In a flashing system, a soaker channel has a drainage groove and has an upstanding wall, which is adapted to be overlaid by a lower edge of a flashing element. A lower wall of the drainage groove slopes downwardly, away from the upstanding wall, toward another upstanding wall, which is spaced from the upstanding wall adapted to be overlaid by a lower edge of a flashing element and which has a returned limb closing off the soaker channel partially. The soaker channel has a rib, which projects dow...