This report investigates the possibilities and difficulties with a courtyard floor in CLT-wood, an alternative to today’s concrete floor. The environmental issue and how to construct a sustainability construction are the main focuses. This report contains data and information from people with competence within this topic that has been collected through literatures and interviews. The main areas that will be looked up is the construction with CLT-wood and moisture damage. Since concrete can tolerate much more load, is an investigation required to find out what factors that need to be modified. A courtyard needs to be kept dry regardless of the material. However, wood doesn´t tolerate that much moisture compared to concrete and the consequences will be much more.Through researches and interviews some solutions with CLT-wood has been made. Several alternatives have been made that has a great potential to match the requirements for this kind of construction. CLT-wood and glulam will be the main focuses.Also, research about CLT-wood through a logistics perspective have been made. All those tasks from transport the material from the manufactures to assemble it on the construction site will be portrayed and then compared with the material concrete. Those tasks that are similar will then be compared through time and cost.