What is the implication of having too much moisture content in untreated wood?

Having too much moisture content in untreated wood primarily leads to a significant risk of decay. When wood retains excessive moisture, it creates an ideal environment for the growth of fungi, including molds and wood-decaying fungi. This biological activity can lead to deterioration of the wood's structural integrity over time, which can compromise the overall safety of the building. Consequently, it is crucial to monitor and control the moisture levels in wood to prevent decay-related issues.

In contrast, while increased combustibility, delayed drying time, and decreased thermal insulation are relevant concerns, they do not directly compare to the high-risk nature of decay associated with excessive moisture in untreated wood. Moisture content affects the wood's performance, but the immediate and severe consequence in untreated wood with high moisture levels is indeed the increased risk of decay.