it all match under there. Do I just spray the undercoating over the bare steel? ...or etch prime, then coat? ...or etch prime, prime, then coat? ...or etch prime, prime, paint, and then coat? ...or what?



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