Can house paint expire? One of the frequently asked questions is that some people may have purchased paint and not used it all, leaving them with buckets of leftover colors. They feel reluctant to throw it away and are unsure if stores will buy it back. Today, Beger takes the opportunity to invite color experts to clarify these doubts for everyone.
Does house paint have an expiration date?
Yes. Paint has an expiration date. However, the expiration date of the paint will not be written on the packaging; only the production date will be provided. When it comes to paint expiration, we will focus primarily on the deterioration of the paint’s quality. Importantly, in addition to water-based paints, oil-based paints and primers also have expiration dates.
How can I tell if the paint has expired?
A simple principle to check if the color you purchased is still okay or if it has expired is to… Check the production date. And Observe the abnormal characteristics of the color of the tissue.
Check the production date.
Normally, house paints, including water-based paints, oil-based paints, exterior paints, andInterior paint It will be more than ten years old after production. It depends on proper storage, which should be kept in a cool, dry place away from sunlight or heat for extended periods. Importantly, the container must not be leaking or damaged.
Therefore, as a rule, if the paint was produced no more than 10 years ago, that paint will still be valid. However, one should also consider the characteristics of the paint that appear abnormal, which will be discussed in the next topic.
Tips : If you can’t find the production date, there’s no need to worry. To check the day, month, and year of production, look for The first 6 digits of the Lot number or Batch no. at the barcode Most will be on the sticker next to the tank, where the production date will be arranged according to.##-##-##For example, in the image, this bucket of BEGER paint was produced on August 31, 2020 (20-08-31). If we lose the Lot number or the sticker peels off, we can also check the production date from the store where the paint was purchased.
Observe any abnormalities in the paint.
Even if the paint in the bucket was produced less than 10 years ago, if the texture of the paint in your bucket shows any of the following abnormalities, you should know that your paint has expired, deteriorated, and is not ready for use.
- Paint is dry and stuck to the bucket.
- Paint settles at the bottom forming clumps or is liquid like gel.
- Paint has clear separation layers, and even after stirring, it does not mix.
- The smell is stronger than usual, especially for water-based formulas.
How to store leftover paint, how long does it last?
Water-based acrylic house paint or water-based primer.
- In the case of opening the lid but not doing anything yet (maybe just opened to check the shade) without mixing with water, close the lid tightly and store it properly, avoiding extremely hot or humid areas. The paint will have a shelf life of almost the same as before, which isapproximately 10 years.
- In the case of opening the lid, stirring the paint, pouring it out, or mixing it, close the lid tightly as well and store it in a suitable place. The shelf life of the paint will decrease toapproximately 1 month.
- In the case of opening the lid, mixing with water, if the lid is closed tightly and stored properly, the shelf life of the paint will beapproximately 1 week.
Oil-based paint.
- Storing leftover oil-based paint is quite similar to water-based paint. Just close the lid tightly, and the shelf life of the paint will hardly decrease, even if thinner has been mixed in. However, the difference is that when you want to use it again, you may find that the surface of the paint has formed a film or separated. Remove that film and stir the mixture to combine.
Summary.
House paint may have an expiration date, but if stored correctly according to the recommended methods, the paint you purchased can still be kept for a long time. However, always check for abnormalities in the paint before use, because using expired paint may lead to various problems. It is best that paint experts recommendcalculating the amount of paintneeded to be just right and using it all in one day is the best approach.
