The total you get is how much you ll need to cut off the siding.
Cutting siding away to remove an exterior windows.
Remove the pieces of vinyl siding from around the window area.
Then subtract that amount from the length of the piece of siding you re going to cut.
Caulk the new one in using some good urethane sealant and hope that it never fails and that water never gets behind the siding at any point above the window.
Pry away from the wall to lift the trim and loosen the nails holding the trim in place.
The third option is to cut between the side of the window frame and the edge of the.
Remove all the trim from the wall having the siding replaced.
Use this tool by inserting it where a piece of vinyl overlaps a piece below it and then sliding it across until you reach the end of the piece.
Measure the length of the section of wall you re covering with siding.
Extract nails keeping the vinyl pieces in place in order to prepare vinyl pieces to be removed.
Slip the curved end of a vinyl siding zip tool into the seam between two horizontally interlocking runs of siding that you need to remove.
Work the pry bar along the entire length of trim.
Use a siding removal tool.
Wedge the pry bar under the trim.
You can also cut the siding back far enough to reach the flange and then install new trim around the new window.
If you re intent on disregarding standard installation procedures then use a reciprocating saw to carefully cut around the edge of the window in order to get it out.