Hygroscopic material can moderate the indoor humidity variation due to its moisture buffering effect. This effect would change when used as interior finish mainly due to air exchange and wall moisture transfer. The author focused on clarifying the extent of the wall'’s influence on indoor moisture buffering and building humidity environment. A room model was established and the situation of no wall moisture transfer was simulated by adding a vapour barrier between the interior finish and the wall. Comparing this result with wall moisture transfer, the moisture buffering effect of the wall can be quantitatively analysed. The results verify that the buffering effect and the humidity environment, especially the seasonal buffering, change with the wall moisture transfer. The wall has great impacts on buffering in the cases of thin interior finish, high moisture production and low ventilation. Because the layer under the hygroscopic material also has buffering capacity, the difference of using various thicknesses of material is not obvious. Frequent ventilation reduces the buffering effect but improves the RH optimality.

吸湿性材料由于其缓冲水分的作用，可以缓和室内湿度的变化。当用作室内饰面时，这种效果会发生变化，这主要是由于空气交换和墙面水分传递。作者着重于阐明墙对室内水分缓冲和建筑物湿度环境的影响程度。建立了一个房间模型，并通过在内部饰面和墙壁之间添加防潮层来模拟没有墙壁水分传递的情况。将此结果与墙面的水分传递进行比较，可以定量分析墙面的水分缓冲效果。结果证明，缓冲效果和湿度环境，尤其是季节性缓冲，随着墙面水分的传递而变化。在内部薄的情况下，墙会对缓冲产生很大的影响，高水分产生和低通风。由于吸湿材料下面的层也具有缓冲能力，因此使用各种厚度的材料的差异并不明显。频繁通风会降低缓冲效果，但会提高RH最佳性。