Method for sealing flashing joints below flashing

A process for sealing a flashing joint comprising the steps:

• (a) providing an open frame structure comprising studs extending generally vertically from a first base element that resides proximate to a second base element where the two base elements define a flashing joint with the first base element above the flashing joint and the second base element below the flashing joint;
• (b) providing a first bather sheet having a length, opposing first and second primary surfaces, opposing first and second edges along the bather sheet length separated by a barrier sheet width, a first adhesive strip running along the length on the first primary surface proximate to the first edge and a second adhesive strip running along the length on the second primary surface proximate to the second edge;
• (c) applying the first barrier sheet to the open frame structure such that the first adhesive strip of the first barrier sheet is between the first barrier sheet and a building element below or extending from below the flashing joint and the second edge above the flashing joint so the first barrier sheet extends partially over the studs;
• (d) adhering the first adhesive strip to a building element below the flashing joint thereby sealing the first edge of the first barrier sheet to the building element that is below or extending from below the flashing joint;
• (e) providing and applying a second barrier sheet having opposing primary surfaces, a length and opposing first and second edges running its length over the studs of the open frame construction such that a portion of the second barrier sheet and its first edge at least partially overlaps the first barrier sheet with the second adhesive strip of the first barrier sheet between the first and second barrier sheets;
• and
• (f) adhering the first and second barrier sheets together with the second adhesive strip.