How Do Dimple Patterns Support Water Flow?

The raised dimple pattern forms interconnected air and drainage spaces behind or beneath the board. When water reaches this layer, it can enter the channels and travel downward or toward designated collection points. This arrangement helps prevent moisture from becoming trapped directly against structural surfaces. The dimples also provide structural spacing between the board and adjacent materials. Depending on the design, their geometry can support drainage capacity while helping the board resist compression. Effective water movement ultimately depends on correct installation, outlet positioning, surrounding soil conditions, and the overall drainage system design.
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