POR 15 application

[13 Legion]

Recently replaced my floorboards. Welded in my driver side floor pans and seam sealed patch panels top and bottom. My next step is to purchase the 3 part POR treatment. I noticed on the marine clean application is says to spray down, clean and rinse the area off and allow to dry. I'm not to crazy about rinsing off ( with a hose) the drivers side. Reason being the floorboard drain cap is no longer, since that area was patched. I don't really want to drill a 'drain hole' in my newly installed panels. Is it possible to just purchase a paint etching primer and than apply POR? I know many here have used this product and I'm sold on it as well. Any help is appreciated.

[91Pioneer]

POR stands for "paint over rust". If you have new metal in there, use another product IMHO. Save POR for other applications where it's more appropriate.

[13 Legion]

I want to treat the entire cab floor with this product. Not just the patched portion. I understand it's a paint over rust product. People do the entire chassis of old cars with this type of product. I want to use it as a rust stopper and a preventative. Or am I viewing this products use in the wrong manner? My entire cab floor is mainly some surface rust as well as paint from the factory in other areas. Scale of 1-10...10 being unsalvageable rust bucket, I'd say mine is a 3-4.

[MancheKid86]

there is nothing wrong with trying to prevent rust with por15, the three step system is the way to go.

 

just because it is called "paint over rust" does not mean you have to solely paint over rust, lots of members on this board have done it as rust prevention method.

id say go for it.

 

do you have a shop vac? if you you can shopvac all the water out and soak the rest up with shop towel of some sort. i wouldn't substitute marine clean for etching primer

[91Pioneer]

You can do what you want, POR will work on all metal but it's really not designed for fresh new metal (and not required IMHO) but lots of guys use it. But lots of guys use bedliner incorrectly too (hint it's not a rust proofing product).

 

From their own website:

 

Surface preparation: 

Rusted surfaces are best; seasoned metal and sandblasted surfaces are also good.

 

To coat smooth metal surfaces: 
Use POR-15 METAL-READY to prepare surface before painting. Surface must be dry and free of grease, oil, or other foreign substances. Use of 'rust converter' products is not recommended as they may affect bonding of POR-15 to metal. POR-15 likes to adhere to surfaces with 'tooth' rather than smooth, glossy surfaces.

[mikekaz1]

for what it worth, ive used POR15 "3 step"  twice. both times meticulously following the directions and process.       both times it resulted in even worse rust then previously had underneath product.   I am not a POR15 supporter.

[13 Legion]

Well what are some other options than? Like I stated I patched and seam sealed drivers floor. Passenger side is good to go. The cab floor I wire brushed and cleaned up. I'd like to just put some type of coating down to be a rust inhibitor. The rest of the floor is pretty solid.

[mikekaz1]

Its frowned upon by many..... for reasons unknown. But when I replaced my floor (welded and seamsealed also) I scuffed and cleaned everything. Hit it with some galvanized spray paint and then a hefty coat of rustoleum spray bed liner. Its been 2 years and 2 winters, and 1 as a plow truck also and the floors inside and out look just as good as the day I put them in.

[mikekaz1]

The issue I find is POR15 like many "true" bed liners is they are plastic/rubber base and end up sealing in moisture instead of keeping it out. I find that The rustoluem spray bedliner is more of a rough spray paint then anything else. Almost like they just put sand in black paint. So it holds up rather well. But in the end it is just paint so it doesn't hold moisture behind it. I've used this on many parts and many vehicles and never had a complaint with its durability or effects on the metal.

[Baby blue]

Naval jelly on the rust overnight than sand and clean, than just a rust oleum primer should do the trick.