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04-03-2019, 09:20 PM
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#1
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Skoolie
Join Date: Jun 2015
Location: Cleburne, Texasa
Posts: 121
Year: 1999
Coachwork: Thomas MVP
Engine: Cat 3126B
Rated Cap: 20800
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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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04-03-2019, 09:21 PM
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#2
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Skoolie
Join Date: Jun 2015
Location: Cleburne, Texasa
Posts: 121
Year: 1999
Coachwork: Thomas MVP
Engine: Cat 3126B
Rated Cap: 20800
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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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04-03-2019, 11:25 PM
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#3
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Bus Crazy
Join Date: May 2010
Location: Farmington Hills, Mi (Detroit area)
Posts: 1,968
Year: 2000
Coachwork: Eldorado Aerotech 24'
Chassis: Ford E-450 Cutaway Bus
Engine: 7.3L Powerstroke
Rated Cap: 19
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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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04-04-2019, 12:14 AM
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#4
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Skoolie
Join Date: Jun 2015
Location: Cleburne, Texasa
Posts: 121
Year: 1999
Coachwork: Thomas MVP
Engine: Cat 3126B
Rated Cap: 20800
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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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04-04-2019, 01:46 AM
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#5
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Bus Geek
Join Date: Sep 2015
Posts: 3,856
Year: 2002
Coachwork: Thomas Built Bus
Chassis: Freightliner FS65
Engine: Caterpillar 3126E Diesel
Rated Cap: 71 Passenger- 30,000 lbs.
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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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04-04-2019, 05:34 AM
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#6
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Bus Geek
Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 23,764
Year: 1999
Coachwork: Thomas
Chassis: Freighliner FS65
Engine: Cat 3126
Rated Cap: 15
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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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04-04-2019, 09:04 AM
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#7
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Skoolie
Join Date: Jun 2015
Location: Cleburne, Texasa
Posts: 121
Year: 1999
Coachwork: Thomas MVP
Engine: Cat 3126B
Rated Cap: 20800
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Quote:
Originally Posted by Native
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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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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04-04-2019, 09:08 AM
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#8
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Skoolie
Join Date: Jun 2015
Location: Cleburne, Texasa
Posts: 121
Year: 1999
Coachwork: Thomas MVP
Engine: Cat 3126B
Rated Cap: 20800
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Quote:
Originally Posted by EastCoastCB
What's going on? I've not seen it sticky before. How much did you put down?
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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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04-04-2019, 11:42 AM
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#9
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Bus Geek
Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 23,764
Year: 1999
Coachwork: Thomas
Chassis: Freighliner FS65
Engine: Cat 3126
Rated Cap: 15
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Quote:
Originally Posted by Dizzyman
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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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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04-04-2019, 12:26 PM
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#10
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Bus Geek
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 10,482
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
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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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04-04-2019, 12:55 PM
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#11
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Skoolie
Join Date: Jun 2015
Location: Cleburne, Texasa
Posts: 121
Year: 1999
Coachwork: Thomas MVP
Engine: Cat 3126B
Rated Cap: 20800
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It is dry in many places! For the floor what is the best type of paint for an undercoat? Website says latex, I was told by an ex-Coast Guard friend that they always followed Ospho with an acrylic undercoat. Does it matter that much?
I plan on plugging all of the holes with Bondo then applying the undercoat.
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04-04-2019, 01:17 PM
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#12
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Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,401
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
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I used Rustolium Rusty Metal Primer.
I will be following with Rustolium Enamel.
so far the primer on the floor is holding up to traffic very well.
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04-04-2019, 01:52 PM
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#13
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Skoolie
Join Date: Jun 2015
Location: Cleburne, Texasa
Posts: 121
Year: 1999
Coachwork: Thomas MVP
Engine: Cat 3126B
Rated Cap: 20800
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Quote:
Originally Posted by PNW_Steve
I used Rustolium Rusty Metal Primer.
I will be following with Rustolium Enamel.
so far the primer on the floor is holding up to traffic very well.
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Glad to hear that, I may give that enamel a shot.
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04-04-2019, 06:10 PM
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#14
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Bus Geek
Join Date: Sep 2015
Posts: 3,856
Year: 2002
Coachwork: Thomas Built Bus
Chassis: Freightliner FS65
Engine: Caterpillar 3126E Diesel
Rated Cap: 71 Passenger- 30,000 lbs.
