Sometimes there are little pieces of wood between the window and the wooden studs that hold the window tight.
Install a window without siding on wall.
Take the jamb size and sill height into consideration when planning the placement.
The newly installed window will need to be trimmed out with j channel or j molding before the siding can be reinstalled.
Proper installation of siding around a window requires.
Make sure the pivots are above the sash lifts.
Tilt the sash a little and align the metal pivots with the slots in the jamb liner closest to the exterior.
Fold the house wrap sides in staple them to the room side of the trimmers and king studs then slice off the excess on the inside of the house.
With window tape cover up all seams.
Nail into place either new siding ripped to size with your table saw or the existing siding if not overly damaged and install over the new window s flange to the edge of the existing siding.
Tilt up the sash and press outward on the jamb liner while you snap the top of the sash into place between the jamb liners.
Caulk any major voids.
To the edge of the window to about 1 past the outside seam.
Use a hammer or a drill to take out any nails or screws that are holding the window in place.
Fold the house wrap around the sides and staple them to the wall inside the room.