28 October 2026
By Roger Kennedy
roger@TheCork.ie
Kiln-dried firewood is a popular choice among homeowners across Ireland. It is easier to light than wet wood, provides more usable heat, and generally produces less smoke. Unlike traditionally seasoned firewood, which dries naturally over time, kiln-dried logs are placed inside a heated chamber where controlled temperatures and airflow remove excess moisture.
The process reduces moisture content to below 20%, allowing the logs to burn efficiently without additional drying. Less energy is wasted evaporating water, leaving more useful heat for your home.
Homeowners can choose from various types of kiln-dried firewood in Cork, including oak, birch and mixed hardwoods. OneStopFuel supplies kiln-dried logs across Ireland, offering convenient options for households with different heating needs.
Why does firewood need to be dried?
Freshly cut wood contains a lot of water, often more than 70% of its dry weight. Burning wet wood is inefficient because some of the energy released goes into evaporating trapped moisture instead of heating your home.
Wet logs are also harder to ignite and may smoulder rather than burn steadily. They generally produce more smoke and can contribute to soot and creosote deposits in chimneys and flues.
Traditionally, firewood is dried through seasoning, which involves stacking split logs in a sheltered, well-ventilated area. Depending on the wood species, weather and storage conditions, this process can take several months to two years or longer.
Kiln drying offers a faster alternative. Logs are placed in a specialised chamber where controlled heat and circulating air remove moisture more quickly. Although drying times vary, the process allows suppliers to achieve consistent moisture levels without relying on favourable weather.
In Ireland, wood logs sold in units of two cubic meters or less must have a moisture content below 20%, under requirements that took effect on 1 September 2026. Larger quantities are subject to different provisions.
Why choose kiln-dried firewood?
While freshly cut logs may be cheaper to purchase, drying them at home requires time, storage space and suitable conditions. Ireland’s damp climate can make this difficult, particularly during autumn and winter.
Kiln-dried firewood offers several advantages:
● Easier lighting: Dry logs ignite more readily and help establish a steady fire.
● Better heat output: Less energy is spent evaporating water, allowing more useful heat to reach your home.
● Less smoke: Properly dried logs generally produce less smoke, soot, and creosote than wet wood when burned correctly.
● Convenience: Kiln-dried firewood is ready to use without months of additional seasoning.
Although kiln-dried wood often costs more upfront, its low moisture content can make it a practical choice. However, properly seasoned wood with a similar moisture level can provide comparable burning performance.
Which kiln-dried firewood type is the best?
Different wood species have different densities and burning characteristics. Choosing the right type depends on whether you prefer quick ignition, sustained heat or a combination of both.
Ash
Ash is a versatile hardwood that provides steady heat and consistent burning performance. It lights relatively easily when properly dried and is suitable for everyday use in stoves and fireplaces.
Oak
Oak is a dense hardwood that generally burns slowly and provides sustained heat. It is a good option for households looking for longer-lasting fires without frequent refuelling.
Birch
Birch lights relatively easily and produces bright, lively flames. It generally burns faster than denser hardwoods such as oak, making it particularly useful for starting fires and generating heat quickly.
Alder
Alder is a relatively light hardwood that burns easily and provides steady heat. It burns faster than denser woods like oak or beech, making it a good choice for regular home heating.
Mixed hardwoods
Mixed hardwood firewood contains several wood species and can offer good value. Its burning characteristics depend on the combination, so check which woods are included and their moisture content before purchasing.
How to store kiln-dried firewood
Although kiln-dried firewood is ready to burn, it can absorb moisture again if stored incorrectly. This is particularly important in Ireland, where frequent rainfall and damp conditions can affect stored logs.
Keep firewood in a dry, sheltered and well-ventilated location. If storing it outdoors, raise the logs off the ground and protect them from rain while allowing air to circulate.
Avoid wrapping the entire stack tightly in plastic, as trapped moisture can encourage mould growth. A covered log store with ventilated sides is generally a good option.
Choosing the Right Firewood
Kiln-dried firewood is a convenient choice for Irish households that want reliable heating without spending months seasoning logs. Oak and beech provide sustained heat, while birch is useful for quicker ignition. Ash and mixed hardwoods are also practical options for regular use.
Before buying, compare the wood species, moisture content, quantity, and price. Choosing properly dried firewood from a reputable supplier and storing it correctly will help you get consistent heating performance throughout the colder months.