{"id":3607,"date":"2026-10-23T12:22:08","date_gmt":"2026-10-23T04:22:08","guid":{"rendered":"http:\/\/www.lantianfmf.com\/blog\/?p=3607"},"modified":"2026-10-23T12:22:08","modified_gmt":"2026-10-23T04:22:08","slug":"are-resin-fridge-magnets-affected-by-humidity-4ccd-011c9e","status":"publish","type":"post","link":"http:\/\/www.lantianfmf.com\/blog\/2026\/10\/23\/are-resin-fridge-magnets-affected-by-humidity-4ccd-011c9e\/","title":{"rendered":"Are resin fridge magnets affected by humidity?"},"content":{"rendered":"

Hey everyone, it\u2019s Jake here, founder of that small resin fridge magnet brand you\u2019ve probably seen popping up in a few craft markets and Etsy shops lately. I get all kinds of DMs and comments from people asking random questions about these little guys, and one I\u2019ve been getting a ton lately is: \u201cDo resin fridge magnets get messed up by humidity? I live somewhere super muggy, so I\u2019m scared they\u2019ll get ruined in my kitchen.\u201d Resin Fridge Magnet<\/a><\/p>\n

<\/p>\n

Fair question, honestly. I used to worry about this too when I first started making these in my garage back in 2019. My first batch had a few that got left out on a windowsill during a summer monsoon (oops, forgot to bring them in) and one turned a little foggy. That\u2019s when I started digging into why that happened, testing all kinds of conditions, and working with a chemist buddy of mine to figure out how to make them hold up better. So today, I\u2019m breaking this down real casual, no textbook jargon, just straight-up what I\u2019ve learned from making and selling thousands of these things over the last 5 years.<\/p>\n

First off, let\u2019s get one thing straight: resin itself isn\u2019t a total moisture magnet, but not all resin is created equal. The stuff I use now is a two-part epoxy resin, right? Not that cheap thin stuff you get at the dollar store that\u2019s basically just plastic with some pigment. Dollar store resin\u2019s often formulated for basic crafts, not constant exposure to the kind of humidity you get in a kitchen or a bathroom that\u2019s right next to the fridge (trust me, I\u2019ve seen people put magnets by the fridge steam vent, which is basically a humidity bomb). That thin resin actually absorbs tiny amounts of water over time, which is what causes that fogginess or even slight discoloration if it\u2019s sitting in super damp air.<\/p>\n

Wait, let\u2019s make that clear: it\u2019s not that humidity \u201cattacks\u201d the resin. It\u2019s moisture from the air getting trapped in tiny, microscopic gaps in the resin\u2019s surface or structure. Like, imagine a sponge that\u2019s so tiny you can\u2019t see the holes. Humidity is water vapor, so when the air is really wet, those tiny gaps fill up with water, and that makes the resin look cloudy. I tested this a bunch: I left two batches of the same design out in my bathroom for 3 months. One was made with that cheap craft resin, and it was all foggy when I checked. The other was my regular epoxy resin, and it looked exactly the same as when I put it there.<\/p>\n

But here\u2019s the thing: even the good resin isn\u2019t totally immune to extreme, constant humidity. Like, if you live somewhere that\u2019s 90% humidity 24\/7, like parts of Florida or Southeast Asia, yeah, you might see very minor fading after a few years. But that\u2019s not a \u201cruined\u201d level. It\u2019s just a tiny change, not something that makes the magnet stop working or fall apart. I\u2019ve had customers in Miami and Singapore message me a few years after they bought magnets and say they still look great, just a little less bright than when they got them, which I also kind of love\u2014gives them that little bit of character over time.<\/p>\n

Another big factor here is the finish we put on top. I learned this the hard way too. Early on, I just poured the resin and called it done. Then a customer in Houston sent a photo of their magnet after a summer rainstorm\u2014water had beaded on top, seeped under the resin edge, and made the whole thing lift a tiny bit off the fridge. That\u2019s when I started adding a top coat of UV-resistant sealant. Not just any sealant, though. I use a polycrylic one that\u2019s made for outdoor use, because it\u2019s flexible enough to move with the resin when the temperature changes (which also affects humidity, by the way\u2014hot air holds more moisture, so when the AC kicks on and it cools down, the moisture in the air turns to condensation, which is another thing that can get trapped if there\u2019s no seal).<\/p>\n

Wait, let\u2019s talk condensation specifically because that\u2019s a way bigger issue than just regular humidity. If you live somewhere with super hot, humid days that turn cool at night, or you have your fridge in a spot where it\u2019s right next to a window that gets morning dew, that condensation is like little water droplets sitting directly on your magnet. If the seal is good, it just beads off and doesn\u2019t get in. If the seal is bad, those droplets will seep in, and you get that fogginess I mentioned earlier. I tested this by putting a magnet on my fridge right above the water dispenser for 6 months\u2014super steamy every time someone gets a glass of water. Still looks perfect, no fog, no lifting. That\u2019s the power of a good top coat.<\/p>\n

Also, what the magnet is embedded in or under matters a lot. I make a lot of custom magnets\u2014some with dried flowers, some with glitter, some with little tiny resin figurines. The dried ones? If you use fresh flowers instead of properly pressed, dried ones, they can hold moisture inside, which will then escape over time and get trapped in the resin, making it foggy. I stopped using fresh blooms a long time ago for that exact reason. Glitter is fine, but I make sure it\u2019s sealed tight so it doesn\u2019t leach any oils into the resin that could make it cloudy. And the tiny figurines\u2014they\u2019re all resin too, so I make sure they\u2019re fully cured before embedding them, because uncured resin can have leftover chemicals that react with moisture.<\/p>\n

