Place scraps of wood underneath the edge of the upper piece to expose the nail flange of the piece that you are removing.
Removing aluminum siding to replace window.
In most cases your new window will be deeper than your old aluminum window.
Remove the pieces of vinyl siding from around the window area.
Extract nails keeping the vinyl pieces in place in order to prepare vinyl pieces to be removed.
Use a siding removal tool.
The old wood underneath may need more than a simple paint job.
But if done incorrectly it can lend a sloppy amateurish look.
By exposing the original opening full frame replacement allows for inspection and repair of areas.
Do not cut the vinyl off.
In the case of new siding you will need to cut the pieces to.
The windows had been replaced with aluminum siding windows that were just tacked on with roofing nails and not flashed to keep the water out.
This is an easy step but if you have a large window you ll need at least two people.
Caulking windows to give them a finished look inside and out and seal out leaks and drafts is a fairly common diy task.
Check the condition of the paint.
Simply remove the nails around the window using a pry bar and a hammer.
Check out the windows before removing the aluminum.
You can also cut the siding back far enough to reach the flange and then install.
Cutting the drywall and sill.
The wood will hold the upper piece of siding out of the way.
When you choose full frame window replacement existing windows or doors are completely removed down to the studs along with interior and exterior trim and occasionally some siding and the new window is installed in the opening.
If possible you can simply remount the siding or trim you pried loose before you removed the window or replace any pieces you removed.