Underbody primer/paint/underseal question

[buddyrich 0]

Just after a bit of advice re. the chassis of my mk1.

 

The chassis is covered in a thick layer of underseal, which Ive removed in certain places where repairs were needed. Now that Ive made those fixes, whats the best way to seal up the body? It currently has a layer of what seems to be white/grey primer or paint (maybe stonechip?) with a thick coat of underseal, which seems to have worked well as the chassis is in good nick, the usual problem areas aside.

 

With that in mind, I dont really want to strip off all the underseal as it seems to be doing its job. Could anyone recommend how should I deal with the exposed repair areas? Primer or paint and then underseal? If so, any advice on which primer or paint?

[nascar66 74]

I use gravitex but have always stripped the underside first before applying and then paint over the top!

[Neil. 118]

POR15 is great, it chemically bonds to the metal & is extremely flexible. The only thing it doesn't like is light

[J2S 169]

Raptor for tinted over a zinc primer