Epoxy primer
Cargo Master
Joined: Oct 2013
Posts: 2,580
Likes: 29
From: in a barn
I thought POR15 was a rust encapsulator? I have never used it but I have read it doesnt like bare metal, so if you are going to bare metal use a real epoxy primer. The guys here to are pros I am sure will follow up with the right information.
Mountain Pass
Joined: Aug 2012
Posts: 116
Likes: 11
From: Queen Creek
I sandblasted and sprayed it. You can top coat with a UV version or use a special primer and then you can use another paint over it.
I read POR15 needs "teeth" to adhere to. Their instructions do mention sandblasting within the instructions.
Here's a before and after of the process. Note the black floor in my makeshift sandblasting\paint booth. That over spray has been there going on four years now.
Ernie
I read POR15 needs "teeth" to adhere to. Their instructions do mention sandblasting within the instructions.
Here's a before and after of the process. Note the black floor in my makeshift sandblasting\paint booth. That over spray has been there going on four years now.
Ernie
More Turbo
Joined: Jan 2016
Posts: 535
Likes: 42
From: Scotland
POR-15 needs an etch primer before putting onto smooth metal or it will likely flake off. Just be sure and read the instructions. Its a lot easier to do than getting it wrong and having to do over. Never tried spraying it like above but the media blasting would likely be a good key and alternative to etching it. Dunno if I would risk it though.
Welder User
Joined: Feb 2009
Posts: 5,269
Likes: 50
From: northwest MT
Depends on what you are doing.....
POR stands for Paint Over Rust. Something I wouldn't personally do, but many claim it works.
SPI, DPLF. etc epoxy primers are designed to be applied over clean properly prepped bare metal then top coated with paint
POR stands for Paint Over Rust. Something I wouldn't personally do, but many claim it works.
SPI, DPLF. etc epoxy primers are designed to be applied over clean properly prepped bare metal then top coated with paint
Trending Topics
More Turbo
Joined: Apr 2015
Posts: 525
Likes: 57
From: Kenmore, NY
I've been using the SPI epoxy primer on my '51 F1. I painted the frame with it last year and have found it to be very tough and durable while I work on the balance of the truck. I plan to use it on the entire truck.
It's good stuff and I highly recommend it.
John
It's good stuff and I highly recommend it.
John
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Junior User
Joined: Mar 2013
Posts: 69
Likes: 1
From: NE Colorado plains
Another vote for SPI epoxy primer, Southern Polyurethanes Inc.
Really nice stuff, sprays nice, dries fast, comes in a bunch of colors, is relatively inexpensive, and they deliver FAST!
Nicest epoxy I've ever used.
Really nice stuff, sprays nice, dries fast, comes in a bunch of colors, is relatively inexpensive, and they deliver FAST!
Nicest epoxy I've ever used.
Elder User
Joined: May 2007
Posts: 766
Likes: 6
From: south Fl.
This is the first I heard of SPI - I looked them up online and was quite impressed, Ill surely consider using them in the future. I usually keep some epoxy and
hi build around for small things that I spray, which lately seems pretty often.
I usually make 2 purchases a year from a paint supplier at the swap meet in Daytona beach. I know the fears of not knowing what you're getting at a swap meet but the product seems fresh and the cost is very reasonable, its made by Rubber Seal / Medallion, which has been around for years. So far Im happy with its performance.
hi build around for small things that I spray, which lately seems pretty often.
I usually make 2 purchases a year from a paint supplier at the swap meet in Daytona beach. I know the fears of not knowing what you're getting at a swap meet but the product seems fresh and the cost is very reasonable, its made by Rubber Seal / Medallion, which has been around for years. So far Im happy with its performance.
Thread Starter
|
Freshman User
Joined: Dec 2016
Posts: 48
Likes: 0
From: Old Town fl.
This is the first I heard of SPI - I looked them up online and was quite impressed, Ill surely consider using them in the future. I usually keep some epoxy and
hi build around for small things that I spray, which lately seems pretty often.
I usually make 2 purchases a year from a paint supplier at the swap meet in Daytona beach. I know the fears of not knowing what you're getting at a swap meet but the product seems fresh and the cost is very reasonable, its made by Rubber Seal / Medallion, which has been around for years. So far Im happy with its performance.
hi build around for small things that I spray, which lately seems pretty often.
I usually make 2 purchases a year from a paint supplier at the swap meet in Daytona beach. I know the fears of not knowing what you're getting at a swap meet but the product seems fresh and the cost is very reasonable, its made by Rubber Seal / Medallion, which has been around for years. So far Im happy with its performance.
More Turbo
Joined: Apr 2015
Posts: 525
Likes: 57
From: Kenmore, NY
Just remember to follow their instructions to the letter for best results. For example, they want the mixed epoxy to sit for at least a half hour before spraying-I find that it works best if you let it sit at least an hour, because it dries quicker the longer it cooks before spraying. They also want the bare metal washed with their water based cleaner, which is a mix of rubbing alcohol and some other stuff. Again, I have been doing as they instruct, with great results. Do not use rust converter under their epoxy; they are adamant about that. Bare, clean steel with at least an 80 grit scratch or sand blasted texture. Follow the instructions and the stuff sticks like crazy.
Mountain Pass
Joined: Aug 2012
Posts: 116
Likes: 11
From: Queen Creek
I used SPI on the body panels and really like it. Their instructions do say that if you use 3 coats you can leave it on inner fenders and other areas without a topcoat.
One of the important instructions points that they really stress is that the temperature needs to stay above 65 degrees for 24 hours after spraying or it never fully hardens.
One of the important instructions points that they really stress is that the temperature needs to stay above 65 degrees for 24 hours after spraying or it never fully hardens.
New User
Joined: Nov 2016
Posts: 22
Likes: 0
save the por 15 for mailboxes,kidswagons etc.its junk.google por 15 falling off in sheets.it needs a very rough surface and etching is not enough,get it clean sandblasted and epoxy and paint it.if your on a budget and cant afford proper steps,use por15 or tremclad etc.take a chance.
I have some por 15 test panels,over 2k sanded primer it still peels off after 5 years
I have some por 15 test panels,over 2k sanded primer it still peels off after 5 years