Bags of Hardwood Logs

Carnethy Woodfuel primary hardwood species

All our hardwood logs are sourced locally from Edinburgh, the Lothians and Borders and are seasoned for at least 12 months and sold with an average moisture content of 22%. We have chosen to sell hardwood logs only based on their excellent burning efficiency and heat output.

Our supply of wood has been sourced responsibly and is obtained primarily from dead or dangerous trees that require felling.

Hardwoods are generally better for burning than softwoods. As a rule of thumb hardwoods are produced by slow-growing deciduous trees and therefore the logs have a greater density than the faster growing softwoods from evergreen trees.

In summary, hardwoods tend to have broad leaves, while softwoods tend to have needles and cones.

As a rule of thumb, wood which is well seasoned makes a distinctive ‘clack’ rather than a dull ‘thud’ when knocked together. It will also feel much lighter than an unseasoned log.

Other indicators of a seasoned log include the bark peeling away and cracking and splitting of the wood around the outside. It should be stacked off the ground with plenty of space between the logs to allow air movement and with the top covered to keep rain and snow out.

Seasoned wood should give you approximately 50% more heat than the equivalent unseasoned log.

Our hardwood logs that make up our bulk bags generally contain the following mixed species:

1. Beech

This makes a great well burning log although it does contain a high water content and can take longer to season than some other log varieties. Beech rarely throws sparks and makes good embers. Beech trees grow in a variety of different soil types and can grow up to 100 feet tall.  A mature beech tree develops a huge canopy which carpets the forest in a dense shade making it difficult for other seedlings to grow.

2. Birch

These logs burn fairly quickly but provide a good heat output, bright lively flames and a pleasant smell. Birch are usually small to medium sized trees that grow in lowland areas and have shallow root systems. These trees are probably best known for their unique bark

3. Sycamore

This common European tree makes a great wood burning log with a moderate heat output and good flame.

4. Oak

Generally considered one of the best hardwood logs which burns slowly and produces an excellent heat. The oak species consists of about 600 different types and can live for 200 years and grow as tall as 100 feet. The fruit of the oak tree is called the acorn. The trees start producing acorns when they are 20 years old. By the time the tree reaches 70-80 years old, the tree will be producing thousands of acorns

5. Rowan.

This tree produces lovely red berries in the Autumn producing slow well burning logs.

6. Ash.

Widely regarded as the most efficient burning wood type, with low smoke and an excellent flame pattern providing plenty of heat and little residue. A freshly cut piece of ash has a moisture content only slightly higher than seasoned ash.  This allows the ash tree to be safely used immediately after harvesting.

Never use wet or unseasoned (green) wood as this will cause a lot of smoke and a very disappointing fire. It could quickly result in the build up of soot and creosote which could easily cause a chimney fire.

Burning wet or unseasoned wood will also reduce the effectiveness of a wood burning stove and very likely to result in a staining and blackening of the glass.