Replacing the windows in your house is one project that will significantly reduce your energy consumption.  Properly installed, a quality replacement window will, quite literally, give an immediate return on investment by reducing your energy consumption during both heating and cooling seasons.


A new construction window is designed and manufactured to meet commonly specified sizes for new structures.  Typically, they will have a nailing flange with a J-Channel moulded into the outside frame so that they can be quickly installed in a newly framed structure.   Nails, or more commonly screws, are inserted through the slotted holes in the flange to secure the window frame to the structure. The J-Channel is designed to accept the exterior cladding (usually vinyl siding) that will be installed at a later time.


A replacement window is designed and manufactured to fit into an existing, older, frame opening after the previous window has been removed.  (They can also be installed in new structures)  An experienced installer must first measure the existing window opening.  A replacement unit is then custom, manufactured to fit that specific opening.  The windows are secured by screws inserted through holes in the outside frame rails in conjunction with trim pieces, placed around the perimeter of the window frame.