While today's paints are versatile enough to handle a wide range of temperatures for a short time, storing them for long periods should be done at temperature ranges between 60 and 80 degrees Fahrenheit.
As a general guideline, paints and solvents should not be stored in freezing temperatures. Storing paint in a garage won't work well if you have cold weather in your area. The point at which low temperatures will render your paint unusable varies based on what kind of paint you have.
If your storage room has experienced freezing temperature or extreme heat, your paint may be ruined. Extreme temperatures to paint are below 50°F or above room temperature, or 72°F. When exposed to extreme temperatures the paint components may separate, which makes them unusable.
The Temperature and Frozen Paint
Water-based paint can start to freeze at 32 degrees Fahrenheit.
Can Paint Be Stored In Garage Over Winter? Winter is a bad time to store it in the garage. In the winter, garages are not heated, which means that the paint will freeze. Paint should never be stored in a damp area (cold storage or a porch).
Freezing temperatures can do permanent damage to the emulsion in paint, causing the paint to become a strange consistency. Paint that has frozen and thawed may become ropey, stringy or clumpy. It may be the consistency of cottage cheese or gritty, like sandy water.
Paint shouldn't be stored outside. Paint is susceptible to extreme fluctuations in temperatures and shouldn't be stored long term in environments that are hot, cold, or highly humid.
You cannot store paint in an unheated garage. In fact, you're better off not keeping paint in any area where there's a strong likelihood of extremely hot or cold temperatures (even more so outside). Such conditions can chemically alter the paint, making it difficult, or perhaps impossible, to use.
Don't store paint in your shed. In the summer, your shed will surely get pretty toasty as temperatures rise. If paint is stored in extremely hot or cold temperatures, its consistency will change, leaving it unusable. Instead, find a cool, dry place for your paint, such as a basement or closet inside your home.
Once the paint has thawed completely, mix thoroughly to ensure a consistent consistency. As long as the paint is not clumpy and doesn't have a foul odor, it is usable.
Since it's water-based, the paint can freeze at 32 degrees Fahrenheit just like regular water. If you store your paint in an unheated garage or storage shed and you live in a cooler climate, there's a good chance the paint will reach temperatures below the freezing point during the winter months.
Oftentimes, people throw their leftover paint in the garage, and they assume it will be fine when they need to use it again. It can be a surprise when they open the paint, and it has gone bad. If you store paint properly, it is usable for around five years, but it is important to make sure that you do it the right way.
There will be changes in texture, color, and odor even before frozen paint defrosts. Most of the time, thawing and stirring can easily restore the paint and ready for use. Sometimes, straining some clumps that form during freezing can also bring back the paint.
Paint. Oil paints shouldn't be stored in an attic because they're highly flammable. But even latex paint, which is non-flammable, can deteriorate in an attic environment.
The most common areas to store paints are basement storage areas or closets. Do not store it in the garage, especially in the winter months. The paint will freeze since most garages are not heated over the winter. Never store the paint in a damp area (cold storage or a porch area).
In hot weather (especially in direct sunlight), the paint dries too quickly, causing cracks or peeling, now or in the future, as it can't fully bind. A latex paint may dry out before it can be properly brushed out if it is exposed to direct sunlight on hot days or at an ambient temperature above 85 degrees.
Paint can freeze at 32 degrees Fahrenheit, just like regular water, since it is water-based. In a colder climate, paint will likely reach temperatures below freezing if it is stored in an unheated garage or storage shed.
Here's a run down of looking after paintbrushes during and after use. Paint skins over at different rates depending on heat and draughts but as a rule of thumb, don;t leave paint standing uncovered (unless using it!) The Kovrd is great for slipping your emulsion kit, paint and tray into for 2 minutes or 2 weeks.
If it's unopened, it's probably still usable.
Unopened cans of paint last for years when stored correctly. Unused latex and water-based acrylic paints last up to 10 years, and the shelf life of alkyd and oil-based can be as long as 15 years.
Paint's Shelf Life
Water-based acrylic and latex paints can stay good for up to 10 years if never opened and kept from freezing. Leftover paints that have been opened should be closed up tightly, stored in a cool, dry place and used within two years.
Water-based and latex paints should never be left in freezing temperatures because the ingredients in the paint can freeze, expand, separate, and clump, rendering the paint virtually unusable for your next redecorating project.
Store leftover paint in a dry place that is out of direct sunlight. Paint should be stored out of reach of children and away from food and drink. Most types of leftover latex paint, including AURA®, REGAL® and ben®, should be stored either in a lined metal can to prevent rust, or a glass or plastic container.
Acrylic paints, mediums and varnishes should not be allowed to freeze. They become lumpy or rubbery and as such are not usable. Oils polymerise fine in cold weather.