Replacement windows are defined as windows installed into a pre existing window opening while new construction windows are designed for homes that have yet to be constructed or used in the instances where an existing window has to be removed down to the studs of the walls before it can be replaced.
Difference between new construction and replacement windows.
Replacement windows have no nailing fins or flanges.
New construction windows are meant for clear openings in the house usually with no trim or siding in place.
You might think that new construction windows come at a lower cost since they re not the same quality as replacement windows.
New construction windows are used when a brand new home or a new addition to a home is being built.
Only after installation is the home s exterior completed.
Because replacement windows fit inside the existing window frame you end up with less glass therefore a smaller view.
Unlike replacement windows new construction windows need to be installed on the framing directly with the use of a nail fin frame.
New construction windows are built for new homes or home additions.
Replacement windows could still be used but new construction windows are often more substantial and will not reduce your view.
Another thing that differs between replacement and new construction windows is the cost.