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Author Topic:   Painting galvanized
mtbadfish posted 12-31-2002 06:20 PM ET (US)   Profile for mtbadfish   Send Email to mtbadfish  
I am setting up a plan for rehabbing my trailer, it is galvanized. I have researched prices (new) and have decided all things being equal, I like the trailer. It's sturdy as hell and I like the way the rig trailers, just don't like it's looks!

It doesn't have any telltale signs of pitting or the white crumbly stuff, but it is old (approx. 12 years) and could use a face lift.

From what I could find on the web. it looks like I could prime it with self etching primer and then paint. But I don't have any practical experience with this, so I was hoping there would be some ideas on the process and feasibility.

Thanks,
Badfish

63WHALER posted 12-31-2002 07:06 PM ET (US)     Profile for 63WHALER    
Pettit makes a paint for this application, I believe its called trailer coat. The paint is for galvanized and also stainless steels and requires no priming. I've tried this product and had excellent results, paint is durable and seals excellent. I used 2quarts to spray a trailer for a 17' boat. Paint is silver/gray in color and can be left alone or oversrayed with a different color if wanted, I left alone and looks close to original galvanized appereance.

I think West Marine carries it, I picked mine up locally at Boaters World, cheaper and you dont have to pay extra for hazardous material shipping.

Hope this helps and good luck

,63

triblet posted 12-31-2002 07:37 PM ET (US)     Profile for triblet  Send Email to triblet     
I wouldn't paint it. It then becomes a
painted, not galvanized, trailer, and looses
a lot of its value. And the paint doesn't
make it any better.

Any little rust will pop through. Painted
trailer with a little rust: will be a hunk a
junk in a couple years. Galvanized trailer
with a little rust: no problem.

Again, you will now have a painted trailer.


Chuck

63WHALER posted 12-31-2002 08:29 PM ET (US)     Profile for 63WHALER    
Once corrosion and rust starts in something should be done to retard any further deterioration. One could do "spot" treatments on such areas with cold galvanize spray or as I oppted to use a high quality moisture sensitve urethane anti-rust treatment coating. Trailer was coated approx. 3yrs. and still looks fresh without any rust or show through. I think doing so added to value or at least pro-longed the longevity of the trailer, still very structurally sound, maybe not if I let the oxidation process continue.

I think a possibility could have the trailer re-dipped. This may be too costly compared to replacement cost?

Just my .02

Kevin

bsmotril posted 01-01-2003 05:56 PM ET (US)     Profile for bsmotril  Send Email to bsmotril     
Go to google and do a search on "painting +Galvanized" and you'll get a bunch of hits. The ones that count are the paint and coating manufacturers' pages that tell about proper surface prep. This is especially critical if the galvanizing is not fresh out of the hot dip tank as zinc oxidizes very rapidly, and paint won't stick to zinc oxide. The specific instructions to follow will very depending on the coating/paint you ultimately choose. Here is a good link to start:
http://www.sunwallpaperandpaint.com/galvanized.htm

BillS

mtbadfish posted 01-01-2003 09:24 PM ET (US)     Profile for mtbadfish  Send Email to mtbadfish     
Thanks for the responses!

The only rust present is on the fenders and some of the bolts, which I plan to replace. No signs on the frame of the "white rust" I read about.

The trailer is a Calkins Magnum, and is really one tough bugger. The axles, hubs, brakes on all four, and brakelines are only 1 year old, so while it is old it is a trailer I know and trust. It probably isn't necessary to paint it, but if possible I'd like to give it a go.

Chuck, I appreciate your point about the impact to value, but here in Minnesota Calkins trailers seem to be few and far between and have no real name recognition. Given the age and all I'm afraid it's value is negligible. So I'm hoping to make this work.

Kevin, it's nice to have word of a successful case. Thanks for the tips, and from what I've heard Pettit makes excellent products.

Bill, thanks also for the tips and link, I took a look at it and given the trailer's age I doubt the original preventative coating is present, so it seems the prep is easier but still the critical factor. Then of course using the proper finishing products.

Badfish

mtbadfish posted 01-01-2003 09:29 PM ET (US)     Profile for mtbadfish  Send Email to mtbadfish     
Oh how strange it is what owning a Whaler will do to a guy. I'm actually looking forward to this project!

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