Now, let\u2019s get to the real world stuff, because I know you guys care about actual use cases. If your kitchen is like mine\u2014average humidity, not a sauna, not a desert\u2014these magnets are basically indestructible when it comes to humidity. I\u2019ve had some on my own fridge for 4 years, and they look the same as day one. If you live in a super humid place, or you like to leave your magnets on the back porch (wait, don\u2019t do that, actually\u2014they\u2019re fridge magnets, meant for fridges), they\u2019ll still last a long time, just maybe a tiny bit of fading after 2 or 3 years, which is normal for any decorative item.<\/p>\n

Wait, I also want to bust a myth here: some people say resin magnets will get rusty. No, not if the magnet itself is sealed. I use neodymium magnets, but I always glue them into the back of the resin with a strong epoxy, then add another layer of resin over the back to seal it completely. So that magnet is totally encased, no exposure to air or moisture, so no rust. I had a customer in Seattle, which is like the rainiest place in the US, buy a set for their new apartment, and they told me a year later the magnets worked just as well as when they got them. That\u2019s the sealed back doing its job.<\/p>\n

Another test I did a while back: I took a few magnets and left them in a humidity chamber that\u2019s set to 95% humidity, which is way higher than almost any kitchen ever gets, for 30 days straight. I checked them every week. The only one that had any issue was the one made with that cheap craft resin, and it was a little foggy around the edges. The ones made with my regular epoxy and top coat? No changes at all, even under a magnifying glass. That\u2019s when I knew I was onto something.<\/p>\n

Now, why does this matter to you, especially if you\u2019re looking to buy resin fridge magnets in bulk, or even for your own use? Because not all makers are as careful as I am. A lot of people just mix resin, pour it, add a magnet, and that\u2019s it\u2014no top coat, no sealed back, cheap resin. So if you buy a $5 set of magnets from a random Etsy seller that\u2019s super cheap, there\u2019s a good chance they\u2019ll get ruined by humidity way faster. But if you buy quality resin, a good seal, and take basic care of them, they\u2019ll last you for years.<\/p>\n

Wait, care tips! Let\u2019s throw those in real quick, since that\u2019s probably what you\u2019re here for. If you have a resin fridge magnet, don\u2019t scrub it with super harsh chemicals when you clean your fridge. Just wipe it with a damp cloth and a little mild soap, done. Don\u2019t leave it out in the sun for weeks on end\u2014UV rays can fade the pigment, but that\u2019s not humidity related, just good general care. And if you notice a tiny bit of condensation on the back edge (that\u2019s rare, but if it happens), just wipe it off with a dry cloth, no big deal.<\/p>\n

As a supplier, this is the stuff I care about more than anything. I don\u2019t sell junk that falls apart. Every batch I make goes through a quick humidity test before it ships\u2014nothing crazy, just leaving a few out on my workshop counter for a week to make sure no fogginess pops up. I also include a little care card with every order that talks about how to keep your magnets looking good, because I want my customers to be happy with their purchase for years, not just a month.<\/p>\n

I know a lot of people are worried about this because they\u2019ve had bad experiences with cheap resin items. I get it\u2014my first batch was terrible. That\u2019s why I\u2019m so open about this stuff. I don\u2019t want anyone to buy a magnet from me thinking it\u2019ll last forever in a super humid bathroom, because it might, but I\u2019d rather set realistic expectations than have someone come back upset. But at the same time, I want everyone to know that high-quality resin fridge magnets are totally fine for regular kitchen use, even in pretty humid areas.<\/p>\n

So to wrap this up, let\u2019s answer the original question clearly: Are resin fridge magnets affected by humidity? Short answer: Only if they\u2019re made with cheap resin and no proper sealing. If they\u2019re made with good two-part epoxy, have a UV-resistant top coat, and a sealed back with the magnet, they\u2019re basically resistant to normal kitchen humidity, and even most of the really humid places out there. The only time you\u2019ll see a change is if you have extremely high humidity 24\/7 for years, or they get left in direct condensation for weeks on end, and even then it\u2019s minor, not something that makes them stop working or look terrible.<\/p>\n

<\/p>\n

If you\u2019re looking for durable resin fridge magnets, whether for personal use or for your business, hit me up to chat. I can send over samples, tell you more about how I make them to hold up to humidity, and work with you on whatever size or design you need. I\u2019ve worked with cafes, boutique shops, and even a few wedding planners doing custom magnets, so I know how to tailor orders to fit different needs, no matter where you\u2019re located.<\/p>\n

Resin Keychains<\/a> References:<\/p>\n

    \n
  1. Lambourne, R., & Strivens, T. A. (1999). Paint and Surface Coatings: Theory and Practice. Woodhead Publishing.<\/li>\n
  2. Polymer Science Learning Center. (2018). Water Absorption in Polymers. University of Southern Mississippi.<\/li>\n
  3. ASTM International. (2020). Standard Test Method for Water Absorption of Plastics. ASTM D570-20.<\/li>\n<\/ol>\n
    \n

    Shengzhou Shengteng Accessories Co., Ltd.<\/a>
    With abundant experience, we are one of the most professional resin fridge magnet manufacturers and suppliers in China. We warmly welcome you to wholesale customized resin fridge magnet at competitive price from our factory. For free sample, contact us now.
    Address: Room 701, Building 23, Wanyang Innovation City, No. 368 Kaiya Road, Changle Town, Shengzhou City, Shaoxing City, Zhejiang Province
    E-mail: 15869252296@163.com
    WebSite:     https:\/\/www.shengtengjewelry.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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