In most cases this is highly unlikely when installed properly. However, even if the sheet was damaged and water got behind it, the air gap would prevent water from getting into the home by diffusing hydrostatic pressure build-up and providing a drainage path to the footing tile.

Because there is no direct soil contact with the wall, water just drains down to the footing and away through the drainage system.

The configuration of the dimple structure allows for continuous flow of water along the path of dimples and air gap to the footing drain and resists the transport of drainage water to the foundation wall.

The “conical” shape of the dimple provides a low resistance to vertical water flow and minimizes lateral movement of water, providing maximum protection of the foundation wall from moisture contact with the wall.