After you’ve painted your home, you’ll most likely wind up with leftover paint. This isn’t a bad thing! You’ll be able to use that extra paint for touchups and other projects in the future. To ensure that you’re able to keep everything in good condition, you need to know how and where to store leftover paint.
Our Climate-Controlled Storage Unit Makes the Perfect Climate For Long-Term Paint Storage!
Why Proper Paint Storage Matters
After completing a home painting project, you’re often left with half-full cans. Don’t let this valuable resource go to waste! Keeping leftover paint is essential for future touch-ups and small projects. To ensure the paint remains usable for years, you need to know how and where to store leftover paint.
The environment where you store paint is the single most important factor. Paint must be kept away from extreme temperatures and excessive moisture. Properly storing your leftover paint will ensure you’ll be able to use it for years to come. CertaPro Painters of Ocala and the Villages recommend tightly sealing the paint so no air can get into the can.
Keep Your Leftover Paint Cans Organized
Besides figuring out where you’re going to store your leftover paint cans, you should come up with a way to organize them. This will save you from opening every single can of paint next time you need to use it.
If you only have a little bit of paint left, consider dividing it into smaller cans. Mason jars work great because they’re clear, so you can easily see the color, and you can tightly seal them.
Where to Store Leftover Paint
1. Temperature is Key
We recommend storing leftover paint in a cool, dry area. Ideal locations include your basement, a utility closet, or, for the best protection, a temperature-controlled storage unit.
The Best Storage Location: Climate Control
When paint is kept in an air-conditioned, climate-controlled room, it’s far less likely to freeze, coagulate, or spoil. Temperature-controlled units maintain a consistent environment, preventing the damaging effects of heat (which thickens paint) and cold (which causes separation and freezing).
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Safe Storage Setup
Elevate Cans: Always store paint cans on a shelf or elevated platform, not directly on the concrete floor. This prevents moisture from building up and causing the bottom of the can to rust.
Out of Sunlight: Direct sunlight can heat the can and dry out the paint prematurely.
Child Safety: Ensure all stored cans are out of reach of children and pets.
2. Preparing Different Paint Types for Long-Term Storage
The preparation method depends on the type of paint you are storing.
Latex (Water-Based) Paint Preparation
Latex paint is easier to clean up but is more sensitive to freezing.
- Ensure Tight Seal: Wipe any paint residue off the rim of the can.
- Use Plastic Wrap: Place a small sheet of plastic wrap directly over the opening of the can before replacing the lid.
- Seal It: Gently tap the lid down using a rubber mallet to create a tight, airtight seal. Avoid using a hammer, which can warp the metal.
Oil-Based Paint Preparation
Oil-based paint is heavier and requires extra care to prevent the formation of a skin on the surface.
- Add Solvent: Add a thin layer of the appropriate solvent (mineral spirits or paint thinner) over the surface of the paint inside the can. Do not stir it in; it acts as a protective layer.
- Secure the Lid: Follow the same sealing procedure as latex paint (plastic wrap and a rubber mallet).
- Invert the Can: Once fully sealed, carefully turn the can upside down for a minute. This allows the fresh layer of paint/solvent to seal the lid against the can rim, forming an even stronger airtight barrier.
3. Keeping Your Leftover Paint Cans Organized
Efficient labeling saves significant time and prevents the frustration of opening multiple cans to find the right color.
Here are the best organization methods:
- Transfer to Smaller, Clear Containers: If you only have a small amount (less than a quarter of a can), transfer the paint to smaller, airtight containers like Mason jars. Since the jars are clear, you can easily see the color, and the tighter seal is often better than a partially crushed paint can lid.
- Detailed Labeling: Use a permanent marker to write this information clearly on the lid:
– Color Name and Brand Name
– Room/Area Used (e.g., Kitchen Accent Wall)
– Date Stored - Apply a Swatch: For a quick visual reference, apply a small brushstroke of the actual paint onto the can or jar lid.
Frequently Asked Questions About Paint Storage
How long is leftover paint good for?
A: Unopened, high-quality latex paint can last up to 10 years when stored correctly in a cool, dark, and dry place. Once opened, it typically lasts 2 to 5 years, provided it has been properly sealed to prevent air exposure and contamination.
Can I store paint in my garage or shed?
A: Generally, no. Garages and sheds are non-climate-controlled environments that experience extreme temperature fluctuations. Heat can cause paint to spoil, and freezing will irreversibly ruin water-based (latex) paint by breaking down its emulsion. If you must use a garage, store the paint on an interior wall shelf, away from the door.
How do I know if my leftover paint has gone bad?
A: Look for these three signs:
- Mold or Mildew: Any fuzzy or dark growth means the paint is spoiled.
- Bad Odor: Spoiled latex paint often smells strongly of mold or a sour, pungent aroma, even after stirring.
- Failure to Remix: If, after thorough stirring, the pigment and solvent layers do not fully recombine into a smooth, usable consistency, the paint is likely ruined.
Don’t let your extra paint go to waste! Use these tips on where to store leftover paint, and you’ll be able to access your paint whenever you need to.