Installing a replacement window in new construction scenario

carpentryinstallationrough-inwindows

I am replacing a wood window that was build in the early 1900's. The original installation was really odd, it was mounted in place by the trim boards. Two nails on the outside of the trim into a stud and two nails into the wood window frame were all that held it in place. I ordered a replacement window but before I install it I need to cover and seal the 2×4's that are in place, right? I am thinking I need to put some flashing over the studs and then put some 1×6 around the perimeter of the window, then install from there. Am I on the right path with this? I am fairly handy but this was my first window replacement so the installation curve ball is throwing me off.

I found the link below about a guy that has done this before but it seemed a bit confusing.

https://www.homesteadingtoday.com/threads/making-replacement-windows-into-new-construction-windows.152909/

enter image description here

enter image description here

Best Answer

I wish this board would let me say this, but a mod deleted one of my posts recently for being too short. However, here's the answer -

Yes

Flash the framing with some wide flashing tape, and build you a frame FOR THE NEW WINDOW, not the frame where it's going. That make it easier to install the replacement window to your liking. Just shim your new frame square (plumb/level it if possible, but not necessary), and install the new window with the screws provided.

If this is your first, make sure to tighten the mid-frame shim knobs, or shim the middle of the replacement window to where the sashes run snug.