- Purchase a bulk bag of kiln-dried hardwood logs before 30th march 2026 and receive a free £10 voucher for Moel Famau Donkeys*
- Lead time: 7-10 working days
- 01352 746293
- info@jdlogs.co.uk
If you use a log burner, open fire, chiminea, or fire pit, the quality of the firewood you burn makes a huge difference to heat output, efficiency, and overall enjoyment. One of the most common questions we hear at JD Logs is whether there’s really that much difference between wet logs and dry logs. The short answer is yes, and it’s a bigger difference than many people realise.
In this guide, we’ll explain the real differences between wet and dry firewood, how moisture content affects burning performance, why dry logs are better for your stove and chimney, and how choosing the right logs can save you money while reducing smoke and emissions.
Before comparing performance, it’s important to understand what wet and dry logs actually are.
Wet logs, sometimes referred to as green or unseasoned wood, are logs that contain a high level of moisture. Freshly cut wood can contain 40–60% moisture, sometimes even more. These logs have not been dried for long enough or have been stored poorly, allowing them to absorb moisture from rain and damp air.
Dry logs are firewood that has been properly dried to reduce moisture content. In the UK, firewood is considered suitable for burning when its moisture content is 20% or less. Dry logs may be seasoned (air-dried over time) or kiln-dried, which is a controlled process that guarantees consistent low moisture levels.
All kiln-dried logs supplied by JD Logs are Woodsure Ready to Burn certified, meaning they meet strict standards for moisture content, efficiency, and emissions.
The biggest difference between wet and dry logs comes down to moisture content. When wood burns, heat energy is produced through combustion. If the log contains a lot of water, much of that energy is wasted simply evaporating moisture before the wood can burn properly.
This has several knock-on effects. Wet logs burn cooler, produce more smoke, and give off far less usable heat. Dry logs, on the other hand, burn hotter and more efficiently because almost all the energy released goes straight into heating your room or outdoor space.
Burning wet logs is usually frustrating and inefficient. They are difficult to light, often smoulder rather than flame, and create thick smoke. You’ll notice more popping, hissing sounds as moisture escapes, and a dull, weak fire that struggles to stay lit.
Dry logs behave very differently. They ignite quickly, produce a bright, steady flame, and give off consistent heat. Because there’s less moisture to burn off, the fire reaches optimal temperature faster and stays there with less effort.
In practical terms, this means you’ll use fewer dry logs to achieve the same warmth you’d get from a much larger quantity of wet wood.
One of the biggest problems with wet logs is the amount of smoke they produce. Wet wood burns inefficiently, releasing large amounts of unburned particles into the air. This smoke doesn’t just drift away outside; it also coats the inside of your stove, flue, and chimney.
Dry logs produce far less smoke, making them better for both indoor air quality and the environment. This is why the UK government introduced regulations requiring small volumes of firewood sold to be Ready to Burn certified.
Burning dry logs helps reduce harmful particulate emissions, supporting cleaner air and making your fires safer and more enjoyable.
Using wet logs regularly can cause serious long-term issues for your stove and chimney. When wet wood burns, it creates excess tar and creosote, sticky substances that line the inside of flues. Over time, this build-up restricts airflow, reduces efficiency, and significantly increases the risk of chimney fires.
Dry logs burn much cleaner, producing far less residue. This keeps your stove working efficiently and reduces how often your chimney needs sweeping. Many stove manufacturers also specify that only dry or kiln-dried logs should be used to maintain appliance warranties.
At first glance, wet logs can appear cheaper than dry logs. However, this is a false economy. Because wet logs contain so much moisture, you end up burning more wood to get the same level of heat.
Dry logs deliver more heat per log, meaning you need fewer logs overall. Over a full heating season, this results in better value for money, lower fuel consumption, and a more consistent heat source.
Kiln-dried logs, in particular, offer excellent performance because their moisture content is controlled and reliable, regardless of weather conditions.
Anyone who has tried to light wet logs knows how frustrating it can be. Fires struggle to catch, require excessive kindling, and often need constant attention to stay going.
Dry logs are much easier to light and maintain. They catch quickly, respond well to airflow adjustments, and allow you to control the fire more precisely. This is especially important for wood-burning stoves, where maintaining an efficient burn helps reduce fuel use and emissions.
Burning wet logs releases higher levels of fine particulates into the air. These particles can aggravate respiratory conditions and contribute to poor air quality, particularly in residential areas.
Dry logs burn more cleanly, producing fewer pollutants and less smoke. Choosing Ready to Burn firewood helps protect your household’s health while also reducing environmental impact.
At JD Logs, our firewood is sustainably sourced from responsibly managed British woodlands and kiln-dried using efficient processes, making it a cleaner, more environmentally responsible choice.
There are a few clear signs that your firewood may be too wet to burn properly. Logs that feel heavy, have visible moisture, or make a hissing sound when placed on the fire are likely too damp. Excessive smoke and difficulty lighting are also strong indicators.
For a more accurate check, a moisture meter can be used. Dry logs should read 20% moisture content or less when tested on a freshly split face of the log.
While seasoned logs can be dry enough if properly stored, their moisture content can vary depending on weather and storage conditions. Kiln-dried logs offer consistency and peace of mind. Because they are dried in a controlled environment, their moisture content is reliably low all year round.
This makes kiln-dried logs ideal for log burners, open fires, pizza ovens, chimineas, and fire pits, delivering dependable performance whenever you need it.
When comparing wet logs and dry logs, the difference is clear. Wet logs produce more smoke, less heat, and more maintenance issues, while dry logs burn hotter, cleaner, and more efficiently. Choosing dry, Ready to Burn firewood isn’t just better for your fire, it’s better for your stove, your health, and your wallet.
At JD Logs, we specialise in supplying premium kiln-dried logs that are Ready to Burn certified, sustainably sourced, and delivered directly to your door. Whether you need bulk bags for regular heating or netted bags for occasional use, we offer high-quality firewood you can rely on. Prepare for cleaner fires, better heat output, and less hassle this season. Shop online or alternatively call 01352 746293 or email info@jdlogs.co.uk. We’re always happy to help you choose the right firewood for your needs.
