what to use when undercoating bed and cab

I have a 1960 f100 and need to under coat the undercoat the underside of the bed and cab. What should I use? Also roll or spray on? Something not too expensive. I need to at least mount the bed tomorrow

 

We use Raptor truck bed liner. The kit comes with a gun that go's directly on the quart bottle. It has a textured finnish but it is shiny like paint and easy to clean.

 

I like Raptor too but if you are looking to do somthing inexpensive then I would use
3M Rubberized undercoating. SEM also has one too that I like better but it might
be harder to find.

 

What are the prices?

 

I dont know, somewhere like $8-12 dollars a can. Its a big spray can so two will probably get it done for you. I buy SEM by the case at my paint supply store and I
get a good discount and never really looked at the price per can.

 

Also, make sure you dont use "undercoating". That stuff never dries, it will always be sticky and looks like tar and is brownish in color. Both the 3M and the SEM dry to the touch and are black with a nice texture. Make sure you use "Rubberized Undercoating"

 

X3 on the 3M rubberized undercoat. It sprays down easy and covers well and I believe you can also paint over it, but don't quote me. Also good for inside trunk areas, etc.. Gary

 

i would use an epoxy primer and a quality paint. the undersides of the body and bed do not take the abuse/impact that would require an undercoating, and primer/paint is a much better rust inhibiter than spray can undercoat. the catalyzed bed liner is a better option but unless it is in the wheel wells, which do see abuse/impact, i don't think it is necessary unless you like the look or want some sound deadening. no matter what you choose to top coat use a good primer.

 

I used POR15 and then covered that in Raptor Liner. It may be overkill but I know I will never have to worry about it rusting again.Figure around $150 for the POR and the raptor liner.

If you take this route you need to spray the raptor liner on while the POR is still tacky.

 

I alsoways use a rust encapsulator, like POR-15 or Master Series, then a 2 part bedliner. DOn't use the single part one, like Duplicolor, it, like regular undercoat, seems to stay soft. On a budget, rubberized undercoat.

 

The key word (to me) is inexpensive. you can spend an *** load of money on bullet proof undercoatings that will never see salt and snow again. I don't drive my collector cars in the winter time....much. I wait until fall and stock up with the rubberized undercoating when it goes on sale as a come on to bring people in. I may not use it until August when I'm detailing my under carriage. I keep a couple of cans in stock. I don't need the latest, greatest and most expensive thing to come out. JMHO

 

So you say skip everything and just get rubberized undercoating?

 

I would but as I said I don't drive my collector cars to work in the winter time.

My 56 Ford has a perfect floor and it came from Penna. Yes it has surface rust but a wire brushing and some "on sale" rubberized undercoating has it looking perfect again. If it did not rust out in the 50 years It won't rust out in my life time parked in my garage.

 

same here!

 

I stopped by one of the chain auto parts stores and bought a case of spray rubberized under coats and did the wagon,,probably less than 100 bucks. HRP

 

That's not bad.

I'm just undecided on what to do. Some say use por15 then the undercoating then others say use bed liner.. what should I do...

 

Just seems to me your in SoCal,,por 15 and undercoating seems like overkill to me. HRP

 

I like the raptor for the ease of cleaning under the car after a season of road grim. It is a hard surface and chemical resistant!

 

SEM rock it liner... right at $100 and better than any rattle can **** out there.

 

So don't do the por15?

 

if the underside is rusty, use por15.

 

I used Wurth underbody coating on the pans. Sprayed over Eastwood rust inhibitor. After the 2nd time with the Estwood stuff, I'll never use it again. Go POR-15. The Wurth stuff is awesome. Paintable too. Also used Wurth sprayable seamsealer on the rockers. Taped a line and painted over. Gave it a smooth, factory, rock-guard look on the rockers. I can shoot some pics if you want em.

 

I looked on the underside of the bed and its full of surface rust. So should I brush the por15 directly over the rust then spray rubberized undercoating. Should be good I think. Since you aren't supposed to apply por15 over a smooth clean surface

 

I didn't,,I really don't see the need for it. HRP

 

I do the floors of the cars we build with Body Schutz . It can be painted when fully cured.

 

we also use the raptor bed liner over direct to metal primer.

 

por15 is way overpriced---many products work as well for far less money...

 

You dont need POR 15 with shutz as said above. I had some left over, so I used it. if you're going with a quality shutz, No need for the rust inhibitor IMO. If youre looking for one product or the other, I like the body shutz (Wurth,etc.) More prep but better protection in my opinion. I believe it has to be sprayed rather than brushed. The rust stuff (POR-15, Eastwood) is less prep but doesn't seem as durable. There are different types of undercoating as well. You can research the types for how smooth of a finish you want. They're also available in aerosol or sprayable.

 

I dont think a lot of guys are even reading what you recently said....you have a lot of surface rust under the truck bed.....to put any product over it, you will have to remove, neutralize, encapsulate the rust before coating it with anything! I would never recommend using any undercoat over rust. Paint either. POR, or simialr products, are amde to go over rust, for a quick, bot long lasting fix. It is probably the only product I would put over rusty metal, though I never do it on the outside of the car. Underside, trunk floor, interior floor, yeas, if I can't reasonably remove the rust there.
So I stand by my original sugestion, POR, then bedliner. Or rubberized undercoat.Even though you are in Cali, the rust got under your truck somehow....I'd want to protect it from going any further, if I were you!

 

i like lizard skin spray it with a sholtz gun a little pricey though great for heat and sound barrier