Abstract: A roof flashing system providing first and second parallel troughs for containment of a caulking compound. More specifically, the invention provides a first reglet which is attachable to a wall and which forms a longitudinally extending trough in conjunction with the wall for containment of a caulking compound and a second reglet attachable to the first reglet and forming a second longitudinally extending trough in conjunction with the wall for containment of a caulking compound, the second trough being located above and substantially parallel to the first trough. Thus, upon attachment of the first reglet to the wall, a first caulking bead is formed in the first trough providing a seal between the first reglet and the wall, the bead being shaped and inspected as it is formed. The second reglet is then attached to the first reglet and forms the second trough. A second caulking bead is then formed in the second trough, the second bead being substantially horizontal and parallel with the first bead.