Hi,
Among the responses to my "Brushing vs Spraying" question, I received some
interesting responses about using POR-15 on the backside of the rust-free steel
sheet metal wings on my Healey. In the past, I've heard or read only positive
testimonials about this product, but now I'm hearing some things to the
contrary. One person indicated that the product seals in any oxidation, and
that it (rust) will continue to progress underneath the coating, contrary to
what the manufacturer claims. Another person indicated that they were told the
product might not adhere to the zinc phosphate coating left behind by
phosphoric acid such as used by Redi-Strip, or Oxysolve like products. I've
always been told the zinc phosphate coating was a very desireable surface for a
coating like paint or primer. Judging by my past experiences with POR-15, I
can't imagine it NOT adhering to this type of surface. It sure sticks to
everything else it comes in contact with.
Anyone like to shed some light on this?
Thanks,
Scott Helms
|