How to retrofit block frame window into stucco (zone 2B)?
We are considering upgrading windows in a Tucson condo. Our neighbors with identical layout and construction just had their windows replaced, and I watched the process for a while. I’ve casually read some articles @ GBA, BSC, and JLC, and I don’t recall anything about a) retrofitting and b) into stucco. The process the installers used does not represent anything I remember being recommended.
I’ll try to attach a picture, but basically after taking the old window frames out, the wall is just 2x, thin tar paper, about 1” of EPS rigid foam, and then stucco. The window installers then placed a “block frame window” (no flanges of any sort), screwed thru the window frame into 2x, and then just caulked inside and outside. So…no pan flashing, no end flashing, no back dam or slope, no nothing. I have no experience in this area, and I’m from the Michigan (no stucco construction, very different climate).
Question: is a close fit and caulking enough, given the hot dry climate, and no windows facing north?
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