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Concrete alfresco floor paint

This is my first painting job it’s my alfresco floor need to repaint. I chipped lose paint with wired brush and scrapper then put degreaser then wash with water gun. I need to ask that where I scrapped , do I need anything under the paint? And how to paint step by step please. Also when I wash with pressure gun some paint chipping when I brought close. Do I need to take whole paint off as Bunnings guy told me to put it over.

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Kermit

Hmmm. Really depends on how well the current paint is binding to the concrete whether to get it off or not. If its flaking off really easily then I would get rid of it all otherwise you risk the next coat just flaking off too.

What are you planning to use for the new coat @Goldy?

Any interest in epoxy? https://www.workshop.com.au/t5/Garage-and-Shed/Epoxy-garage-floor-project/m-p/11593

Goldy

https://www.workshop.bunnings.com.au/discussion/comment/5159#Comment_5159

Kermit

https://www.workshop.bunnings.com.au/discussion/comment/64723#Comment_64723

Thanks for that @Goldy, I think your answer is there on the can. If it is not sound, remove all paint. It's not going to be a fun job, but really the only way you can guarantee a strong bond to the surface and that you don't have to do all this again.

Goldy

https://www.workshop.bunnings.com.au/discussion/comment/95023#Comment_95023

But what about naked floor please I mean do I need something on before paint from where I already took off old paint.

Kermit

https://www.workshop.bunnings.com.au/discussion/comment/114013#Comment_114013

No worries @Goldy.

No primer needed - you'll just need multiple coats of the Ultra Pave. White Knight say to thin the first coat with 20% water for bare concrete. The water helps the paint to penetrate the concrete and adhere better. For the second coat they recommend adding grip additive for a safer non-slip surface to walk on.

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