I've recently been getting estimates on replacing old wooden windows
in one room in my house with fiberglass replacement windows. The
original windows aren't in great shape and probably are not worth
fixing. I've discovered that window installers mark up the windows
anywhere between 20% and 40% over the lumber yard for the exact same
product, so I'm thinking about just doing this myself. The window
frames are still in good condition, so I'm planning to install
"slip-in" type retrofit windows.
I've never done this before, so I have a couple of questions: 1) Is
installing these types of windows difficult, and what is involved? Do
they generally mount into the frames with screws, or how do the window
units attach to the frames? 2) I have two old wooden casement
windows, which will be easy to remove because they are installed with
hinges. But I also have one wooden fixed or "picture" window in the
middle that needs to be removed. I have no idea how this sash is
attached to the frame--with glue? How difficult is it going to be to
get the fixed window out, and am I going to do damage to the frame
trying to get it out?
Thanks in advance to anyone with any advice on this project.