How to Paint on Top of Oil-Based Paint?

To paint over oil-based paint, you need to apply a bonding primer first. This ensures the new paint adheres properly.

Steps to Paint Over Oil-Based Paint

Here's a detailed breakdown of the process:

1. Preparation: Clean the surface you intend to paint to remove any dirt, grease, or grime.
2. Apply Bonding Primer: Use one to two coats of bonding primer over the oil-based paint.
   • First Coat: Apply a coat of bonding primer.
   • Second Coat (Optional): If you can still see the old paint, particularly in areas with knots (like on knotty wood kitchen cabinets), apply a second coat of bonding primer. This ensures a complete seal.
3. Drying Time: Allow the bonding primer to dry completely according to the manufacturer's instructions.
4. Painting: Once the primer is dry, you can now apply your desired paint finish.

Why Use Bonding Primer?

Oil-based paints create a smooth, non-porous surface that other paints often struggle to adhere to. A bonding primer acts as an intermediary, creating a surface that your new paint will stick to, preventing peeling or chipping.

When to Use Two Coats of Primer

You will likely need a second coat if:

• You're painting over dark colors.
• The surface has knots or uneven textures (like knotty wood kitchen cabinets).
• The first coat of primer does not fully cover the old paint.

Summary

Step	Action
1. Preparation	Clean the surface.
2. Primer	Apply 1-2 coats of bonding primer.
3. Dry Time	Wait for primer to dry completely.
4. Painting	Apply your desired paint.

By using a bonding primer as an initial step, you can effectively paint over oil-based paint. This method ensures long-lasting adhesion and a beautiful finish.