Physically it resembled white glue, but when coated on rusty<sniP.
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.
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
Physically it resembled white glue, but when coated on rusty<sniP.
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.
On 10/26/2025 10:36 AM, bp@www.zefox.net wrote:
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
Extend maybe.
BP wrote in message news:10dlm7r$5f5t$1@dont-email.me...
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
---------------------------------
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 2" abrasive fiber pad on an HF air angle grinder, among my
favorite power tools. It might not be as satisfactory with a smaller compressor, mine is 3+ HP, 80 gallons, a mixed breed salvage project.
A swivel coupler on the tool's air input improves its maneuverability. Rustoleum primer + paint has held up well for me on outdoor projects,
but I prefer SEM products on vehicles.
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.
On Sun, 26 Oct 2025 17:36:59 -0000 (UTC)
bp@www.zefox.net wrote:
Physically it resembled white glue, but when coated on rusty<sniP.
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.
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...
https://www.amazon.com/Rust-Oleum-7830730-7830-730-Rust-Reformer/dp/B000BZZ56S/
I usually brush off gutter areas like that on the inside and
smear Roof Cement on them. Really bad spots will get a bit of roof
cement and I'll also press a sheet metal patch or similar down on top
of it while it's still gooey...
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