If you’re an artist—whether you’re a hobbyist who paints on weekends or a full-time illustrator juggling a dozen mediums—you’ve definitely stared at a closet full of art supplies and thought: where do I even put all this? Tubes of acrylic paint that dry out after half a use, watercolor pans that get dusty, long paintbrushes with frayed bristles, those weirdly shaped sketchbooks that won’t fit on a shelf. I’ve been there too, and as someone who runs a vacuum bag supply company, I get asked all the time: can these tight, air-tight bags actually work for storing art supplies? The short answer? Yes—but only if you do it right. Let’s break this down without all the jargon, no stuffy lab talk, just real stuff I’ve learned from working with both artists and people who test our bags every day. Vacuum Bag
First, let’s talk about why art supplies go bad in the first place, because that’s the root of the problem. Most art materials hate three things: excess moisture, oxygen, and dust. Let’s take acrylic paint, for example. You crack a tube open, squeeze out some paint, and if you leave the cap off for even an hour, a thin skin forms on top. That skin is just dried paint where oxygen hit it—same as how an apple browns. Watercolor is even worse; those solid pans are prone to mold if there’s any humidity in the air, especially if you live somewhere with a lot of rain, like the Pacific Northwest or parts of the UK. Even things like charcoal sticks can absorb moisture from the air, which makes them crumble mid-drawing way faster.
Vacuum bags are all about removing oxygen and sealing out moisture, right? So on paper, that’s exactly what art supplies need. But here’s the catch: not all art supplies are the same, and not all vacuum bags are made equal. A lot of people grab a random food vacuum bag from the grocery store and try to stuff their paintbrushes in, and that’s where things can go wrong. For one, food bags are usually thinner, so if you have a metal ruler or a sharp pencil, they’ll puncture super easy. For two, some cheap vacuum bags have tiny pinholes you can’t even see, which means oxygen and moisture will still get in, defeating the whole purpose. That’s why as a supplier, we make bags that are thick enough to handle sharp edges but still flexible enough to wrap around weirdly shaped sketchbooks.
Let’s run through some common art supplies and how well vacuum bags work for each, because that’s the stuff that actually matters for you. Acrylic paints first—these are probably the most high-maintenance liquid supplies. I have a friend who’s a muralist; she used to throw away half a tube of paint every month because it dried out before she could finish it. Now she puts each tube in a vacuum bag, sucks out the air, and when she needs to use it, the paint inside is just as soft as the day she bought it. Wait, but hold on—don’t vacuum paint too hard. If you squeeze the tube until it’s flat as a pancake, you’re going to force paint out of the cap and make a mess inside the bag. You just want to remove the air around the tube, not the paint itself. Same with watercolor pans: those solid blocks don’t have liquid inside, so vacuuming them is totally safe. I’ve seen artists put a whole set of pans in one bag, add a little silica gel packet (more on that in a sec), and they’ve stayed mold-free for over a year now.
Then there’s dry supplies: charcoal, pastels, graphite sticks, even those giant rolls of paper. Charcoal is super porous, so if it absorbs moisture, it won’t make dark, clean lines anymore. Vacuum bags keep that moisture out, so your charcoal stays as powdery as the day you bought it. Pastels are a little trickier—some soft pastels crumble if you apply too much pressure, but if you just seal them in a vacuum bag without over-sucking, they’re fine. We had an artist test our bags for pastels and said her sticks didn’t crumble once in three months of storage, which was a huge win for her, since she used to lose half her stash to breakage. Sketchbooks are another big one. If you have a hardcover sketchbook that you’re not using right away, putting it in a vacuum bag will keep it free of dust and prevent the cover from fading. Just make sure to leave a little air in around the pages—if you vacuum too hard, the pages might stick together, especially if there’s any humidity.
Now, let’s talk about the mistakes people make when using vacuum bags for art supplies, because those are the things that can actually ruin your stuff. First, forgetting to add silica gel packets. Even if you vacuum out all the air, there’s still tiny bits of moisture in the bag from the supplies themselves—paint tubes have a little residual moisture, sketchbooks hold a bit, etc. Silica gel absorbs that leftover moisture, so it’s a must for anything that’s prone to mold. You can buy these super cheap online, just toss one in each bag before sealing it. Second, over-vacuuming. I can’t stress this enough. For liquid supplies like paint, you just need to remove the air around the tube—if it’s completely flat, you’re going to have issues. For dry supplies, a gentle vacuum is fine, but if you squeeze the bag so hard that it’s tight enough to bounce, you might break something. Third, not cleaning the supplies before you put them in. If you have a paintbrush with caked-on acrylic, or a charcoal stick that’s got dust all over it, putting it in a vacuum bag will trap that gunk there, and it’ll be way harder to clean later. Give your supplies a quick wipe with a damp cloth (for brushes) or a dry brush (for charcoal) before sealing them up. Fourth, using the wrong size bag. If you try to stuff a 12×16 inch sketchbook into a small food bag, it’s going to rip, and you’ll lose all the benefits. Invest in different sizes—we have small bags for paint tubes, medium for sets of brushes, large for sketchbooks and paper rolls.
