Por 15

[Deleted User]
[Deleted User]
edited November -1 in HUDSON
today my dad and i put por 15 under where all of the stainless steel goes on my commodore, this is some very good stuff from what i hear and should keep it from rusting for a really long time, has anyone else used this on their cars????

Comments

  • Jon B
    Jon B Administrator
    you may want to be careful about putting that anywhere that you intend to do finish painting that's visible. Maybe this is a problem with other anti-rust products, and not Por-15, but I knew of a fellow that used it under his paint and the paint had some bubbling or adhesion problems later. Anyone else know anything about this?
  • rambos_ride
    rambos_ride Senior Contributor
    Jon B wrote:
    you may want to be careful about putting that anywhere that you intend to do finish painting that's visible. Maybe this is a problem with other anti-rust products, and not Por-15, but I knew of a fellow that used it under his paint and the paint had some bubbling or adhesion problems later. Anyone else know anything about this?
    JonB

    POR15 is a good product but is not meant to be applied over a topcoat (paint) - it is also not UV resistant. Bubbling and adhesion problems would most likely be caused by contaminants on the surface or in the air lines - or - the POR15 was used and left out in the elements or weather, which again it is not UV protected so will break down.

    Eastwood tools sells a rust inhibitive primer that IS UV protected and can be left as a topcoat if desired. The Eastwood product is also thinnable by using a good grade lacquer thinner up to 20% making it better to spray with. POR15 can be thinned but you must buy their special thinner.

    DavidH

    POR15 was not really needed in between the stainless strips and body as stainless steel won't rust - unless it is poor quality stainless steel (if a magnet sticks to it - it is poor quality) - but if you drilled holes to mount the stainless - then I would just brush some around the edge of the hole as opposed to coating the entire surface.
  • Jon B
    Jon B Administrator
    I am in unknown territory when it comes to stainless steel trim here (my Terraplane has very little of it!) but I was always under the impression that when it came to rust, this was caused by the steel clips and the steel fasteners that held them to the door. If the clips were stainless steel themselves, or even plastic; or the fasteners were of anything non-rustable -- this might help.



    But I defer to StepDown owners on this one...
  • Unknown
    Unknown
    The Retainer Strips That Holds On The Stainless Would Rust Badly As Well As Body Metal Underneath The Steel Retainers. Por Should Kill The Rust, But Should Be Nuetralized Before Finishing The Metal, Bill Albright
  • [Deleted User]
    [Deleted User]
    this is the dad now. we just applied the second coat using a small acid tyep brush. the first coat filled much of the deep corrosion that was under the stainless. of course its necessary to clean then acid etch prior to the first coat. tomorrow we will apply the da sander with 320 as we have done with the rest of the body. to top coat this stuff it must be sanded or a special bonding primer must be used just prior to painting. and the car is black besides. i will keep posting results as we go along.

    davidh
  • faustmb
    faustmb Senior Contributor
    I have used POR 15 in the past, good stuff when used correctly. It works very well, but it sensitive to UV if left out. If it is in an area that will be topcoated, spray a light coat of the primer you intend to use over the POR 15 before it dries to help the paint adhere. It dries very hard and smooth, so sanding it after the fact can be quite some work. It works great for floor pans, frames, etc.



    Matt
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