What is the effect of increasing the thickness of wall sheathing beyond the minimum requirement?

Increasing the thickness of wall sheathing beyond the minimum requirement can lead to enhanced resistance to external forces. Thicker sheathing provides a stronger structural component to the wall assembly, which can effectively support and distribute loads encountered from wind, seismic activity, and other structural stresses. A greater thickness allows for better load transfer and improves the overall stability of the wall system, thereby reducing the risk of damage or failure when subjected to lateral forces.

While it is true that improved thermal insulation may be a consideration for some materials used in sheathing, the primary direct benefit of increased thickness is related to structural performance rather than thermal properties. The notion of increased weight without additional benefit relates to the idea that while adding thickness can make the wall stronger, it may also add unnecessary weight if not matched to specific design needs. However, when carefully considered within the context of structural design, the benefits from the increased thickness can outweigh the drawbacks.