If you’re reading this, odds are you work with interior wood products—maybe you’re a contractor fitting out high-end offices, an interior designer sourcing custom cabinetry, or someone who just bought a solid wood dining table from our warehouse and is trying to figure out why that gorgeous oak you picked out last month is now splitting at the edges. I get it; we’ve all been there. I’m Jake, co-owner of our interior wood products supply business, and we’ve shipped thousands of pieces over the last 12 years, so I’ve seen every storage mistake there is to make. The truth is, wood isn’t just “wood”—it’s a living, breathing material that’ll fight you every step of the way if you don’t treat it right. Most people think storing wood is just sticking it in a garage and crossing their fingers, but that’s a fast track to warped panels, cracked trim, or moldy cabinet doors. Today I’m breaking down exactly how we store every product that leaves our warehouse, because that same system works for your shop, job site, or even your client’s space. Let’s dive in. Interior Wood Products
First, let’s get one thing straight: wood’s biggest enemy is moisture swings. I can’t stress this enough. Wood is hygroscopic, which means it absorbs and releases water vapor from the air around it like a sponge. When it takes in too much moisture too fast, it swells; when it loses it too quickly, it shrinks. And here’s the kicker—wood shrinks and swells way more across its width than along its length. That’s why you’ll see a 6-foot solid oak door split down the middle, or a cabinet panel warp into a U-shape. Most job sites or small storage spaces are garbage for this because they’re too hot in summer, too cold and damp in winter, and not climate-controlled. So first rule: control your environment before you even touch a piece of wood.
Wait, before you load that plywood stack into your truck or drag a custom bookshelf off our delivery pallet, let’s talk about acclimation. This is the step 9 out of 10 people skip, and it’s the number one cause of on-site wood issues. When we cut or mill wood at our facility, we condition it to a certain moisture content (MC)—usually between 6% and 8% for interior use, right where it needs to be to fit doors, drawers, or trim without sticking or splitting. But if you ship that piece from our warehouse in, say, Ohio, and drop it off in a job site in Florida that’s at 12% MC, that wood will suck up Florida humidity before you even get it uncrated. We tell every single one of our clients to acclimate wood at the job site for at least 72 hours before installation, and that’s non-negotiable. How? Just leave it in the unopened packaging (we shrink-wrap all our wood products, so that helps) in the room it’s going into. Don’t leave it in the garage, don’t set it on the back porch—get it in the space it’ll live in. If you’re storing wood for a longer period, acclimate it in its intended space too. Trying to rush this step is like baking a cake and putting it in the fridge immediately—you’re just asking for it to crack.
Next up, how you stack it. Most people just pile wood up any which way, leaning against a wall or tossing panels on top of each other, and that’s a disaster waiting to happen. Last year we had a client who stored 20 solid maple cabinet doors leaning against a concrete wall in his shop for three months. When he took them down, half were warped so bad they wouldn’t fit in their frames. Why? Because they were leaning at a 45-degree angle, and gravity pulled on the top edge unevenly, plus the concrete wall was damp, so the bottom edges of the doors absorbed more moisture. The right way to stack wood is flat, period. No leaning, no propping, nothing. If you have to stack multiple pieces, make sure each one is separated by stickers—thin, flat pieces of the same thickness wood, spaced 16 to 24 inches apart along the stack. These stickers let air circulate between every panel or piece, so no moisture gets trapped in the middle. Also, make sure the entire stack is perfectly level. If one end is higher than the other, the top pieces will sag over time, which leads to warps. We use metal racks in our warehouse built just for this—they hold stacks level and have built-in ventilation. For smaller pieces, like trim or small cabinet parts, we use plastic bins with slatted bottoms, not closed bins—no trapped moisture there, either.
Now, temperature and humidity control, which ties back to that whole moisture swing thing. For long-term storage (anything over two weeks), you want to keep the space at a consistent temperature between 60°F and 70°F, and relative humidity between 30% and 50%. That’s the sweet spot for interior wood. Our warehouse has a whole HVAC system that keeps it right there, and we test the MC of every batch of wood weekly to make sure it stays in that range. If you don’t have a climate-controlled space, don’t panic—there are workarounds. For example, in winter, most people’s houses or shops get super dry because of heating. I’d keep a humidifier running near the wood stack if the RH drops below 30%. In summer, especially if you’re in a humid area like the Southeast, use a dehumidifier to keep RH from climbing over 55%. If you’re storing wood in a garage or attic, that’s a no-go for long-term—garages swing way too much. If you have to use a garage, at least put a plastic vapor barrier between the wood and the concrete floor, and cover the top of the stack with a breathable tarp, not plastic. Plastic traps moisture on top, which is as bad as no covering at all. Also, keep wood away from direct sunlight or heat sources—like space heaters, radiators, or even windows that get full sun all day. Direct sun will bake the top of the wood, making it shrink faster than the inside, leading to surface cracks (called checking) that you can’t fix. We once had a job where a client stored a reclaimed oak beam against a south-facing window for two months, and it developed 3-inch deep checks along the top edge—we had to send them a replacement, which we never like doing.
