The storage life of stain depends on whether it's oil-based or water-based, and whether the can has been opened.
Here's a breakdown:
-
Oil-Based Stain:
- Unopened: 2-3 years
- Opened: 1 year
-
Water-Based Stain:
- Unopened: 2 years
- Opened: 1 year
-
Oil-Based Varnish:
- Unopened or Opened: 1 year
It's crucial to store stain properly in a cool, dry place to maximize its shelf life. Make sure the lid is tightly sealed, especially after opening. If you notice the stain has thickened, separated significantly, or developed a foul odor, it's likely gone bad and should be disposed of properly.