Storing firewood comes down to three things: keep it off the ground, cover the top, and let air move through the sides. Get those right and the wood you bought stays dry and ready to burn. Get them wrong and even kiln-dried wood can take on moisture and struggle to light.
Storing firewood is not complicated, but almost everyone gets one part of it wrong, and that one part is usually what turns good wood into wood that hisses, smokes, and struggles to catch. The frustrating thing is that the wood was often fine when it showed up. It went downhill sitting in the yard.
We run kilns and deliver firewood across SE Wisconsin, and we learned this the hard way in our own first year (more on that below, including the mistake that cost us half a season's wood). This guide covers where to put your wood, whether to cover it, how to keep it dry through a Wisconsin winter, and the storage mistakes we see most often. The goal is simple: keep the wood you paid for in the same shape it was in the day you got it.
Every rule in this guide comes back to three jobs. Get these three right and the details mostly take care of themselves.
Notice what is not on that list: sun. Sun helps, but it is not the main event. The thing that actually pulls moisture out of wood and keeps it dry is moving air, and the moisture leaves through the cut ends of each piece, not through the bark on the sides. Keep that picture in your head (air moving across open ends) and the rest of this guide will make sense.
Before you stack a single piece, pick the right spot. A good location does half the work for you, and a bad one can quietly ruin wood no matter how carefully you stack it.
Look for four things. First, some distance from the house. Keeping the stack a little away from your exterior wall keeps insects that live in firewood from moving straight into your siding, and it is the safer choice around any heat source. Second, sun and open air. A spot that gets sunlight and a breeze will always dry better than a shaded, still corner. Third, good drainage. Avoid low spots where water pools after rain or where snowmelt collects, because that standing water is the enemy. Fourth, convenience, because a stack you have to trudge through deep snow to reach in January is a stack you will start neglecting.
In Wisconsin specifically, a south-facing spot is your friend. We do not get a lot of winter sun, so giving the stack the best exposure we can, and keeping it open to the wind, matters more here than it does in sunnier climates.
Outdoor storage is the default for most people, and it works perfectly well when you follow a few basics. Here is the whole thing in plain terms.
Get it up off the ground. This is not just about keeping the wood clean. Bare ground pulls moisture straight up into the bottom of your stack. A firewood rack, a couple of pallets, or even a pair of pressure-treated rails will lift the wood a few inches and let air reach the underside. That gap matters more than people think.
Stack for airflow. Single rows dry better than wide, deep stacks because air can reach every piece. Keep the stack to a reasonable height (around four feet is stable and easy to work with) and position it so the cut ends of the logs face into the breeze. Remember, the ends are where moisture escapes, so open ends in moving air is the whole game.
Cover the top, leave the sides open. This is the rule people get wrong most often, so it gets its own section next.
The actual method of building a stable, good-looking stack (row stacks, cross-hatched ends, round stacks) is its own topic, and we cover it in a separate guide. For storage, the key point is simpler: off the ground, single rows, ends to the wind.
Yes, but only on top. This is the single most common storage mistake, and it is worth being crystal clear about.
Here is why it matters. When you wrap a whole stack in a tarp, top to bottom, you trap moisture inside. The wood cannot breathe, the wind cannot reach it, and any moisture still in the wood has nowhere to go. On wood you are trying to season or keep dry, a full wrap works against you: it holds humidity against the wood and can grow mold. What you want instead is a cover over the top only, so rain and snow shed off, while the sides and ends stay open to the air.
A cover can be as simple as a tarp secured over just the top of the stack, a piece of sheet metal or plywood, or a purpose-built rack cover. It does not need to be fancy. It needs to shed water off the top while leaving the sides open. If you take one thing from this article, take this: even a wide board laid across the top of the stack beats leaving it fully exposed to the weather.
If you bought kiln-dried firewood, you paid a premium for wood that is already dry. Storage is just the job of keeping it that way, and here is the part almost nobody tells you: kiln-dried wood can take on moisture again if you store it wrong. We know, because we did exactly that.
In our first year, before we knew better, we set kiln-dried wood down in big open piles on the ground. The wood on top and around the outside stayed fine. But the wood buried in the middle and against the ground climbed right back up past 25% moisture. We checked it with a meter more than once, and that wood genuinely struggled to burn. We ended up re-running more than half of those piles back through the kiln.
So why does it do this? In plain terms: the kiln pulls out the natural oils and resins that act like a built-in raincoat, and it opens up the tiny pores inside the wood. That makes kiln-dried wood a faster sponge than slowly seasoned wood. Stored right, that speed is harmless, because the wood also dries back out quickly after a little rain. Stored wrong (on wet ground, in an airless stack, or sealed under a full tarp) it drinks moisture back in faster than you would expect.
