How to Properly Store and Care for Leftover Paint

When it comes to leftover paint, proper storage is essential to ensure it remains usable for future projects. Paint can last for a significant amount of time if stored correctly, saving both money and time when you need to touch up areas in your home. To make sure your leftover paint stays in top condition, here are some key guidelines on where and how to store it, how long it lasts, and how to tell when it’s no longer usable.

1. Where Should You Store Leftover Paint?

When storing leftover paint, the location plays a crucial role in its preservation. Paint should be kept in a dry area, away from direct sunlight. Exposure to sunlight can cause the paint to degrade, affecting its quality and making it less effective for future use. It’s also important to store paint in a place that is out of reach of children, ensuring that safety is a priority. Depending on where you live it may be best to invest in a storage unit, an example being Miles of storage. Furthermore, you should avoid storing paint near food or drink, as spills or leaks could cause contamination.

For the storage container, most leftover latex paints, such as AURA®, REGAL®, and ben®, should be kept in either a lined metal can, a glass jar, or a plastic container. The metal can should be lined to prevent rusting, which can compromise the paint inside. If you’re not using the original paint can, choose a container that is close to the size of the remaining paint to minimize air exposure, which can cause the paint to dry out and become unusable faster.

2. Ideal Temperature for Storing Paint

Temperature plays a key role in preserving the quality of paint. The optimal temperature for paint storage is between 60°F and 80°F (15°C to 27°C). This temperature range helps maintain the paint’s consistency and prevents it from deteriorating. If you live in a climate where temperatures fluctuate significantly, especially in the winter, you should be cautious about storing paint in your garage, as extreme cold can cause the paint to freeze, ruining its texture and usability. In hot climates, excessive heat can also lead to the paint breaking down, so it’s essential to store it in a stable environment.

3. Resealing a Paint Can Properly

Properly resealing the paint can is crucial for maintaining its quality. Always replace the lid as soon as possible after use. Before sealing the can, clean both the rim of the can and the edge of the lid to remove any paint residue. This ensures a better seal and prevents air from getting inside. For an even more secure, airtight seal, place a layer of plastic wrap over the opening before putting the lid back on. Once the lid is in place, use a rubber mallet to gently tap around the edges of the can, ensuring the lid is firmly sealed and that no paint can escape.

4. How Long Does Opened Paint Last?

Paint that has been opened typically lasts for about two years, provided it’s stored correctly. However, several factors can influence the shelf life of paint, including temperature fluctuations and environmental conditions. To determine whether your paint is still good to use, it’s helpful to check the product’s Technical Data Sheet for specific guidelines on storage temperatures and shelf life. Paint that has been exposed to extremes, whether heat or cold, may degrade faster, so it’s important to store it in a stable, appropriate environment.

5. Storing Paint During a Project

If you are in the middle of a painting project and need to take a break for a few days or even a week, you don’t need to dispose of the leftover paint immediately. You can store it for a short period as long as you reseal the can properly and keep it in a temperate environment. Avoid placing it in direct sunlight or near extreme temperatures, as this can cause the paint to spoil or dry out. When you resume your project, check the paint for any changes in consistency or odor before using it.

6. How to Tell If Paint Is No Longer Usable

There are several indicators that will tell you if your paint has gone bad and is no longer suitable for use. The first and most noticeable sign is the smell. Paint that is past its prime will often have a sour or strong odor, which is a clear indication that it has gone bad. Another key sign is the consistency of the paint. If, after stirring, you notice any chunks or a jelly-like texture, the paint is no longer usable. It should always have a smooth, even consistency when stirred.

If your paint is still within the two-year window and has been stored correctly, it’s likely still good to use, as long as there is no unpleasant odor or unusual texture. If you notice any of these signs of spoilage, it’s better to dispose of the paint safely rather than risk using it on your project.

Conclusion

Properly storing and caring for leftover paint is an easy way to save money and reduce waste. By keeping your paint in a dry, cool environment, resealing the container securely, and checking the paint’s condition before reuse, you can extend its shelf life and make the most out of your investment. If you need further assistance, local paint retailers like Benjamin Moore® offer valuable advice and resources to help with all your painting needs, from storage tips to product recommendations.