How to Tell If the Firewood You Bought in Lockport Is Actually Seasoned
By Dan Joel, Elite Sweepers Inc.
Wood sold as seasoned is not always seasoned. It is not necessarily anyone being dishonest either. The word has no enforced definition, and a stack that was split last spring and sold in September has genuinely been drying, just nowhere near long enough. The difference between that wood and properly dry wood shows up directly in your flue.
Why moisture content matters so much
The short answer: energy spent boiling water out of the log is energy that never becomes heat, and the resulting cool smoke deposits creosote.
Freshly cut wood carries a great deal of water. Burning it means the fire has to drive all of that moisture off before the wood itself can burn properly, and that consumes a large share of the energy the log contains. The practical result is a fire that produces less heat and burns at a lower temperature. Cooler smoke rising through the flue condenses on the walls instead of exiting as vapor, and what condenses is creosote.
That is the whole mechanism. Wet wood does not merely burn poorly, it actively coats your chimney faster. Two households burning the same number of fires can end up with completely different flues depending on nothing but the wood.
Four checks you can do in the driveway
The short answer: look at the ends, feel the weight, knock two pieces together, and check the bark.
- The cut ends. Seasoned wood develops cracks radiating outward from the center of the cut face, like spokes. Smooth, uniform end grain with no checking usually means it is still green.
- The weight. Dry wood is startlingly light for its size. If a split log feels heavy and solid in the hand, that weight is water.
- The sound. Knock two pieces together. Seasoned wood makes a sharp, hollow crack. Green wood makes a dull thud.
- The bark. On well-seasoned splits the bark is often loose and comes away easily. Bark still gripping tightly points to wood that has not dried through.
A moisture meter settles it definitively if you want certainty, and they are inexpensive. Split a piece and measure the freshly exposed inner face rather than the outside, since the exterior always reads drier than the core.
How long seasoning actually takes
The short answer: most hardwood needs a year, and dense species can need longer.
The clock starts when the wood is split, not when the tree came down. A whole log dries very slowly because the bark holds moisture in. Split, stacked off the ground with air moving through it and the top covered while the sides stay open, most hardwood is ready in a year. Oak is famously slow and often wants two. Softer species dry faster but give back less heat per piece.
This is why buying firewood in autumn for that same winter is a gamble, and why buying a year ahead is the single easiest improvement most households can make.
What burning wet wood does over a season
The short answer: it accelerates buildup, and heavy buildup is what chimney fires need.
Creosote progresses through stages, from a light flaky deposit that sweeps out easily to a hard, tarry glaze that is far more difficult to remove and far more dangerous. Consistently burning wet wood pushes you toward the harder end of that range faster. A flue that would have been a routine sweep becomes a more involved job, and in between it is carrying more fuel than it should. Our DIY chimney maintenance guide covers how to store wood so it keeps drying rather than reabsorbing moisture once you have it home.
What good wood does not replace
The short answer: the annual sweep.
Dry wood slows buildup considerably. It does not stop it, because any wood fire deposits something. The annual chimney sweeping visit is still what keeps the flue clear, and a chimney inspection is what tells you the condition of everything you cannot see from the room.
For local scheduling, see our chimney sweep service in Lockport, with costs on our pricing page. Elite Sweepers Inc is insured and bonded, works seven days a week from 7 AM to 7 PM, and gives you the price before we start. Call (708) 432-3977.
Firewood Questions
How long does firewood need to season?
Most hardwood needs about a year after splitting, stacked off the ground with air circulating through it. Oak commonly needs two. The timer starts when the wood is split, not when the tree was felled.
What is the best way to store firewood?
Off the ground on a rack or rails, with the top covered against rain and snow but the sides left open so air moves through the stack. Wood stored in a sealed pile or tarped all the way down will hold moisture instead of losing it.
Can I burn wood that got rained on?
Surface wetness dries off quickly and is not a problem if the wood was properly seasoned underneath. Wood that has sat exposed for a long period can reabsorb moisture more deeply, which is why covering the top of the stack matters.
Which firewood is best for a fireplace?
Dense hardwoods such as oak, hickory, maple and ash burn longer and give more heat per piece. Whatever the species, dryness matters more than the type, since wet hardwood will underperform dry softwood.
Is a moisture meter worth buying?
For anyone burning regularly, yes. They are inexpensive and remove the guesswork. Split a piece and measure the freshly exposed inner face, because the outside of a split always reads drier than the core.
Does burning dry wood mean I can skip the annual sweep?
No. Dry wood slows creosote buildup considerably but does not eliminate it, and the sweep also clears debris that entered from outside. The annual visit stays necessary regardless of wood quality.
Why does my wood hiss when it burns?
Hissing or bubbling at the cut ends is moisture being driven out of the wood by the fire. It is a clear sign the wood is not seasoned, and that fire is producing less heat and more creosote than it should.
Can I burn wood from a tree that just came down in my yard?
Not that season. Freshly felled wood is at its wettest and needs to be split and stacked to dry for a year or more first. Burning it green is one of the fastest ways to load a flue with creosote.
Published September 13, 2026