TL;DR: Storing spray paint properly is easy—keep it in a cool, dry place, store it upright, and clean the nozzle after use. Follow these steps to extend its shelf life for 1-2 years.
Many people waste spray paint because they don’t store it properly—old, poorly stored spray paint can thicken, clog, or dry out. With simple storage steps, you can keep your spray paint in good condition for years.
1. Choose the Right Storage Location
The key to storing spray paint is a cool, dry, and well-ventilated area. Follow these rules:
Keep it away from heat sources (e.g., radiators, stoves, direct sunlight)—heat makes paint thicken and can cause the can to leak.
Store in a dry area (humidity causes rust on the can and clogs the nozzle).
Avoid extreme temperatures (below 10°C or above 30°C)—cold makes paint thick, hot makes it expand.
2. Store the Can Upright
Always store spray paint cans upright, not sideways or upside down. Storing them upright prevents paint from clogging the nozzle and keeps the propellant and paint mixed properly.
3. Clean the Nozzle Before Storage
A clogged nozzle is the most common problem with stored spray paint. Clean it before putting the can away:
After using the spray paint, turn the can upside down and spray for 2-3 seconds—this clears any paint from the nozzle.
If the nozzle is already clogged, soak it in warm water for 5 minutes, then use a pin to clear the holes.
4. Check the Can Regularly
Every few months, check your stored spray paint cans:
Look for leaks or rust on the can—if you see rust, use the paint soon or discard it.
Shake the can gently—if it feels thick or sloshy, it may be going bad. Test it by spraying a small amount on a piece of paper.
5. Don’t Mix Old and New Paint
If you have leftover spray paint from different cans, don’t mix them—old paint can contaminate new paint, causing clogs or uneven spray.
Pro Tip: Label your spray paint cans with the purchase date so you know when to use them first. Proper storage means you’ll never waste spray paint again!