The fix is the same story as the rest of this guide: keep it off the ground, cover the top, keep air moving. We store all our wood now on concrete, under cover, graded so water always runs away from it and never pools underneath. Do that, and kiln-dried wood stays every bit as good as the day it left the kiln. If you want the full picture on moisture, our guide on what seasoned firewood really means breaks down the difference between seasoned and kiln-dried wood.
Sometimes yes, and this is where kiln-dried wood has a real advantage. Green or traditionally seasoned firewood can carry insects and mold spores, which is why the usual advice is to keep firewood outside. But properly kiln-dried firewood has been heat-treated, which kills the bugs and mold. That is what our WDATCP certification (HT# 2019086) confirms. Clean, dry, heat-treated wood is genuinely safe to bring inside in reasonable amounts.
If you do store wood indoors, here is our honest ranking of where it does best, based on years of watching how wood holds up.
| Where You Store It | How Well It Holds | Why |
|---|---|---|
| Garage (best) | Nearly bulletproof | The door opens regularly, so air keeps moving, and indoor humidity is almost never high enough to matter. Kiln-dried wood holds at 15% here for years. |
| Wood shed | Excellent | Covered and off the ground with open sides for airflow. Purpose-built for the job. |
| Outside under a top cover | Very good | Nearly as secure, but exposed to your local humidity and any sideways rain or snow. |
| Damp basement | Use caution | Only if it stays dry. A basement that runs humid will slowly work against the wood. |
Indoor storage assumes clean, heat-treated kiln-dried wood. Do not bring green or untreated wood inside.
The short version: a garage is the safest home for firewood there is. If you have kiln-dried wood and a garage, that is where it belongs. A good firewood rack keeps an indoor stack tidy and off the floor.
Wisconsin throws a few specific challenges at a woodpile, and a couple of them surprise people.
In the dead of winter, frozen ground actually works in your favor. When the ground is frozen solid, it behaves a lot like concrete: it is not wicking moisture up into your wood. The real danger comes later. When spring arrives and all that frost thaws, the moisture in the ground has to go somewhere, and it comes right up into the bottom of any pile sitting on bare dirt. That thaw is exactly what got our first-year piles. If your wood is up on a rack or pallets, the spring thaw is a non-issue. If it is sitting on the ground, that is when it pays the price.
Snow is the other one. Cover your stack so that when snow piles up and then melts or slides off, it sheds away from the wood rather than dripping down through it. A cover that is secured and slightly sloped does this on its own. And summer humidity in Wisconsin, while real, is beatable: keep the ends of the wood exposed and the air moving, and the pile handles it. The worst-case scenario in humid weather is wood sitting in a big pile directly on the ground, which is the one setup this whole guide is built to talk you out of.
After years of delivering wood and hearing how it went, the same handful of mistakes come up again and again. Here are the big three.
Storage and stacking go hand in hand, but they are not the same thing. Storage is about where the wood lives and how you protect it. Stacking is the method of building a stable, breathable stack: how you lay the rows, how you build ends that do not topple, and which patterns give you the best airflow.
That is a full topic on its own, and we cover it in a separate guide dedicated to stacking method (row stacks, cross-hatched ends, round stacks, and how to keep a tall stack from falling over). For storage purposes, the three jobs from the top of this article are all you need: up off the ground, covered on top, air moving through.
Yes, but only on top. Cover the top of the stack to keep rain and snow off, and leave the sides open so air can move through and moisture can escape. Covering the entire stack with a tarp, sides and all, traps moisture against the wood and can cause mold.
Kiln-dried firewood is generally safe to store indoors because the heat-treating process kills insects and mold. A garage is the best indoor spot, since the door opens regularly for airflow and humidity stays low. Green or untreated seasoned wood should be kept outside, as it can carry pests and mold indoors.
Yes. Kiln-dried wood can reabsorb moisture if it is stored on wet ground, sealed under a full tarp, or left in an airless stack, and it takes moisture on faster than slowly seasoned wood. Stored correctly (off the ground, covered on top, with airflow) it stays dry and ready to burn.
Only over the top. A tarp secured across just the top of the stack is fine and keeps rain and snow off. A tarp wrapped down over the sides is a mistake, because it seals in moisture and blocks the airflow that keeps wood dry.
Store firewood off the ground, in a spot with sun and airflow, good drainage, and a little distance from the house. Cover the top and leave the sides open. In Wisconsin, a south-facing location with the log ends facing into the breeze dries and holds wood best.
Properly stored kiln-dried firewood holds its quality for years, especially in a dry garage or shed. Wood stored poorly (on the ground, uncovered, or sealed under a full wrap) can degrade or take on moisture within a single wet season.
Want wood that starts dry and stays that way? We deliver kiln-dried firewood across SE Wisconsin, ready to burn the day it arrives.
