Based on the provided information, if the paint from 2012 was unopened, it might still be usable, depending on the type of paint.
Here's a more detailed breakdown:
Paint Shelf Life Based on Type
| Paint Type | Shelf Life (Unopened) |
|---|---|
| Latex or Acrylic | Up to 10 years |
| Oil-based or Alkyd-based | Up to 15 years |
According to the reference, an unopened can of latex or acrylic paint lasts up to 10 years. Since 2012 was more than 10 years ago, it's likely that a latex or acrylic paint manufactured in 2012 is no longer good, even if it has been stored properly and is unopened. However, an unopened can of oil-based or alkyd-based paint could last up to 15 years. Therefore, oil-based or alkyd-based paint from 2012 may still be good.
Factors Affecting Paint Quality
Even within the stated shelf life, certain factors can influence whether the paint is still usable:
- Storage Conditions: Extreme temperatures (freezing or excessive heat) can ruin paint regardless of type and age.
- Sealed Condition: An unopened can prevents air exposure, which is critical for longevity.
- Type of Paint: As shown above, oil-based paints tend to have longer shelf lives.
What To Look For
Before using the paint, check for:
- Separation: If the paint is separated with a layer of liquid on top, it might be usable after thorough mixing.
- Lumps or chunks: These indicate the paint is likely no longer useable.
- Foul odor: Paint that is no longer usable often has a foul smell.
Summary:
- If you have latex or acrylic paint from 2012, even if it is unopened, it is unlikely to be good due to exceeding the 10 year shelf life.
- If you have oil-based or alkyd-based paint from 2012, it may still be good, if unopened and properly stored, given its potential 15 year shelf life.
It is important to always inspect the paint before use for the above signs of deterioration.
