The process to whiten yellow paint involves preparing the surface and applying a fresh coat of paint. Here's how:
Understanding the Yellowing Issue
Yellowing paint can stem from several causes, including:
- Moisture: Humid conditions can cause yellowing, particularly on gypsum surfaces.
- Nicotine or Smoke: Exposure to smoke can lead to discoloration.
- Age: Over time, some paint pigments may fade or yellow.
- Mildew: Blackening joints indicate a mildew problem, which can exacerbate yellowing.
Steps to Whiten Yellow Paint
Here's how to tackle the issue:
1. Prepare the Surface
- Cleaning: Start by cleaning the surface thoroughly to remove any dirt, dust, or grime.
- Addressing Mildew: If you spot blackening joints, this indicates mildew. You'll need to reapply a joint compound before repainting.
- Humidity Control: If the yellowing is due to humidity, heat up the area to allow the moisture to dissipate, this can help to correct the yellowing.
2. Apply Primer
- GoPrime 200-135: According to the reference, apply a coat of primer, specifically GoPrime 200-135. This will provide a good base for the new paint and help to block any existing stains from bleeding through.
3. Apply the Finishing Product (White Paint)
- Choosing the Right Paint: Select a high-quality white paint that suits your needs and the type of surface you are painting.
- Application: Apply the white paint evenly, following the manufacturer's instructions. You may need to apply two coats for complete coverage.
Detailed Breakdown in a Table
| Step | Action | Notes |
|---|---|---|
| 1. Prepare | Clean the surface. Address any mildew. Control humidity. | Remove any debris and mildew by using a cleaning solution. If due to humidity, heat the room. |
| 2. Prime | Apply a coat of GoPrime 200-135 primer. | This ensures a good bond for the topcoat and helps block old stains. |
| 3. Paint | Apply a finishing coat of white paint. | Apply an even coat, and follow the manufacturer's instructions. May require more than one coat for the best results. |
Summary
To whiten yellow paint, you need to clean the surface, address any mildew issues, apply a coat of primer such as GoPrime 200-135, and then apply your white paint. For humid gypsum, ensure to heat the space to remove the moisture.
