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 Post subject: How to judge which kind of coat on the engineering floor ?
PostPosted: Fri Jun 25, 2021 2:00 am 
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Joined: Fri Jun 18, 2021 6:43 pm
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Hello guys ,I got a screen and recoat job ,How to judge whether the coat on the engineering floor is polyurethane or aluminum oxide? I know you can do screen on the water or oil base polyurethane ,but you are hardly screen out the aluminum oxide,so I don't want screen out the aluminum oxide,so can you recoat the aluminum oxide coat with polyurethane?


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 Post subject: Re: How to judge which kind of coat on the engineering floor ?
PostPosted: Fri Jun 25, 2021 11:43 pm 
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Aluminum oxide can be part of a poly-urethane coating and you won't see it. Whether there is aluminum oxide in the coating or not does not prevent a coat from sticking if the preparation is done correctly.
There are systems for re-coating any poly-urethane coating without any screening.Basic Coating has the Tykote system and Bona has a Bona prep system. Both start out with cleaning any deposits off the floor that may prevent good adhesion. Do you start your re-coat by cleaning the floor? Or do you think that screening will remove dirt and contaminants and allow good adhesion?
Water-based poly-urethanes stick very well to factory coats of poly-urethane.


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 Post subject: Re: How to judge which kind of coat on the engineering floor ?
PostPosted: Mon Aug 16, 2021 2:25 am 
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nbaabc1234 wrote:
Hello guys ,I got a screen and recoat job ,How to judge whether the coat on this engineering floor is polyurethane or aluminum oxide? I know you can do screen on the water or oil base polyurethane ,but you are hardly screen out the aluminum oxide,so I don't want screen out the aluminum oxide,so can you recoat the aluminum oxide coat with polyurethane?


The choice depends on the purpose of the room. Look at the requirements and instructions.


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