When shopping around for new windows, you’ll the terms “replacement windows and new construction.” Learning the difference between the two will help you make the right decision and could save you money.
The simplified difference between them is that a replacement window is designed to fit over the current window’s frame, while a new construction window is made to be attached to a newly built and installed frame.
New Construction Windows
New construction windows are required when there isn’t an existing window frame or when it is heavily damaged and needs to be ripped out and replaced. Because they are used when there isn’t trim or siding present, these windows come with a nail fin or flange. This is used to attach it to the newly built frame. For a home addition or new wall, your contractor will build the window frames as specified. This allows you to choose stock, new-construction windows because the frame is sized to accommodate them.
You can have them custom made, but you’ll also find them at most home centers. Buying stock windows will likely be limited in sizes, styles, and colors. Always ask your contractor for guidance before you buy.
Replacement Windows
Replacement windows don’t require flanges because they are designed to be installed over the existing frame. Because of this, it’s crucial to have structurally sound, damage-free window frames. If you can see that a frame has some outward visual damage, you may need some remediation work done.
Since they don’t require the removal of the exterior cladding, replacement window installation is much faster than new-construction windows. Most people are shocked to find out that an experienced installer can often replace all of the windows in a home in just one day.
Because a replacement window is designed to fit over the existing frame, you can expect to lose about an inch of glass area around the perimeter of the window.
Energy Efficiency
Both New-Construction and Replacement Windows can be highly energy efficient. If your window frames are in good condition and well-sealed, you should compare the window’s performance ratings. Double vs. triple pane, low-E glass, and manufacturing methods will affect a window’s effectiveness.
Compare the U-Factor rating, Solar Heat Gain Coefficient, Visible Transmittance, and Air Leakage. For more information on what these terms mean and how to determine value, visit: https://jantekwindows.com/using-thermal-performance-factors-to-compare-windows-and-patio-doors/
Cost
New-Construction Windows
A new construction window unit can be less expensive than a replacement window because it can be mass-produced in standard sizes and colors. And while the price of the window units is often cheaper, you’ll need to factor in the additional labor and material required to install them.
Replacement Windows
Replacement window units must be custom-made to fit, so the window unit itself can cost more than a standard, new-construction window. However, you’ll find that the labor cost and installation hours will be significantly lower.
The individual needs of your home and budget should always be a deciding factor.
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