This article will show you how a tile wall detail is installed on a tile roof system. Keep in mind there are other methods used depending on what type of wall you are tieing into. In this example the roof detail will be lathed and stucco applied over the top. The roof flashings will be behind the lath and stucco. This is how a new constuction stucco home in Arizona would be done.
Your underlayment is installed and nailed, the underlayment type will vary. Typically a 30# organic felt is used this is the most common.
Next we install a J-pan metal and nail it to the wall over the top of the underlayment this metal allows water to run off the roof.
Next we are going to flash over the top of our J-pan with another metal called Z-bar.
Now we apply a waterproofing paper over the top of our Z-bar.
Our tile roof wall detail is now complete. Next we will lath and stucco our wall and lay the tile and the roof is correctly installed.
There are other methods to do wall details as well. This example was used because it’s a common method used in the southwest. Whatever method you use the principals are all the same. The underlayment always has a flashing over the top.