Replacement windows with no frames!
1. How would a flange-less, replacement window get flashed to a plywood buck?
2. I know windows can install with masonry clips to jack studs, but can a flange-less replacement window…and still get properly flashed to the WRB (in my case 1 1/2″ Dow XPS)?
Brand new (2018) Kohltech triple pane REPLACEMENT windows (no flanges) installed in existing (1995) Anderson Narroline PVC-wood core frames. Wood core frame is saturated. Replacement windows removed. Anderson frames removed. Rough opening exposed. No flashing (this was the job of the Anderson frames). 1 1/2″ Dow XPS foam (WRB) over sealed OSB sheathing (air barrier). 2×6 stud cavity 24 OC with HD fiberglass.
I have a solid building science background and read MANY GBA articles, but this one in particular is good:
The Anderson frames provided an integrated sill. Now that the frames are gone, I have replacement windows with no sill. I want to install these windows with as few parts as necessary and decided to go Outtie with a picture frame casement trim finish.
The article section “Outtie Window with a Plywood Buck” notes “Install peel-and-stick flashing to the sides and top of the window; flashing should overlap the window flanges (if any)…” These replacement windows do not have flanges. How would a flange-less window get flashed to a plywood buck?
Alternatively, I can get nailing fins from Kohltech for these replacement windows. That would solve “how to fasten the window to the WRB” issue and may be less labor than window bucks.
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