Remodeling the 1930s wood-framed building we live in, and ready to make new openings to install new windows. It's difficult to describe how the walls are so I made a diagram below.

unusual wall windows

Basically, from outside to inside: T1-11 siding nailed to OSB, nailed over original clapboard and tar paper, nailed to original balloon framing, which is gusseted to a newer 2x4 interior wall that was added at some point.

There is essentially no overhang from the roof at all, so the new windows will get a lot of water. I've purchased a few new construction windows, which have nailing flanges. Assuming I can make these work, but not sure. After internal framing, I'm considering:

  1. Cut rough opening
  2. Cutting back just the T1-11 back to make room to nail the flanges directly to the OSB (which will be backed by new framing where needed)
  3. Apply flashing/flex tape to sill
  4. Coerce/wedge a drip cap wedged under the T1-11 at the top.
  5. Install, nail up and caulk the window
  6. Trim to make it nice.

Considering another approach, but not sure. Might be easier because I could install the windows from the inside. After internal framing:

  1. Cut rough opening, with room as needed for new exterior sill and jambs
  2. Install new exterior sill, jambs, and drip cap, to waterproof the opening; aluminum or similar
  3. Install some form of molding/stop to then take the window from the inside, after removing nailing flanges
  4. Put the window in, make it nice, caulk and foam, etc

SO- Will either approach work? Or is there a door number 3 I should be thinking about?

  • 1
    Remodel windows without a flange are quite common and may be much easier it is basically your #2 option but you would need to frame them in. – Ed Beal Jul 9 '20 at 22:03
  • Welcome to Home Improvement. Well done for your first question! While you're waiting for an answer, browse through the help center to learn how to make the most of the site. Also, wouldn't that be "window number 3"? :) – FreeMan Jul 10 '20 at 14:37

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.