Any log house or log structure that is going to be used as living accommodation should be made with logs that are laminated, or also known in the UK as being gluelam logs. When you see that a log building is made with gluam wood it means the logs from a tree have been cut in half and the center of the log in both halves is turned to the outside, then the two pieces are then glued together using a special process.By using this process the logs are at least 10 times stronger than it would have been if left as a solid block, this also ensures the logs are far more resistant to disease and insects. For those of you that are not familiar with timber the heartwood is the center of the tree and it is the oldest part of any tree, this wood is very hard and unlike the outside wood of a tree which is younger and softer. The wood from the outside of a tree is also more susceptible to disease and pests and is not as strong as the center. When you are looking for a log house or log garden building it is best to find one that has been made from heartwood.