What about different types of wood products? Wait a second—storing a solid wood dining table is way different than storing cabinet panels or trim. I see people treating all wood the same, and that’s a mistake. Solid wood is way more prone to movement than engineered wood or plywood, because it’s just a single piece of wood, no layers to hold it stable. So for solid wood pieces, don’t stack them flat if they’re large—like a tabletop that’s 8 feet long. If you stack two tabletops on top of each other, the bottom one will get dented, and the top one might sag, especially if it’s heavy. Instead, store solid wood furniture upright, leaning against a padded wall, at a slight angle (10 to 15 degrees, not 45). And put a felt pad between the furniture and the wall so it doesn’t scratch the finish. For cabinet panels or plywood, which are engineered to be more stable, you can stack them flat, but still use stickers for air flow. Laminate or veneer products? Those are more sensitive to heat than anything—don’t store them anywhere near a heat source, because the laminate can bubble or peel off the core. Also, never store any wood product (especially finished ones) with anything that has a strong odor, like paint cans, cleaning supplies, or even some types of plastic. Wood absorbs odors like crazy, and once that smell is in there, it’s permanent. We had a client who stored white oak trim next to a bucket of oil-based stain for a month—when he installed it, the whole trim smelled like stain, and he had to replace it. Total waste of time and money.
Short-term vs long-term storage—let’s cover that too. If you’re storing wood for less than two weeks, you can get away with simpler steps, but don’t skip the basics. Keep it off the ground, away from walls, covered with a breathable tarp, and check the moisture levels if you can. For long-term, like a project that’s been put on hold for months, you need to be way more detailed. We have a log in our warehouse for every wood product that’s stored over 30 days—we note its MC, the humidity in the space, and rotate the stack every month to prevent one side from absorbing more moisture. Also, inspect for pests, especially if you’re storing wood for a long time. Termites, carpenter ants, and even powderpost beetles love untreated wood. That’s why we treat all our raw wood products with a low-toxicity pest control before storage, but if you’re storing untreated wood, you’ll want to inspect it monthly for small holes or sawdust (that’s a sign of beetles). Never store wood near mulch or trees, either—those attract pests too.
Wait, let’s talk about common mistakes people make that I see every day. First, closing bins or wrapping wood in plastic for long-term. Like I said, plastic traps moisture, so if you do wrap it, use a breathable film, not regular plastic. Second, storing wood on the floor directly. Concrete absorbs moisture, especially in damp weather, so wood sitting on concrete will suck up that moisture and warp. Use pallets or cinder blocks to lift wood at least 6 inches off the ground, so air can circulate underneath too. Third, not checking for damage before installing or using the wood. We always tell our clients to do a quick inspection when they first get a delivery—look for water spots, dents, warps, or pest signs—because it’s way easier to get a replacement from us before you start working with it, not after you’ve already cut it and it’s ruined.
I know this sounds like a lot of steps, but once you get into the habit, it’s second nature. We’ve refined our storage process over 12 years of shipping interior wood products, and it’s saved us thousands in returns and our clients way more in headaches. At the end of the day, wood is an investment—whether it’s a $50 trim piece or a $10,000 custom set of cabinets—so taking the time to store it right protects that investment.
If you’re working on an interior project and need quality interior wood products, or you have questions about storing the ones you already have, don’t hesitate to reach out. Our team knows this stuff inside and out, and we’re always happy to help. We can also give you specific tips tailored to the type of wood you’re working with, or your job site’s conditions. Just get in touch to chat through your needs.
Outdoor Structures References:
- Forest Products Laboratory, U.S. Department of Agriculture. Wood Handbook: Wood as an Engineering Material. 2010.
- American Wood Council. “Moisture Control for Wood Products in Interior Applications.” 2022.
- Tile Council of North America, Inc. and Woodwork Manufacturers Association of Canada. “Best Practices for Storage of Interior Wood Finishes and Products.” 2021.
- International Building Code. “Moisture Management for Building Materials.” 2021 Edition.
Zendekin Low-Carbon Technology Co., Ltd.
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