undersealing

[totalnova]

Just after some advice when it comes to undersealing and the process involved, I've had a quick look and many people seem to go about things very differently, some start of using acid etch primer some say no primer is needed when using hamerite, any advice?
Cheers Nick.

[Scottcooper85]

I used acid etch primer then a coat of upol gravitex and then brushed over with a tin of underseal and it seams to be on pretty good and thick. I didn't go straight to metal with the underseal as if it cracks and water gets in there's nothing under it to stop it rotting :)

[totalnova]

Would eTch primer then stone chip and then hammerite be the corret order?

[Andy]

Absolutely not
i knew id open this thread and somebody mention stonechip

[totalnova]

Fancy helping out with some advice then?
Like i said so many people underseal in different ways and now im confused.

[Andy]

Raptor guard by upol.Nowt comes close imo.
Etch prime-prime-raptor guard.
You will need a compressor though.
Stonechip is for door bottoms and sills-to protect from stonechips.Underbody needs something far thicker and more durable.

[totalnova]

Thank you, I have a compressor so not a problem. I should have known the difference, I have stone chip all along the bottom of the car and need to remove it.

I'll check out the raptor guard. Cheers Nick.