13 Aug How long can we keep old paint?
- Solids have hardened at the bottom and can’t be mixed.
- Any sign of mold in the paint.
- If the paint isn’t mixing well or if there are solids not softening into the paint.
FAQ
How long does paint typically last in storage?
Latex paints generally last 5–10 years, while oil-based paints can last 10–15 years if stored properly in a sealed container and a climate-controlled environment. Opened cans have a shorter shelf life, often just 2–5 years, depending on storage conditions.
What are the signs that old paint has gone bad?
Paint is likely spoiled if it has a sour or unpleasant odor, appears curdled or lumpy, or has visible mold. If the paint is smooth and smells like ammonia, it may still be usable after thorough stirring.
Where should I store leftover paint to maximize its shelf life?
Store paint in a cool, dry, and climate-controlled area, such as a closet, utility room, or basement (on a shelf to avoid moisture). Avoid places with temperature extremes like garages or attics, as freezing or excessive heat can ruin the paint.
Can separated or thickened paint be saved and used?
If paint has simply separated, try stirring it thoroughly. If it mixes back to a smooth consistency, it is likely still good. However, if it remains lumpy or cannot be mixed smooth, it should be disposed of.
What is the best way to store small amounts of leftover paint?
Transfer small amounts into airtight containers like glass jars or quart cans, label them with the color and date, and store them in a stable, indoor environment. This minimizes air exposure and helps preserve the paint for future touch-ups.
Mike Katounas is the owner of Home Works Painting, a painting business in Northern Virginia. He has over 15 years of experience in residential interior and exterior painting, drywall installation/repair, carpentry, wallpaper removal, power washing, commercial painting, color consultation, and staining/sealing. Their service areas include Chantilly, Fairfax, Herndon, Oakton, Reston. Mike takes pride in his work, and he always follows a strict code of conduct that includes the use of quality paint, a clean workspace, and an honest, respectful approach to his customers.
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