Marine primer

[Cruiserhaven]

Pretty soon I am going to have most of the front end body parts for my FJ40 stripped down to bare metal and painted.

What is the "best" (readily available to a body shop) marine grade type of primer that I could specify they use to prime the metal before painting?

TIA.

 

[Rocinante]

Just curious, why would you use a Marine paint? I know nothing about the cleanliness (crap/chunks in the paint) or quality of Marine paint. I do know Automotive paint is held to much higher standards in general, and is milled down and filtered much more then say, industrial types of coatings. I worked at PPG in QC a long time ago, and IIRC, automotive paint was strained though a 5-10 mesh filter prior to shipping, where industrial paint usually went through 75 mesh or higher.

If you're looking to do a higher quality finish I would look at the paint systems by Dupont or PPG, starting with an epoxy primer.

 

[Cruiserhaven]

My #1 goal is rust prevention, rather than show car finish. In the northeast rust is very hard to keep at bay in Cruisers.

I have heard that marine metal primers are tops in terms of rust protection--but if this is not the case I would certainly like to know it and get the name of the *best* rust preventative primer.

 

[bandy rooster]

i've def. considered what your thinking, i'd def consider a marine paint for the under coat , some kind of high yielding urethane - i'd do it because i live on the beach and salt/corrosion is killer here...

 

[brownbear]

I bared my doors/fenders and used POR-15 on the roughed up metal. Then I used the tie coat primer. I thought that would give me the best protection for my body metal.

 

[Cruiserhaven]

I've done the whole POR15/tie-coat thing before, with mixed results and would just assume not go that route again.

 

[my64fj40]

Look into DuPont Corlar as a primer to use. I would get the Industrial version, also known as the cheap version. They make one for automotive, but all it is is a weaker paint that sands easier and cost 3 times as much.


I've yet to find something this paint won't stick too. Also I've need had any problems with "crap/chunks in the paint" and I've been through over 3 gallons. Plus it's a primer so who cares anyway.

 

[Gumby]

DP90

It's an epoxy primer, but I've heard it described as marine grade.

 

[brownbear]

I've done the whole POR15/tie-coat thing before, with mixed results and would just assume not go that route again.

I will say one thing, it is a lot of work to get it all done.

By the time the finish is rough enough for por to stick, and clean enough. Then POR it, then I scuffed the POR with 120 grit so I would get a good bite with the tie coat. Then the tie coat gets 320 grit, before I could top it......

I was pooped.


I have used PPG epoxy primer on aircraft. Its good and tough. And if you then top coat with Polyurethane paint it will last for years.