Patent ID: 7290379

Claim:
A method of installing a portal in a wall opening of a wall, the opening being defined by a sill and jambs extending from the sill to define corners with the sill, the method comprising: providing a laminar sheet of a moisture barrier material against the outer surface of the wall, the laminar sheet being folded into the opening such that a portion of the laminar sheet at least partially covers the outer surface of the wall and folded portions of the laminar sheet at least partially cover the jambs and sill; cutting the laminar sheet at the folded portions at least partially covering the jambs; providing first and second flashings at the corners of the wall opening, each flashing comprising: a base member having first and second portions, each of the first and second portions defining an outer surface and an opposite inner surface, the second portion being disposed at an angle relative to the first portion such that the outer surface of the first portion is configured to be disposed toward the sill of the opening, the outer surface of the second portion is configured to be disposed toward one of the jambs of the opening, and the inner surfaces define a corner of the flashing; a front face plate extending from each of the first and second portions of the base member in a plane generally perpendicular to the first and second portions of the base member; and a plurality of channels disposed in the first portion of the base member; and inserting the second portion of the base member of each flashing at least partially through a respective cut in the laminar sheet such that the second portion is at least partially disposed between the laminar sheet and the wall and the first portion is disposed opposite the sheet from the wall.