What to coat underside of cab with.

[49studebaker]

Hi Guys, Just finished welding in patch panels on my 71 GMC. I'm curious, what would I spray the underside of the cab with to protect it? Currently it has just the typical surface rust. I have Eastwoods rust encapsulator ordered but I assume it should have something sprayed over the top of it? What have some of you experienced guys done?
Thanks.

[Orange70chevy]

I used a a putty knife to remove all of the undercoating and dirt. Then used a wire wheel on a grinder to remove any loose rust. Then used a da sander with 80 grit to finish cleaning it up. I use a product called rust cure you spray it on and let it sit for 24 hours. I Epoxy primed the whole under side. Then I sprayed it with some sprayable bedliner. I had it tinted orange to match the color I am going to paint my truck.

[northcountry67]

I used a spray on bed liner. You can also brush it on if need be.

[jugernot]

I just did a recent post asking the same thing. I was going to spray bed liner on the under side of my cab. I learned that the bedliner material in very FLAMIBLE. Some else on the board recomended Lizard Skin. It is a little expensive, but better than rinho liner or line x. I will be using Lizard Skin.

http://www.coollizard.com/