Ospho OSPHOG; Ospho Metal Treatment Gallon Made by Ospho
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15,798 reviews
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50+ products
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Care Corrosion & Rust Inhibitors
Experiential insights by users
About Ospho OSPHOG; Ospho Metal Treatment Gallon Made by Ospho
Overall Feedback:
88% positive
80% liked its quick drying time, but 20% found it took too long
I spray the product and let it dry for at least 24 hours before using rust oleum rusty metal primer and then rust oleum paint.
I observed bubbles of rust peeking through everywhere after 12 hours, indicating insufficient drying time of the rust-inhibitor.
The product did not dry properly, resulting in a chalky white surface that could not be removed with pressure wash and had to be brushed before painting.
92% found it easy to apply, while 8% had difficulty with the process
I like the fact that it does not need to be washed off.
Once I apply the product, it ensures that my trailers, vehicles, toys, etc. will last for a very long time.
I faced difficulty in removing the rust inhibitor from the surface, which required brushing before painting.
88% praised the excellent protective coating and ability to prevent rust
After painting directly over the product, I noticed no rust coming through even after two years.
I found the product effective in stopping rust and preventing it from spreading.
I have noticed that there are some reviews stating that it does not work completely, but in my experience, it works great with a few caveats.
Unlike some other products I've tried, the rust goes away and doesn't start growing again a month later.
77% appreciated its long-lasting protection
After several months of using the product, I had no issues with the areas that were painted over.
I have used the product on anchor brackets for over twenty years and they are still fine even after constant exposure to the elements.
79% liked its deep surface penetration, but 21% found it struggled with rough surfaces
Any oil or coating on the surface can prevent the rust-inhibitor from getting to the rust.
If we let it sit for 2-3 days within ideal temperature settings, sand, wash with degreaser, and apply rustoleum primer and/or paint, it will stay on very well.
About half of the metal surfaces turned chalky white and we had to brush it before painting as pressure wash didn't work.
75% praised the excellent surface finish, while 25% noticed a sticky residue
After using the product for 7 months, the rust is bleeding through the paint job.
