Help with bubbles

[8mpg]

Hopefully you guys can help me out with some advice. I just laid down some Rustoleum Rock Solid Metallic yesterday. Im not thrilled with the outcome for a couple reasons: bubbles and coverage. The coverage is partially my fault as Rustoleum does not want you to grind/etch the concrete but use their wash. I had to grind due to the texture of my concrete being a broom finish. The bubbles was a complete surprise.

I have TONS of bubbles. After reading, I believe its due to outgassing, something I didnt expect. They were all air filled bubbles, no water. I ran over all of them with a roller once dry and they are all popped. I believe I have two options... double down after a light sand or get over it. Im thinking I might be able to sand down the rings left behind with a light sandpaper to remove the high spots, then apply another coat. Im assuming the 2nd coat wont outgas because it will be over the first coat that has sealed the concrete. Is this a good idea?

Pics of the bubbles/coverage:

Coverage...you can see the concrete in some areas...

 

[LegacyIndustrial]

Sand, fill, recoat.


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[8mpg]

Would you put down a polyurea over it after a sand or do I need to get back down to concrete? Im thinking I should have gone with a polyurea to begin with. Im hoping that this could be used as a primer.

 

[LegacyIndustrial]

Yes you can sand the gloss off, wipe it down with denatured alcohol and go for it as long as it is epoxy.


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[8mpg]

thanks...sent you a PM on materials quote

 

[Shea]

Another cause of bubbles like that is from air entrapment from mixing. It's very important not to mix too fast or pump the paddle mixer up and down. Doing this can create air bubbles that get rolled onto the floor.

 

[8mpg]

Another cause of bubbles like that is from air entrapment from mixing. It's very important not to mix too fast or pump the paddle mixer up and down. Doing this can create air bubbles that get rolled onto the floor.

thanks for the advice...definitely something I wasnt thinking about.

 

[Theo911]

doesn't backrolling over the product pop the bubbles created while mixing?

 

[Shea]

doesn't backrolling over the product pop the bubbles created while mixing?

No, not always. Especially if they were entrapped while mixing.

 

[LegacyIndustrial]

doesn't backrolling over the product pop the bubbles created while mixing?

An air release roller will help with solids coatings and self levelers. It is tined, letting gases escape.