How D.I.Y. are replacement windows?
I've got 28 windows to replace in my house...mostly 31" x 60". I've done a lot of pretty involved projects (eg. built a screened in porch and just installed a prehung exterior door/framing etc).
Windows don't look like they'd be too hard to do but I'm curious about the time it will take. I know a pro with a crew can knock out 28 in a day or two but for a DIY'er what how long can I expect to spend on each window?