Painting over washable paint requires proper preparation to ensure a smooth, long-lasting finish. Here's how to do it:
Preparation is Key
Before applying any new paint, the existing washable paint needs preparation. This involves:
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Sanding: Thoroughly sand the existing washable paint to create a better surface for the new paint to adhere to. This step is crucial, as mentioned in multiple sources. [Source 1, Source 6]
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Undercoat (Primer): After sanding, apply a wall undercoat or primer. This helps to seal the surface and provides a better base for the topcoat. [Source 1] The primer ensures good adhesion and prevents the old color from bleeding through the new paint. [Source 2] Choosing a primer appropriate for the existing surface is essential for a strong bond. [Source 2]
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Topcoat: Once the undercoat is dry, apply your chosen topcoat paint. Let it dry completely and assess the finish. If necessary, add another coat of undercoat before reapplying the topcoat for improved results. [Source 1]
Understanding Washable Paint
Washable paints contain detergents that make them water-soluble and easy to clean. This characteristic, while beneficial for cleanup, can sometimes present challenges when repainting. Because of the water-soluble property, the paint may bleed or dissolve if exposed to too much moisture. [Source 4] It's therefore essential to ensure the existing paint is completely dry and sealed before painting over it. It is important to note that washable paint cannot be made wash-proof. [Source 8]
Additional Considerations
- Surface Condition: If the walls are in good condition, it's often safe to paint over existing paint. [Source 3] However, always assess the condition and take appropriate steps such as filling any imperfections before painting.
- Type of Washable Paint: The specific type of washable paint (e.g., matte, gloss) might slightly affect preparation; however, sanding and priming are generally recommended.
- Sealing: Sealing washable paint, particularly on surfaces like canvas, may be possible. You'll need an appropriate sealant designed for the material and paint type. [Source 5]
