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Old 04-03-2019, 09:20 PM   #1
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Potential Ospho problem

Yesterday I put Ospho on the prepped floor of our bus using a brush on the chair rail and along the edges of the floor and a short knap roller for the rest. I have never applied anything before that was water thin but applied it as lightly as possible. This morning on my way to work I stuck my head in the bus (it had been about 20 hours since application) and observed a few black spots (good) a number of areas that appeared to be covered with tiny bubbles on top (NOT good?) and when I touched the floor it was sticky still (BAD?) Since I worked today it will be right at 48 hrs of drying time before I check it again. If it is still sticky, what do I do? What do I do with the areas with the small bubbles on top?

Silly me, I had thought I finally reached one part that would be quick and easy!
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Old 04-03-2019, 09:21 PM   #2
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I checked the Ospho website and found nothing for either problem. I'm sure I'm not the first to experience it though!
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Old 04-03-2019, 11:25 PM   #3
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Here's a response I found from Ospho about a similar problem:


"The Ospho is trying to get through the paint to treat the surface and it
will break down the paint and could cause a greasy or tacky surface. If that
happens you will have to wipe it down with mineral spirits or paint thinner
that will help remove that surface and let it dry for you."
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Old 04-04-2019, 12:14 AM   #4
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Oh boy, I hope I don't have to do that! It went down on bare steel!
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Old 04-04-2019, 01:46 AM   #5
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The sticky stuff will eventually dry out ... it takes a long time and it leaves thicker areas of residue much like a paint run. It is easiest to wipe it off while it is still tacky with a very damp cloth then a dry cloth. You may need to work larger areas with a wire bruch or even a wire brush wheel on an angle grinder once it is dried. The real key is to apply it in a very light coat (originally) with a spray bottle. Sorry you have to go through the extra prep on your machine.


I see you are in Cleburne ... Hurst here.
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Old 04-04-2019, 05:34 AM   #6
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What's going on? I've not seen it sticky before. How much did you put down?
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Old 04-04-2019, 09:04 AM   #7
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Quote:
Originally Posted by Native View Post
The sticky stuff will eventually dry out ... it takes a long time and it leaves thicker areas of residue much like a paint run. It is easiest to wipe it off while it is still tacky with a very damp cloth then a dry cloth. You may need to work larger areas with a wire bruch or even a wire brush wheel on an angle grinder once it is dried. The real key is to apply it in a very light coat (originally) with a spray bottle. Sorry you have to go through the extra prep on your machine.


I see you are in Cleburne ... Hurst here.
I may give it a couple more days then. If I still have some sticky patches I'll do the wet/dry thing. That won't take off the entire depth back to the bare metal will it?
Hurst - in Texas terms you are practically next door!
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Old 04-04-2019, 09:08 AM   #8
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Originally Posted by EastCoastCB View Post
What's going on? I've not seen it sticky before. How much did you put down?
On the main part of the floor I used the shortest knap paint roller I could find and squeezed out as much Ospho in the pan as I could before rolling. Used a brush lightly for the edges.
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Old 04-04-2019, 11:42 AM   #9
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Originally Posted by Dizzyman View Post
On the main part of the floor I used the shortest knap paint roller I could find and squeezed out as much Ospho in the pan as I could before rolling. Used a brush lightly for the edges.
Its like water, so I just mop it around if its a large area.
Spray bottles for hard to reach areas.

Maybe leave it to dry for a day or so and see what happens.
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Old 04-04-2019, 12:26 PM   #10
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The converter I use says to wash it off after 15 minutes.

FOR RUSTED SURFACES (To Remove Rust)
1. Remove any oil, grease, & dirt from surface. Remove loose rust with a wire brush.
2. Apply product to affected metal full strength with a paintbrush, spray bottle or pump-up sprayer. Work the solution into rusted areas with a stiff bristle brush and allow product to dry overnight to fully neutralize rust.
3. Rinse or wipe surface with a damp cloth to remove any rust residue.
4. Paint treated surface within 48 hours of application to prevent formation of new rust. Two applications may be necessary to treat severe rust.

FOR TREATING METAL FOR PAINTING (Phosphotizing)
1. Remove any oil, grease, & dirt from surface.
2. Dilute 1 part product with 3 parts water in a plastic container.
3. Apply product with a paintbrush, spray bottle or pump-up sprayer to metal. Surface may turn gray/white.
4. Thoroughly rinse with water after 15-30 minutes.
5. Wipe off any loose powder that forms. Paint treated surface within 48 hours of application to prevent formation of new rust.
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