How Long Does Paint Last? A Detailed Guide

How long does paint last is important to know before you go dipping into those old opened cans of paint which will eventually damage or give your room a bad smell?

How Long Does Paint Last? A Detailed Guide

First of all, it is important to know that each type of paint is different.

Therefore, Its chemical composition determines how long it will last.

You might want to use that old bucket of paint, but how long does paint last? Let’s find out!

How Long Does Paint Last?

Paint cans are imprinted with a manufacturer’s expiration date but can last much longer if stored properly.

By the above statement, we can therefore say; paint shelf-life is determined by the carrier.

For instance, an unopened can of oil-based paint can last for 15 years.

While unopened water-based paint can last up to ten years.

Does Paint Have a Shelf Life?

When the paint is stored correctly, an unopened can of latex or oil-based paint should have a shelf life of 2 years.

The best storage for paint is in a cool, dry area, away from extreme hot and cold temperatures.

Paint should never be permitted to freeze and should be stored away from furnaces and other heat-generating appliances.

However, the illustration below shows how long paint can last if stored in the right conditions.

Paint Duration For Unopened Paint Lifespan

This has to do with the duration period for unopened paint lifespan.

1. Oil-based paint: Can last up to 15 years

2. Water-based paint: Can last up to 10 years

3. Chalk paint: Can last up to 5 years

4. Milk paint unmixed: Can last up to 2 years

Paint Duration For Opened Paint Lifespan

This has to do with the duration period for opened paint lifespan.

1. Oil-based paint: Can last up to 10 years

2. Water-based paint: Can last up to 7 years

3. Chalk paint: Can last up to 2 years

4. Milk paint mixed: Can last up to 7 days

What Causes Paint Not to Last Long?

Numerous factors can cause the paint not to last long. If not properly checked, such factors will cause paint to spoil within months.

1. Bacterial Growth

Paint develops a bad odor if it has bacteria contamination.

If paint smells, it is best to throw it out as the smell can linger on walls and may worsen over time.

2. Extreme Heat

Heat contact can change the chemical composition of paint, preventing it from bonding to surfaces.

Heat will also dry out the paint to the point of no return.

3. Freezing Temperatures

Water-based paints are more liable to freezing temperatures than oil-based paints. freezing paint can form lumps that you may be able to break down by stirring.

If the paint separates, try to stir it back to life. If it keeps separating after stirring, then throw it away.

However, the best way to extend the life of the paint is to reseal its container, making it as airtight as possible.

If you can achieve a good seal and store paint in a climate-controlled environment, it will last longer.

Unopened and opened cans of paint can last a long time when stored in proper conditions.

Oil-based paints tend to last the longest, with up to a fifteen-year lifespan. While water-based paints do not last as long but can still survive up to a decade in ideal conditions.

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