I've seen it peel off in sheets where it was painted over clean metal
Por15 ??
Thread Starter
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Por15 ??
OK, I have blasted my passenger door frame, got all the innerds and skin striped off of it, got some cheesecloth in a few places so I got to fix those. Should I primer the areas that are going to get POR15 before painting them?
clean blasted bare steel
clean blasted bare steel
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
Melting Slicks
Joined: Feb 2001
Posts: 2,608
Likes: 3
From: TEXAS - you mean there are other states?
POR-15 says if bare metal to clean with their solvent, then etch with their product. If a surface rust appears afterwards, it is ok - as POR-15 likes that. Do not use any other primers/paints under the POR-15 as it does not bond to those surfaces. Maybe POR-15 has a primer - but I do not recall.
It's funny... POR-15 stuck to the floor of my garage and only god knows what grease and crap is on that floor ! -
Oh - and wear gloves and DO NOT get it in your hair.
It's funny... POR-15 stuck to the floor of my garage and only god knows what grease and crap is on that floor ! -
Oh - and wear gloves and DO NOT get it in your hair.
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
POR-15 says if bare metal to clean with their solvent, then etch with their product. If a surface rust appears afterwards, it is ok - as POR-15 likes that. Do not use any other primers/paints under the POR-15 as it does not bond to those surfaces. Maybe POR-15 has a primer - but I do not recall.
It's funny... POR-15 stuck to the floor of my garage and only god knows what grease and crap is on that floor ! -
Oh - and wear gloves and DO NOT get it in your hair.
It's funny... POR-15 stuck to the floor of my garage and only god knows what grease and crap is on that floor ! -
Oh - and wear gloves and DO NOT get it in your hair.
that tschit will not spray, and I wound up with one HELL of a mess....
it's so bad, I refuse to use it anymore....
Melting Slicks
Joined: Oct 2002
Posts: 2,865
Likes: 1
From: I may be getting old but I refuse to grow up
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Instructor
Joined: Apr 2006
Posts: 232
Likes: 0
From: Henrietta New York
Maybe I am old school but I just can't figure out how a coating can work with rust to stop it. On bodies and frames rust starts from the inside and goes outwards, or so I thought. I prefer the following...
A good sandblasting
2 coats of either epoxy or Zinc enriched primer
2 coats of black for a topcoat.(epoxy if not exposed to sunlight)
Just did my frame this way. Looks great and I suspect it will last a long time. Surely won't be driven in other than sunny days. Birdcage is next.
A good sandblasting
2 coats of either epoxy or Zinc enriched primer
2 coats of black for a topcoat.(epoxy if not exposed to sunlight)
Just did my frame this way. Looks great and I suspect it will last a long time. Surely won't be driven in other than sunny days. Birdcage is next.
Thread Starter
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
I might put a layer of fiberglass on the inside bottom of the door. Got a few holes rusted in it and I want it waterpoof. That metal ready is just an etcher, so either glass or etcher and por15.
suggestions?
suggestions?
Safety Car
Joined: Aug 2001
Posts: 4,883
Likes: 11
From: North Easton Mass
Check out www.rustbullet.com also. I have used it on 2 frames and it sticks to bare metal as well as rusted without any additional surface prep other than the usual degreasing and cleaning. I wouldn't try spraying it since it would be very very very bad to inhale any of this stuff. Both RB and POR cure by absorbing moisture from the air so if you inhale some it will cure immediately inside your lungs.
Rick B.
Rick B.
Melting Slicks
Joined: Apr 2004
Posts: 2,008
Likes: 38
From: Space Coast Gator Territory
I am biased toward PPG epoxy primer and have been using it quite awhile. It has a much longer shelf life, costs about the same, $60/ qt. If you use the black color, it comes in many colors, you will find many uses for it. It sticks to most anything, as long as there is a solid surface and without acid etching. You can apply bondo over it, or just about any other sealer or adhesive. It is a primer, so it will take paint over it. I seldom top coat it as with a little extra catalyst it has a nice semi gloss finish. I don't sell the stuff, but do like what it does. And it can be brushed on.
I do like the POR 15 when I need a gloss finish and rust protection, but in your situation you might consider the PPG DLF. You might also check over on the paint and body forum for an opinion.
Last edited by Red 69; Jul 28, 2007 at 09:47 PM.
Le Mans Master
Joined: Oct 2004
Posts: 5,269
Likes: 54
From: Orlando Florida
St. Jude Donor '05
Use POR on rust and not on clean metal. Any primer sticks better to clean metal then por.... I ordered the por test package for $15 and used it on rust and on clean metal.... I scraped it off my windshield frame because it came off too easy... on rusty parts it's better than anything else...
Before I used the por red69 told me to get some PPG epoxy primer instead....... should have listened.....
Before I used the por red69 told me to get some PPG epoxy primer instead....... should have listened.....
Melting Slicks
Joined: Oct 2002
Posts: 2,865
Likes: 1
From: I may be getting old but I refuse to grow up
Steve
Thread Starter
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
I ended up useing the POR15 on all the surfaces that I had rust issues on, had a little primer on it. Looks good for now. Tomorrow I'll tackle the weld on patches. Only tough one looks like the upper rear corner pn the pass door. But I think I can get it done.
Le Mans Master
Joined: Jan 2006
Posts: 8,319
Likes: 7
From: Wilmington DE, Drive it like you stole it, 68 327 4 speed coupe
limitations are
1. uv sensitive, will need to top coat if exposed
2. lid needs to be closed tight when done or it turns into a chuncky goo
3. you need to use their metal ready to clean if using on bare matal, or treat metal with a self etching primer first (yes this does work with POR 15 )
4. wear gloves cause it will stay on your skin ofr a week or so
expensive stuff but works as advertised when instructions are followed, there are other opstino though
check out the Eastwood Company
cheers
tim