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Quote:
Originally Posted by PNW_Steve
I used Rustolium Rusty Metal Primer.
I will be following with Rustolium Enamel.
so far the primer on the floor is holding up to traffic very well.
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Same here ... added ceramic beads to the paint layer.
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04-04-2019, 07:52 PM
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#15
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Bus Crazy
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 2,265
Year: 1975
Coachwork: Chevy
Chassis: 8 window
Engine: 454 LS7
Rated Cap: 24,500
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Quote:
Originally Posted by Native
Same here ... added ceramic beads to the paint layer.
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I painted the interior of a 4 story business block one time and part of the contract was to paint the 8' wide concrete stairs with sand added to the top coat as an anti slip - a couple of days later I was getting complaints from the cleaning staff that the sand was pulling strings out of the mops - I had to go back and run a pole sander over 8 flights of stairs to take the sharpness off of them, then paint all the stairs with a 4th coat of porch and floor enamel - $$$$
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04-04-2019, 09:30 PM
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#16
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Bus Geek
Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 23,764
Year: 1999
Coachwork: Thomas
Chassis: Freighliner FS65
Engine: Cat 3126
Rated Cap: 15
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Quote:
Originally Posted by Dizzyman
It is dry in many places! For the floor what is the best type of paint for an undercoat? Website says latex, I was told by an ex-Coast Guard friend that they always followed Ospho with an acrylic undercoat. Does it matter that much?
I plan on plugging all of the holes with Bondo then applying the undercoat.
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no latex. I'd use a cheap oil based enamel for floors.
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04-05-2019, 12:12 AM
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#17
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Bus Geek
Join Date: Sep 2015
Posts: 3,856
Year: 2002
Coachwork: Thomas Built Bus
Chassis: Freightliner FS65
Engine: Caterpillar 3126E Diesel
Rated Cap: 71 Passenger- 30,000 lbs.
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Quote:
Originally Posted by Sleddgracer
I painted the interior of a 4 story business block one time and part of the contract was to paint the 8' wide concrete stairs with sand added to the top coat as an anti slip - a couple of days later I was getting complaints from the cleaning staff that the sand was pulling strings out of the mops - I had to go back and run a pole sander over 8 flights of stairs to take the sharpness off of them, then paint all the stairs with a 4th coat of porch and floor enamel - $$$$
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Yeah, it does trap the dirt. However, it is all under the flooring so that really does not matter.
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04-06-2019, 11:18 AM
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#18
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Skoolie
Join Date: Jun 2015
Location: Cleburne, Texasa
Posts: 121
Year: 1999
Coachwork: Thomas MVP
Engine: Cat 3126B
Rated Cap: 20800
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Quote:
Originally Posted by Sleddgracer
I painted the interior of a 4 story business block one time and part of the contract was to paint the 8' wide concrete stairs with sand added to the top coat as an anti slip - a couple of days later I was getting complaints from the cleaning staff that the sand was pulling strings out of the mops - I had to go back and run a pole sander over 8 flights of stairs to take the sharpness off of them, then paint all the stairs with a 4th coat of porch and floor enamel - $$$$
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OUCH! Makes my back hurt just reading it!
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04-06-2019, 11:26 AM
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#19
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Bus Crazy
Join Date: Nov 2018
Location: south east BC, close to the Canadian/US border
Posts: 2,265
Year: 1975
Coachwork: Chevy
Chassis: 8 window
Engine: 454 LS7
Rated Cap: 24,500
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Quote:
Originally Posted by Native
Same here ... added ceramic beads to the paint layer.
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Quote:
Originally Posted by Dizzyman
OUCH! Makes my back hurt just reading it!
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lol - decent money can be made while painting, or at least enough to feed my large family - while it can reward the creative needs a person may have, it can also be a body destroying occupation
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04-11-2019, 01:05 PM
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#20
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Skoolie
Join Date: Jun 2015
Location: Cleburne, Texasa
Posts: 121
Year: 1999
Coachwork: Thomas MVP
Engine: Cat 3126B
Rated Cap: 20800
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It finally dried
It took 3 days but the Ospho did dry, albeit with a couple of rough spots where bubbles had been. I brushed and wiped the white powder areas. Swept and vacuumed the entire floor then applied Rustoleum oil based white professional High Performance enamel metal primer. 36 hrs later it was dry so we top coated that with white Rustoleum oil based Professional High Performance Protective enamel. Looks good, fingers crossed!
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