I was going to link to the page on Dryvit Flashing but as it turns out I do not have one, so here it is. I have already went into depth on what a kickout flashing is and why it is so important to use them but other flashing is important too. It is surprising how often flashing is left off all together when it comes to EIFS (Exterior insulation and Finish System). I have seen it time and time again where the EIFS is taken down tight to the brick ledge and a bead of caulk applied.There is so many things that can go with his application I’m not even sure where to start.
With the system touching the brick ledge directly it is impossible for the bottom edge to have a cement coat on it, so we know that there is exposed foam on the brick ledge. Any moisture on the brick ledge is going to be absorbed into the exposed foam. A bead of caulk along the brick ledge when to system meets the brick is not enough to prevent moisture from getting through. The caulk does not work well in that application. The caulk is suppose to be an expansion with backer rod so it has an hourglass shape. That is how the caulking works best. With two points of contact. From my experience what happens with the caulk is that it pulls away from the stucco side because it is not utilizing the two points of contacts.
So, that what doesn’t work. Now lets talk about what does work. It is just good sense to put a brick ledge flashing on before you install the Synthetic Stucco. The stucco should be up off the flashing about three quarters of an inch. The moisture barrier on the substrate should come down right on top of the flashing.
With the flashing in place and an expansion between the metal and the stucco there is not chance for moisture sitting on the brick ledge to be absorbed by the system. The Exterior Insulation and Finish System should have drainage which would allow any moisture behind the system to drain out the bottom and onto the flashing and out over the brick.