What rust primer paint

[robrado974 1]

I have been looking at the underside of the car and have noticed some small areas where the underseal has come away and rust has started to appear . What is the best paint to treat this before i apply the underseal again .

Many thanks. Rob

[Jim Bowen 1]

Have a look at the por15 stuff. Ideal for under the car. And then can brush or spray on some schutz.

 

I still find it best to totally sand or grind off all the visible rust instead of just spraying something over it.

[loepan 11]

nice one jim and rob for the question was one i needed answering too

[robrado974 1]

Thanks Jim .this underside project seems never ending ! .

[davidwort 0]

bare metal, warm the panel to make sure totally dry and then use an acid etch primer

Halfords do a upol one: http://www.halfords.com/motoring/paints-body-repairs/car-body-fillers/u-pol-acid-8-etch-primer#tab2

[richman711 10]

Ive never used por15 but heard good things although prep seems to be a major thing

 

Ive been using epoxy mastic 121 on my bug, it remains flexible so is ideal in a place like the underside there it might get hit by stones and the like

 

Although mixing it up is a royal pain:(

[robrado974 1]

Thanks for more replies , I will look into both products.

Rob