How Long Does Paint Last? A Guide for Homeowners

When tackling a home painting project, you’re often left with extra paint for touch-ups later. But here’s the thing—paint doesn’t last forever, and keeping it stored in a garage or shed for years might not be ideal. You may even be holding onto expired paint without realizing it.

How can you tell if paint has gone bad? How long can you store it before it’s no longer usable?

At CertaPro Painters of Indianapolis, we solve this for our customers by purchasing fresh, high-quality paint for every project. Shelf life is never an issue when you hire us, but many curious homeowners often ask us about paint longevity. To help, we’ve drafted this guide to explain how long paint lasts, the signs of expired paint, and tips to store it properly.

Paint Shelf Life by Type

The lifespan of paint depends on its type, brand, and how it’s stored. Under good conditions, some paints can last for years, while others have a much shorter shelf life.

Below is a general guideline for paint shelf life when stored without being opened and under proper conditions:

• Latex or Acrylic-Latex Paint: 2 to 10 years
• Oil-Based Paint: 2 to 15 years
• Chalk Paint: 1 to 5 years

Latex or Acrylic-Latex Paint

Latex paints typically have a shorter shelf life than oil-based options. Major brands like PPG and Glidden suggest a 2-year lifespan for unopened cans, while Sherwin-Williams and Behr recommend using their paints within 1 year. However, many experts agree that properly stored latex paint can last up to 10 years. Always spot-test older paints before using them.

Oil-Based Paint

Thanks to the solvents in oil-based paints, they tend to last longer than latex paints. When stored in a cool, dry place and sealed properly, oil-based paint can remain usable for up to 15 years.

Chalk Paint

Chalk paint is less durable over time. According to most manufacturers, its shelf life is about 1 year. Beyond that, it may thicken and become too difficult to use.

Signs That Paint Has Expired

Not sure if your paint is still good? Here are some common indicators that it’s time to toss it out and buy a fresh batch.

1. Odd Smell

If your paint smells moldy or mildewy, it’s no longer safe to use. Discard it immediately and purchase a new can.

2. Frozen and Thawed

Repeated freezing and thawing can ruin paint. While some paints might survive a single freeze, the quality and adhesion start deteriorating if this happens multiple times.

3. Lumpy Texture

If your paint has developed clumps or chunks, it’s beyond repair. Even stirring won’t fix it. Lumpy paint not only applies poorly but also lacks the smooth finish you want.

4. Jellied Consistency

Once paint turns into a jelly-like substance, it’s unusable. Paint should always be a smooth, liquid consistency.

How to Preserve Paint Like a Pro

Proper storage can significantly extend paint’s shelf life. Here are some tips from our professional painters to help you protect your leftover paint.

• Store in a Cool, Dry Place

Avoid extreme temperatures—both hot and cold. Keep paint indoors in a climate-controlled environment to prevent damage.

• Prevent Contamination

Keep dirt, grass, or leaves away from your paint. Even small impurities can ruin a can.

• Use Airtight Storage

Transfer paint to a durable, sealable plastic container. This prevents rust from contaminating the paint.

• Add Plastic Wrap to the Lid

Before sealing the paint, place a sheet of plastic wrap between the lid and the can. Use a rubber mallet—never a hammer—to avoid denting the lid when sealing.

These steps can help your leftover paint last longer, saving you time and money when it’s time for touch-ups.

Want to Simplify Your Painting Job?

When you hire CertaPro Painters of Indianapolis, we take care of everything, from purchasing freshly mixed paint to ensuring the best application techniques. That means no leftover paint cans cluttering your garage, no worries about expired paint, and no stress about choosing the right colors or finishes.

Have questions about paint or need help with a painting project? Contact us today for a free estimate and professional assistance.

CertaPro Painters of Indianapolis—because every wall deserves a flawless finish.