What’s the difference between Seasoned, Unseasoned, and Kiln-Dried Logs?

Freshly cut logs are high in moisture — often over 50%. This means they are hard to burn, produce more smoke, and deliver less heat.

Stored and dried naturally over time, seasoned logs typically have a moisture content of 25-50%. While they burn better than green logs, the drying process can vary, so moisture levels aren’t always consistent.

Dried in a controlled environment, such as a kiln, to achieve moisture levels below 20%. This means maximum heat, minimal smoke, and better efficiency. Kiln-dried logs also produce less smoke and soot, keeping your log burner and chimney cleaner.

UK laws require firewood sold in volumes under 2m³ to have a moisture content of 20% or less. By choosing our kiln-dried logs, you’re compliant with these regulations and supporting cleaner air.

At Cornish Firewood all our kiln dried logs have an average moisture content of less than 20%.

At Cornish Firewood we use heated drying rooms and a kiln heated using a biomass boiler, resulting in all our kiln dried logs having an average moisture content of less than 20%, and often even lower!

Get in touch and we’ll be delighted to advise what wood fuel is best for your burner method and budget.

To find out more, visit our FAQ at www.cornishfirewood.co.uk/faq/