Mixing medium for mica powder


  #1  
Old 01-20-23, 03:22 PM
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Mixing medium for mica powder

I'm going to paint my brick fireplace. It's decorative only, no longer in use. I really wanted to find a paint that was a warm off-white with a pearl/metallic look but I just couldn't find anything that was the shade I wanted.

I bought a latex paint in the color I want and also bought some pearl metallic mica powder. I understand mica powder doesn't mix well with latex paint because the paint will overpower the metallics in the mica.
I contacted the manufacturer, and they told me to first prime and paint the brick, and then mix the mica powder into a clear topcoat or a glaze.

I thought I could mix the powder into a poly but reddit says is not a good carrier of pearls. The long dry time means any sagging or thin areas show up like ripples with white powder and if you go over it too much it gets cloudy. I've searched for a clear latex paint without much luck. Rust-oleum makes one but it's a gloss finish and I'm looking for more of a satin.

Does anyone have any ideas how I can make this work? Is there another clear medium that I can use instead of polycrylic? Glaze was mentioned but I'm not familiar with glazing and don't know if that would affect the way the finished brick looks.
 
  #2  
Old 01-20-23, 06:09 PM
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Shellac might work; if applied thinly it dries really fast. But even superblonde shellac has a slight amber cast that might not give you the results you want. And the smell (it uses alcohol as its solvent) is very strong until it is completely cured.
If you have a good artists supply store nearby, you might have better luck finding something there...Gesso comes to mind, but it's white.
 
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  #3  
Old 01-20-23, 10:47 PM
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Definitely don't want yellowing over a white pearl paint. What's gesso? I've never heard of it? You're probably right about going to an artist's store. They can probably point me in the right direction.
 
  #4  
Old 01-21-23, 09:11 AM
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Gesso is a kind of primer that artists apply to canvas before they apply paint. I see that it is available in clear, so it might work for you, but there are lots of different types and brands so an art store might be your best bet for advice.
 
 

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