Wait, what about things you shouldn’t put in vacuum bags? There are a few art supplies that actually don’t work with them, and it’s good to know these so you don’t waste time. First, oil paints. Wait, why? Oil paint is a bit tricky because it dries through oxidation, but if you remove all the oxygen, it won’t dry at all. But if you’re storing tubes of oil paint for long-term (like if you have a tube you’re not going to use for six months), a vacuum bag is fine—you just have to make sure you don’t open it until you’re ready to use it, because once you break the seal, it’ll start drying. Second, water-based markers. Those have liquid inside, and if you vacuum the bag too hard, you can force the ink out of the marker’s tip, making a mess. Third, loose paint chips or leftover scraps. These are tiny, and they’ll get sucked into the seal of the bag, which can ruin the bag’s ability to airtight over time. If you have small scraps, put them in a small container first, then put the container in the vacuum bag.
Now, let’s get into why this works better than other storage options, because that’s a big question. A lot of artists use plastic bins, right? But plastic bins aren’t airtight—even the ones with lids have tiny gaps where air and moisture can get in. Dust also gets in, no matter how tight the lid is. Vacuum bags are completely airtight, so nothing can get in or out. And they’re way more space-efficient. If you have a closet full of supplies, vacuum bags can shrink your stash down by 50% or more. I helped a local painter organize her studio last year, and she went from three shelves of supplies to one big bin full of vacuum-sealed bags. That’s a game-changer for anyone with a small space.
We’ve actually had a ton of artists test our bags, and the feedback has been insane. One watercolor artist in Portland told us she used to lose a whole set of pans to mold every winter, and after using our bags with silica gel, she hasn’t had a mold issue in two years. A muralist in Chicago said she saves over $100 a month now because she doesn’t have to throw away half-dried paint tubes. Those are the stories that make this job worth it, because we’re not just selling vacuum bags—we’re helping artists save money and keep their supplies in good shape longer.
Now, if you’re thinking about trying this, let’s make it easy for you. Don’t go out and buy random food bags—they’re thin, they don’t last, and they’re not designed for sharp art supplies. Look for bags that are thick (around 3 mils is good), have a strong seal, and are puncture-resistant. We make all of our bags specifically for storing art supplies, so they’re thick enough to handle paintbrushes, metal rulers, and sharp pencils without ripping, and they have a double seal that stays airtight, even after multiple uses. Also, make sure you’re using a good vacuum sealer—wait, do you need a fancy one? No, a basic home vacuum sealer works fine, but if you don’t have one, some of our bags are compatible with hand pumps, which is perfect if you’re just storing a few small items.
A quick pro tip from our team: label every bag. If you toss a bunch of paint tubes in a bag, you’ll forget which color is in there after a few months. Write on the bag with a permanent marker, or use a label sticker. Also, store the bags in a cool, dry place—don’t leave them in a hot attic or a damp basement, because even vacuum bags can hold up less well in extreme temperatures.
Wait, let’s address a common myth: some people think vacuum bags will make paint go bad faster, but that’s not true. Paint dries when oxygen reacts with it, so removing oxygen actually slows down the drying process. We’ve tested paint tubes sealed in vacuum bags for over two years, and when we opened them, the paint was still just as workable as the day it was sealed. That’s way better than leaving a tube in a drawer with the cap loosely on, which would dry out in a few weeks.
Another thing: what about paper? If you have large rolls of drawing paper, putting them in a vacuum bag will keep them free of dust and prevent them from warping. We’ve had artists store giant rolls of watercolor paper in our vacuum bags for over a year, and when they unrolled them, they were completely flat, no warping at all. That’s way better than storing paper in a cardboard box, which can get damp from the air and warp over time.
Now, if you’re ready to give this a shot, or if you’re a studio manager looking to organize a whole team’s supplies, we can help. We have bulk options for anyone who needs more than a few bags, and we can even customize bags for specific supplies if you have unique needs. No matter if you’re a hobbyist with a small stash or a professional with a studio full of supplies, we’ve got the bags to fit. If you’re curious about pricing, shipping, or just want to ask a question about the best way to store your specific art supplies, reach out to us to talk more—we’re always happy to help.
Aluminum Foil Bag References:
- Art Storage Magazine. (2022). "Moisture and Oxygen: The Top Causes of Art Supply Degradation"
- Journal of Art Materials Preservation. (2021). "Vacuum Packaging for Long-Term Storage of Watercolor and Acrylic Paint"
- International Artist Magazine. (2023). "Space-Saving Storage Solutions for Creative Studios"
- Silica Gel Manufacturers Association. (2022). "Best Practices for Humidity Control in Art Storage"
Jiangsu Dino New Materials Technology Co., Ltd.
Address: South of Hangzhou Road and east of Hengshan North Road, Sihong Economic Development Zone, Sihong County, Suqian City, Jiangsu Province, China
E-mail: 19551836609@139.com
WebSite: https://www.jsdinuo.com/
