During which season does truss uplift typically occur?

Truss uplift typically occurs during the winter season. This phenomenon is primarily caused by the expansion of the roof trusses due to temperature changes and humidity levels. In winter, the temperature difference between the warm, heated interior of a home and the cold exterior can create a situation where the roof structure experiences upward movement.

As the warm air rises and is trapped under the roof, it can lead to a buildup of moisture in the wood framing, causing it to expand. When the temperature warms up during early spring, this effect often dissipates. In contrast, during summer, the heat does not maintain the same moisture conditions conducive to truss uplift, and consequently, this issue is generally less prevalent during that time. Understanding the seasonal impact on truss behavior helps in assessing structural integrity and planning for necessary maintenance or repairs, making winter the season when truss uplift is most likely to occur.