Another rust question

Maybe Rust-Oleum Rust Reformer. I used to have some around. Probably not applicable in your area but try not to let it freeze...

Seemed to help some when I was doing body work on vehicles for areas I couldn't prep mechanically well...

Long ago I remember a priming paint sold for use on rusted steel surfaces without cleaning beyond removing loose rust.

Physically it resembled white glue, but when coated on rusty surfaces the rust turned black and became paintable. It was nowhere near as good as abrading to clean metal, but helped some. I believe the product was a latex paint with phosphoric acid, but don't have any firm evidence, nor evidence the idea makes sense.

I can't remember the name and now find nothing that matches the description on line, so far as I've looked.

There's a stretch of gutter on my roof that has pinholed rust. It would be nice if I could try such a primer on the interior surface of the gutter to extend its life by a couple of years.

If this tale jogs any memories please write.

Thanks for reading,

bob prohaska

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P O R Rust Converter. When it came out I called to ask if it was suitable for car body rust and they said no, possibly because UV degrades it.

I'm taking a break from grinding out body rust spots on the 91 Ranger with a

My gutters are plastic with shop-made hangers of 1/8" aluminum flat stock that doesn't go over the top, thus I can clean them from the ground with a gutter cleaning scoop on a pool cleaning extension pole.

Extend maybe.

Maybe Rust-Oleum Rust Reformer. I used to have some around. Probably not applicable in your area but try not to let it freeze...

Seemed to help some when I was doing body work on vehicles for areas I couldn't prep mechanically well...

-------------------------------------- I've had good results doing that on punctures in corrugated galvy roofing. The corrugated patches cut from destroyed panels are pop riveted on the ridge tops.

Dupli-Color makes a product called Rust Fix , product RF129 in a spray can . It calls for a coat of paint or other primer over the rust fix . Worked for me on the inside of a post hole auger gear box . Got mine a O'Reilly Auto Parts .

I think the stuff that turns black is based on tannic acid and converts the surface rust into iron tannate.

The description of RO Rust Reformer matches my memory of how the original material behaved. None of the brand names folks have mentioned ring any bells with me, so perhaps the product lived on after the original supplier, under many labels.

I was doing the same thing...

Roofing cement is an interesting idea. I have quite a lot, and never thought of using it. Looking again at the gutter it appears to be badly pinholed over a span of about two feet. I was going to wire brush it, but will wait till examining the inside; a wire brush might completely destroy it....

Thanks to everyone for replying!

bob prohaska