Quote History Quoted:There has to be code for this interface, OP would do good to figure out what it is. I'm sure some members here know where to look.
Don't let them smear some sealant and walk away.
Example of one way to flash the area. Again, having the code will help make sure the builder fixes it correctly and puts the leverage in your hands if he knows you know the code.
https://i.imgur.com/29j6X2x.jpg View Quote
That diagram is pretty accurate to code, showing Z-flashing and air gap (min 1” nominal) and brick ledge, but doesn’t show weep holes.
With an improper air gap, buttered mortar can dam the air gap between the brick and sheathing, prevent water from using gravity to go down and out, and water always finds a way through. If there’s no weep holes, that’s another issue altogether. Flashing isn’t “sealed”, so weird forces driving water (ex: pressure washer), can drive water up and over the brick sill, and even the top plate, or beneath and through the siding. Again, water can do weird things, when driven, even when the the media was installed correctly.
I’ve had homeowners complain about leaking French doors, and when they showed me how it was happening, they were blasting it with a pressure washer from 6” away. No shit, your weather stripping isn’t going to stop that.