Yes, you can use separated paint, but it requires proper preparation and mixing.
Here's a breakdown of how to handle separated paint:
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The Issue: Paint separation is a common occurrence, especially with paints that have been stored for a while. The binder and pigment separate, resulting in a watery or oily layer on top and a thicker, often hardened, layer at the bottom.
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The Solution: Thorough Mixing
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Tools: Use a sturdy stir stick or a paint mixing drill attachment.
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Process: Vigorously stir the paint until the separated components are completely re-integrated. This may take several minutes of consistent stirring. Scrape the bottom and sides of the can to ensure all settled pigment is incorporated.
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Dealing with Thick or Clumpy Paint
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If the paint remains too thick after stirring, you can add a small amount of the appropriate thinner for the type of paint (water for latex, mineral spirits for oil-based).
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Important: Add thinner gradually and stir well after each addition to avoid over-thinning. Consult the paint manufacturer's recommendations for the correct type and amount of thinner.
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When to Discard Separated Paint:
- If the paint has hardened significantly or contains large clumps that cannot be broken down with stirring, it's likely unusable.
- If the paint smells foul or has a moldy appearance, it is likely contaminated and should be disposed of properly.
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Preventing Separation:
- Store paint in a cool, dry place, tightly sealed.
- When storing partially used cans, consider inverting them for a short period (after sealing tightly) to help prevent a skin from forming on the surface. This is a debated practice, but some find it helpful. Always return the can to the upright position for long-term storage.
In summary, separated paint can often be salvaged with thorough mixing. However, if the paint is heavily solidified, contaminated, or fails to properly remix, it's best to discard it.
