How to Use Polyurethane Paint

Painting a polyurethane finish or stain on a piece of wood or furniture will give it a finished shine with a layer of protection. Following a few basic steps for applying a polyurethane finish to a prepared piece of wood or furniture on your own can give you beautiful results without spending a lot of time and money.

Things You'll Need

• Polyurethane
• Mineral spirits (if using oil-based polyurethane)
• Polyester or nylon bristle brush (for water-based polyurethane)
• 0000 Steel wool

Instructions

1. Begin with a clean, dry piece of wood or furniture that has been sanded to a smooth finish.

2. Open the can of polyurethane and stir with a paint stirrer. Do not shake, as this will cause air bubbles.

3. Dip your brush into the can of polyurethane, about 1 inch deep. If you're using oil-based polyurethane, mix two parts polyurethane with one part mineral spirits for the first coat only. Dip your brush into the mixture.

4. Starting in the middle of your project, and brush a thin coat with long, even strokes from side the side. Go in the direction of the grain, keeping your wrist straight.

5. Allow it to dry for 2 to 6 hours, depending on whether you are using a water-based or an oil-based polyurethane. Once dry, rub it with a 0000 steel wool pad to smooth any air bubbles. Repeat two more times for a water-based polyurethane or once for an oil-based polyurethane.

6. Remove any residue from the steel wool with a damp cloth.

7. Clean up with mineral spirits or paint thinner for oil-based polyurethane. Clean up with water for a water-based polyurethane.

Tips & Warnings

• Your brushstrokes should overlap. The surface should be completely dry before sanding.

• Only use polyurethane in a well-ventilated area.