Many excellent books and articles have been published about log homes. Some focus on the aesthetics, style and decorating of log homes. Some focus on building methods -- from "build your own" to technical instructions. None examine the specific evaluation of log structures to build a high performance structure. This book is intended to provide industry-specific information that can serve as a solid reference for technical discussion. It can benefit presentations to code administrators or legislators to help folks understand the benefits of log building. It is intended to bolster adoption of ICC400 as the "Log Building Code" worldwide. The Peril of Log Building documents the course of action that has stymied the log home industry. It is a search for the answer that supports and explains the thermal performance of log walls. It provides a discussion of the elements of log home design and construction as established by ICC400 and why those elements are important. It includes worksheets as examples of those methods of evaluation.