underside of car - bare metal best paints?

[boybiffa]

Hi all

I came here after reading an online tutorial by this website regarding various different paints and how they can be applied etc.

This summer I am planning on stripping the entire underside of my car to bare metal and would like to know what the best/better options are as far as "anti-rust" or "red oxide" paints are.

Would I be better using a zinc content or phospherous paint that effectively "bites" on to the bare metal?

I would be using either paint brush approach Or aerosol. currently have no access to air compressor.

once the bare steel has been coated a good few times I am considering top coating with hammerite "stone chip shield" aerosol a good few times. then the final coat of hammerite white paint (car is white, but have been informed that coating the stone chip will help protect further against rust and muck and water ingress).

any help is much appreciated

Thanks in advance

Rob

 

[steveo3002]

epoxy primer ..something like jotun jotamastic can be brushed on using a cartridge mask

 

[Lawnmowerboy]

Tetraschlutz is the best i think it deadens the sund as well

 

[Weldinator]

Where can you buy these paints from, i have searched for them with no luck, a link would help.

Cheers

 

[Championship White]

Jota is on eBay

http://www.ebay.co.uk/sch/i.html?_f...313&_nkw=jotamastic&_sacat=See-All-Categories

 

[Lawnmowerboy]

Machinemart.

 

[steveo3002]

yep ebay

 

[Punx0r]

My own experience is:

Zinc primer: poor adhesion. Possible corrosion-resisting benefits, but only on *clean* steel.

Phosphate etch primer: better adhesion, modest corrosion resistance

Bilt Hamber etchweld: High zinc etchweld primer. Better, but not amazing.

Standard rattle-can primer: don't bother

Regular hammerite paint: will chip off in months, don't bother.


I'm now looking at 2-part epoxy products. In particular, something like rustbuster.co.uk epoxy mastic, which can be brush applied over wire-brushed sound surface corrosion.

Then a wax or underseal over the top to catch stones and fill scratches.

 

[Weldinator]

I thought machine mart aren't allowed to sell chemicals ?

Cheers for the link.

 

[Lawnmowerboy]

they sell degreaser as well as uther types of paint and the tetraschlutz stuff

 

[squazy84]

i can only comment about the underseal and that is to say just dont bother using the tetraschultz stuff,3m make a good product and so far its not been beaten in my eyes including waxoil stuff and all the rest

 

[vdubz]

Yes the 3m 08861 schutz black underseal is great.