Joseph S. Duffy, O'Duffy Home Remodeling and Handyman Service
If you have single pane windows, you might consider upgrading to
dual pane vinyl windows. They can be installed in two different ways;
either full replacement, or retrofit.
The first two pictures are full replacement (when the walls are open, we
also add insulation... never open and close a wall without taking the
opportunity to add insulation!); and the next windows are retrofits.
Reframing for a new dual pane vinyl window
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Removing the single pane window panels, retaining the frame which is
inset into the stucco, in preparation for a retrofit.
The window slides in easily, and is caulked on the outside,
with some finishing work on the inside.