I am in the process of replacing some old double-hung windows with new units of the same model and size. The single unit just went off without a hitch, but the next one is two units with a mull. This is just a bit too heavy for me to heft alone, and the wife isn’t good at this sort of thing. I am trying to figure out how to do this install alone, and would like to run an idea by you folks.
I am wondering if there are drawbacks to removing the sashes until I have placed the frame into the RO. I can caulk, get it level, close to square and put a few temporary nails in. Then replace the sashes, do a final check for square, and finish nailing. I know removing the sashes is an extra step, but it will keep the weight managable. Are there any drawbacks I am missing? Thanks for the advice.
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I've installed quite a few windows with the sashes removed. Normally, I install the frames, and nail/screw them just enough to hold the frames in. I put the sashes in next, and check to make sure that the windows work properly. The key to replacement windows isn't level and plumb. It is straight and square. After everything is working properly, I finish nailing the window.
I caulk last, it's not uncommon for me to remove the sashes, and caulk the window while leaning out the opening(saves time messing with a ladder).
Thanks, that's what I was thinking. The frame is a little floppy until the sashes are back in, but after replacing them, it's just a regular installation. BTW, the mfg instructions call for running a bead of silicon caulk around either the RO or the back of the nailing flange so I really have to do that first, right?
the mfg instructions call for running a bead of silicon caulk around either the RO or the back of the nailing flange so I really have to do that first, right?
Yes.
In a replacement situation it is rare to tear down to the rough opening. In most cases, the replacement window are ordered to fit inside the existing window frame.
"I know removing the sashes is an extra step, but it will keep the weight managable. "
That's the way I prefer to install anything close to "heavy" ...
lighten the load and less risk of broken glass.
just make sure to set her plumb and square ... and plumb both ways ... side to side and in the wall plane ... shouldn't be a problem.
Jeff
Buck Construction
Artistry In Carpentry
Pittsburgh Pa
"in most cases, the replacement window are ordered to fit inside the existing window frame."
Yes, I see what you mean. In this case, I am replacing a couple of worn out units, and wanted them to match the rest of the windows in the room. The others are weather protected by the porch and are in good shape, so I opted to use exact replacements......thus I am tearing out everything down to the rough opening. I'm glad to hear that others minimize the weight by removing the sashes. I thought it would be ok, but wanted to be sure there are no pitfalls. You guys are great, thanks for the advice.