Yes, you can add water to wall paint, but only in small amounts. Adding too much water significantly reduces the paint's quality and durability.
How Much Water Should You Add?
The amount of water to add depends on the paint type and the desired outcome. For thinning paint to improve its application, a small amount is sufficient. A good guideline is 2-4 cups of water for every five gallons of paint. This improves workability without significantly compromising the paint's quality. In contrast, adding large quantities of water, such as two gallons of water per five gallons of paint, drastically dilutes the paint, reducing its coverage, adhesion, and overall durability. Manufacturers sometimes provide specific recommendations on their paint containers, such as Behr's Ultra Scuff Defense interior paint suggesting 1/2 pint of water per gallon for sprayer application. Always test the diluted paint on a small, inconspicuous area before applying it to the entire wall.
Risks of Adding Too Much Water
Adding excessive water to your paint can lead to several undesirable outcomes:
- Reduced Coverage: More coats will be required, increasing your time and paint consumption.
- Poor Adhesion: The paint might peel or chip more easily.
- Weakened Durability: The paint's finish will be less resistant to scratches and wear.
- Uneven Finish: The final coat may look patchy or inconsistent.
When to Add Water to Paint
Adding a small amount of water can be beneficial in specific circumstances:
- Improving Sprayability: For spray painting, thinning the paint can help create a smoother, more even finish.
- Easier Application with a Roller or Brush: Adding a bit of water can improve the flow and application, especially with thicker paints.
Alternatives to Adding Water
If you're struggling with thick paint, consider using a paint extender instead of adding water. These products are designed to adjust the viscosity of the paint without compromising its quality.
