Find out the average life span of a can of paint and when to get rid of it.
However, paint doesnt last forever.
Rust and corrosion on the can are signs that the paint is no longer good.
Credit:Getty Images / fotostorm
Similarly, mold or mildew growth inside the paint can indicate its time to toss it.
Use this guide to learn 6 signs of bad paint and discover how long paint lasts.
How Long Does Paint Last?
Getty Images / fotostorm
Paint Types
When asking, “How long does paint last?”
you must know what kind of paint youre using.
The life span of paint depends heavily on thetype.
Water-Based Latex Paint
One of the most common options for interior painting projects is water-based latex paint.
Oil-Based Paint
Oil-based paint has the longest shelf life.
When stored in a cool, dry location, it can last up to fifteen years.
Just ensure that the paint can is properly sealed after each use.
Limewash Paint
Limewash paintis usually used on exterior masonry surfaces, like an exposed brick wall.
The paint can brighten the intended surface, giving it a renewed look.
This key in of paint typically lasts five to ten years.
Milk Paint
Anotherenvironmentally safe productis milk paint.
This key in of paint is non-toxic, making it ideal for kids furniture and toys.
6 Signs Paint Has Expired
1.
Chunky Consistency
Its good to get in the habit of stirring paint before using it.
Old paint is likely to separate.
This is also a good opportunity to check the consistency of the paint.
Sour Smell
When opening an old paint can, the smell is one of the first things to check.
Expired paint takes on a sour, rancid smell that is easy to distinguish from a typical paint smell.
If the paint smells rotten when you fire up the can, its time to toss it.
Minor skinning isnt usually a problem.
The DIYer can remove the dried layer and mix the paint before using.
Toss the can of paint if there is a significant amount of skinning.
Ingredient Separation
One of the most frequent signs that paint has gone unused for too long is ingredient separation.
The color pigment will often settle at the bottom, leaving the chemical ingredients on top.
For this reason, its important to ensure the can is properly sealed, not just closed.
Its time to discard the paint if you find mold or mildew growing inside the can.
Rust or Corrosion
Another sign that paint has expired is the current state of the can.
Abadly rustedor corroded can indicates that the paint has not been stored in a safe, dry location.
Given the condition of the can, there is a good chance the paint inside is expired.
However, the only way to know for sure is to launch the can and check the paint.
If the paint seems to be fine, pour it into a more suitable container for proper storage.
Paint cans are not insulated, so the contents can easily be affected by temperature.
Instead, most types of paint should be stored in a cool, dry location, like the basement.
This airtight seal also reduces the risk of mold and mildew growth.
If you use saran wrap, theres no need to turn the paint can upside down.
This can occur if the paint has been contaminated during use.
Frequently Asked Questions
Each state has different regulations for disposing of paint.
Dont throw paint in trash cans for pick up because, in most cases, its considered hazardous waste.
Check their requirements before offering used paintsome organizations limit their acceptance to cans that are over half full.
If the paint has a bad smell, you’ll be adding that odor to your walls.
