The pursuit for sustainable, environmentally friendly and climate-neutral methods of constructing leads to an increasing acceptance of a material: wood, our only widely used building material that is truly renewably, and therefore also sustainable. In addition, the only building material that is carbon negative is timber, and the construction products made from it, such as cross laminated timber or CLT, which will be the main-focus of this thesis. Due to the hygroscopic nature of wood, cross laminated timber panels and other mass timber elements are facing various risks while construction - from volumetric changes and moulds or fungus to structural damage. With the new chapter of mid and high-rise timber buildings, the construction moisture safety risks are more emphasized. For this reason, a series of standardised on-site moisture safety activities must be carried out. To be more precise, the thesis analyses the influence of environmental exposure and fluctuation of moisture while longer construction time without the use of a temporary roof or scaffolding protection, primarily by surveying cross laminated elements on an ongoing project in Norway. The measured and collected data, namely the weather info and moisture measurements are evaluated and compared with the known upper safe moisture limit. With that in mind, future aspects and recommendations for building without the traditional roof protection are provided. Lastly, it is determined, if longer cross laminated timber construction without temporary protection and damage should be considered possible for all future projects and climates.
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