You’ve finished your project, and now you have some leftover paint. Can you safely store it in the garage without ruining it?
Unfortunately, storing paint in the garage — especially if it’s not climate-controlled — is not a good idea. Extreme temperatures during winter or summer can break down the paint’s chemical bonds, rendering it unusable. A better option is to store it in a basement or another temperature-controlled area in your house.
This article will dive deeper into the topic, explaining the best ways and places to store paint. It will also cover how to properly dispose of paint that has been compromised, such as when it’s accidentally left in the garage during freezing conditions. Let’s get started.
Storing Paint in an Unheated Garage
You cannot store paint in an unheated garage. In fact, it’s better not to keep paint in any area prone to extremely hot or cold temperatures, including outdoors. Such conditions can chemically alter the paint, making it difficult — or even impossible — to use.
If exposed to near-freezing temperatures, the paint can solidify and become unusable. Similarly, scorching environments can break down the solvents in the can, affecting the paint’s consistency and its ability to adhere to surfaces properly. Even if the paint appears usable, its performance may be compromised, leading to issues like uneven coverage or peeling.
While these problems typically develop over extended periods, it’s still best to avoid any risk by storing paint in dry, climate-controlled spaces like basements or utility rooms. These environments provide a stable temperature and humidity level, ensuring the paint remains in good condition until you need it again. Additionally, keep paint cans sealed tightly and stored upright to prevent leaks and contamination.
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How Long Can You Keep Paint in the Garage?
Keeping paint in the garage, especially an unheated or uninsulated one, is not ideal for long-term storage. While you may be able to store paint in the garage for short periods, it’s crucial to be aware that extreme temperature fluctuations can quickly degrade the quality of the paint, even if it appears fine at first glance.
If left in the garage for an extended period, paint can suffer from separation, thickening, or the breakdown of its chemical structure. For example, if the paint is exposed to freezing temperatures, it may solidify, rendering it unusable. On the other hand, if the temperature in the garage gets too hot, the paint’s consistency can change, and its ability to properly adhere to surfaces can be compromised.
Typically, if paint is stored in a stable, climate-controlled environment, it can last for several years. However, in a garage where temperatures swing drastically with the seasons, it’s best to use the paint within a year or two to ensure optimal performance. To avoid spoilage, consider moving the paint to a more temperature-controlled location, like a basement or utility room, for longer storage periods.
The Best Ways to Conserve Paint
Preserving paint is all about preventing it from drying out. The key is limiting its exposure to air and light, which can cause it to degrade over time.
Use Proper Can Openers
The lid of the paint can plays a crucial role in maintaining paint freshness. Always avoid opening the can with a screwdriver or any tool that could damage the lid’s lip or warp the can’s rim. Such damage will prevent the lid from sealing properly and keeping air out. For best results, use a proper paint can opener, which can be found at most paint stores along with stirring sticks.
Keep It Sealed
For an extra layer of protection, place a clean sheet of plastic wrap over the open can before closing the lid. This plastic barrier helps enhance the seal and protects the paint most exposed to air. Additionally, keep plastic wrap handy to cover open cans in use, protecting the paint from dust and debris.
Don’t Use a Hammer to Seal the Can
While it’s important to secure the lid tightly, avoid using a hammer to force it shut. Instead, tap the lid gently with a piece of wood to ensure a snug fit. If you notice your paint can running low, consider decanting the remaining paint into a smaller quart or pint-sized can. This reduces the amount of air exposure and helps preserve the paint for a longer period.
How Do You Know When the Paint in the Garage Is Bad?
Over time, paint can go bad if it’s not stored properly, especially in a garage where temperatures can fluctuate dramatically. Here’s how to tell when your paint has gone bad:
- Separation of components: One of the first signs that paint has gone bad is the separation of its components. If the liquid portion has separated from the solid pigment and mixing it doesn’t bring it back to its original consistency, the paint may no longer be usable.
- Clumpy or lumpy texture: If the paint has developed clumps or lumps, it may have dried out or been exposed to unfavorable conditions. This could mean it has become too thick and unusable, even after stirring.
- Unpleasant odor: Fresh paint has a distinct, chemical smell. If your paint has developed a rancid or sour smell, it’s a clear indication that the paint has gone bad, typically due to improper storage conditions.
- Paint won’t mix: If you find that no matter how much you stir, the paint doesn’t mix well or appears chunky, it is likely spoiled and may not go on the surface smoothly.
- Rust on the can: If the metal can has started to rust, moisture has likely gotten inside, which can ruin the paint. Rust can also cause the paint to become contaminated or ineffective.
- Thick or dry surface skin: If you notice a thick, dry skin on top of the paint or if it’s hard to remove, the paint may have dried out too much to be usable, especially if the skin isn’t easy to mix back in.
If any of these signs appear, it’s time to dispose of the paint and buy new paint for your next project.
Getting Rid of Unusable Paint
Before disposing of any paint, always check local laws regarding proper disposal.
First, ensure you know what type of paint you’re dealing with. Different paints have different disposal requirements. If you’re dealing with latex-based paint, you can often dry it out, but oil-based paints require special handling as they can release harmful fumes.
For paints that won’t solidify simply by leaving the can open, it’s a good idea to mix them with cat litter or shredded paper. This will help the paint dry faster and make it easier to dispose of.
Once the paint has hardened, you can place the dried mass into a dry cardboard box and throw it away with your regular garbage, provided local regulations permit it.
Conclusion
If you follow this advice about keeping your paint in a climate-controlled environment, you’ll be able to keep your paint fresh for many years to come. You don’t want to keep your paint in the garage, especially if you live in an area that experiences extreme temperatures.
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