This is a new sort of problem for me. My customer, a church, wants to change a roof from flat to slightly pitched (getting leakade into the rooms below, and looking for a longer-term solution). Conceptually, not a difficult problem: some tapered, add-ons to the top of the existing roof joists, and a new roof.
BUT, the newly-sloped roof has to be sealed to the existing stucco exterior of the building. This seam was, of course, a level line before, but will now be sloped, so there’s no way to use the old joint.
I’m not familiar with stucco. How do you cut in to make a new seam? or is there a better way than that? I’m sure that just cementing the new flashing to the outside of the stucco is going to fail in a few months, so that’s not an approach that I want to take.
Or do you think that there’s a way to make the existing roof more weather-proof? One of the problems is that right now there are puddles forming on the roof, due to poor framing or settling of the building, etc. They go away by evaporation, rather than by draining away!
Thanks fo any help
Bob Chapman
Replies
remove the stucco where the roof fastens to the building...
cut the stucco with a diamond blade...
flash above the roof line..
what's under the srucco???
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Well, of course, one of the interesting things is that I have NO IDEA what's under the stucco! I'm sure it's a wood-frame structure, but how well it was finished (drain wall, etc.), I have no way of knowing. I have not wanted to make any exploratory holes until I'm more sure about what I'm doing --- hate to open up something that I don;t have at least a pretty good idea about how I'm going to close back up again!
Thanks for your help.
Bob
Is this a free standing building?
Don't mess with the old roof overhangs. You already have (maybe) 4 finished fascias and soffits to the flat roof. Tear off enough of the old roof perimeter (just the sheathing and what ever the cover was/is) to allow a solid connection to the joists below and to the top plates. You could anchor a 2x10 or so all around and then frame up a HIP ROOF from there. There would be no need to mess with the stucco.
Now describe your situation in more detail if that solution will not work.
Yes, there are three finished overhangs, and the other side butts up to the rest of the building which has the stucco wall. At the top of that stucco wall is the main roof of the church with a large overhang. Getting into that to tie into the main roof framing could turn out to be a sizeable job, although It's an interesting thought that had not occurred to me -- these discussions are great for opening up new ideas for consideration! It might be possible to extend the main roof over this area, though at a reduced slope.
I'll have to give that more thought
Thanks
Bob