Kiln Dried or Seasoned Logs: What is the difference?
- Feb 18
- 3 min read
Updated: Feb 19
When it comes to choosing the best firewood to heat your home, kiln-dried wood gives you guaranteed performance, whereas seasoned wood may be slightly cheaper but comes with less consistency and convenience.
The Core differences between Kiln dried and seasoned logs
Kiln drying is a precise process where firewood is subjected to immense heat, removing extra moisture yet keeping the natural qualities of the wood. It has a lower moisture content than seasoned wood, which means it burns hotter for longer. The Kiln dry process means that logs are uniformly dry to a moisture level of less than 20% from the core to the outer bark.
Seasoned logs by comparison rely entirely on the elements. Freshly cut logs are left to dry in natural weather conditions for often over a year or more. This can lead to inconsistent results, with some logs having higher moisture levels than others. Due to the nature of the drying process, there is also the possibility that bugs and bacteria can be living in your seasoned wood. The kiln drying process kills all of this, ensuring your firewood is safe and ready for home storage.
Burn performance and Heat efficiency
Kiln dried logs typically have a moisture content of between 10-15%, which means you will achieve superior heat output compared to using seasoned logs. The lower moisture content simply means the logs burn better, producing more heat and cleaner flames. When purchasing logs look out for the ‘Ready-to-Burn’ certification, confirming the wood has a low moisture content of less than 20%.
Seasoned logs, due to the varied moisture content can make them harder to light. The damp wood not only produces more smoke and harmful particles, but you are trying to burn off the water trapped inside. This means you are using energy to produce steam rather than the heat you need to warm your home.
The Cost Kiln dried vs seasoned logs
Calculating the cost of heating with wood is not the cost per log or per crate, but the cost per kilowatt-hour of heat you get in your home. Because kiln-dried wood has a reliably low moisture content, it burns far hotter and more efficiently. In practical terms, this means you'll burn through fewer logs to get the same amount of warmth compared to seasoned wood.
Energy Independence
Firewood offers a dependable source of warmth that doesn’t rely on the national grid. In the event of power cuts or energy supply disruptions, a wood-burning stove or open fire can continue to heat your home, a particular advantage in rural areas or during severe weather conditions.
Impact on your fire and chimney
Seasoned wood can often be wet or not dried properly, which tends to produce more soot and creosote than kiln dried wood, this can lead to costly maintenance of your chimney, flue or appliance. A chimney flue with heavy creosote deposits is a serious fire hazard and needs to be cleaned more often. This hidden cost of having the chimney swept more often could easily cancel out any savings you thought you could make by buying cheaper seasoned wood. The excess moisture and corrosive compounds released from burning damp wood can also damage your wood burning stove and over time can lead to costly repairs or the need for a replacement appliance.
The Environment/Sustainability
Kiln-dried logs are considered more environmentally friendly, as the more efficient burn means you’ll use fewer logs over time, lowering your overall consumption. Kiln dried wood with the ‘Ready to Burn’ certification is also compliant with UK Clean Air Strategy.
Conclusion overall
Kiln dried logs have a lower moisture content, give a cleaner burn, are an eco-friendly choice, immediate use, better value for money, higher heat output and overall better performance than seasoned logs
When you factor in efficiency gains and lower maintenance costs kiln dried wood is the overall winner to heat your home in a healthier, safer and efficient way.
All of our firewood is kiln dried to ensure it’s clean, efficient, and ready to burn. It’s dried to a low moisture content for an easy light, hotter burn, and less smoke. Our logs are Ready to Burn approved, so you can buy with confidence knowing they meet the highest standards for quality and performance.
Keep Your Home Warm With Janner Logs
Ready to enjoy the warmth, efficiency, and charm of firewood? Janner logs makes it easy to stock up with high-quality, kiln-dried logs. Click below to explore our range and keep your home cosy all season long.
