Kiln dried unsplit mixed hardwoods (alder, birdcherry & maple) 2.98 m3 loose, £92 per m3. Buy Firewood Direct kiln dried hardwood firewood 25cm round unsplit logs is a perfect choice for log burners and open fires as it burns hotter and longer than some other types of wood. Our Kiln Dried Un-split Hardwood logs bring together this longevity with the attractive appearance of being in their natural state. Being of a larger size they are especially good for larger open fires or outdoor bonfires or BBQs. Our kiln dried un-split firewood logs are often used for display purposes also as they have been carefully dried and have less than 10-20% moisture. They will release less residue than other logs, allowing you to use them indoors as part of your year-round fireplace display. You can also split them yourself to use for kindling or in smaller fires.