New Construction Windows vs. Replacement Windows: A Complete Comparison Guide

New Construction Windows vs. Replacement Windows: A Complete Comparison Guide

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Stew Broward
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Selecting the ideal windows for your house or renovation is no simple task. When you are building a new house or upgrading a house, the type of windows you choose will give a huge effect to your home’s overall look, feel, and energy efficiency.
 
When it comes windows, one of the most important decisions homeowners make is whether to invest in either new construction windows or replacement windows. At first glance, they may look alike, but these two window types bring differences in benefits, cost and installation.
 
Understanding the differences between replacement and new construction windows can help save you time, money, and headaches, while keeping your home comfortable and your energy bill low.
 
In this article, we will deep dive into the main differences, advantages, cost, and installation of new construction vs replacement windows.
 
By the time you’ve gotten through this article, you will have the information necessary to figure out which window option is the best for your home.

What Are New Construction Windows?

New Construction Windows vs. Replacement Windows: A Complete Comparison Guide
New construction windows are made for houses that are being built or remodeled. Because they are part of the initial construction process, they are commonly known as ‘new build windows.
 
These windows have a flange (a thin, flat part around the edges) to attach to the exterior framing of the house, making them a good fit for new homes or major remodels where the window frame and surrounding structure are also new or being rebuilt.
 
One of the most significant differences between new construction windows and replacement windows is the flange installation. This flange allows the window to be tightly secured in the home’s rough opening and provides a watertight seal when attaching siding and exterior materials around the window. The flange is a structural element on the installation as it fastens the window to the home.
 
So, when to choose new construction windows? If you’re constructing a brand-new home or doing major renovation work, new construction windows are typically what you want. They offer a clean and secure installation to enhance the durability of your home.

What Are Replacement Windows?

Replacement windows are, in contrast, made to fit into the existing window openings without needing significant alterations to the surrounding structure. Replacement windows do not feature a flange as new construction windows do.
 
Instead, they use a method called retrofit installation, in which the new window is mounted into the existing framework. The main benefit here is that replacement windows are more gentle and can even be installed without significant construction.
 
Replacement windows are ideal for homeowners who would like to upgrade existing windows for better energy efficiency, appearance, or functionality. They’re typically used in older homes that have windows that are outdated, drafty or damaged.
 
The installation may be slightly easier, but replacing windows can have tremendous performance gains with energy-efficient options, especially for homes with poor insulation or aging windows.

Key Differences Between New Construction and Replacement Windows

Knowing the difference between new construction and replacement windows can be beneficial when determining what fits your project. Here’s a rundown of the main differences:

Installation Method:

  • The installation process for new construction windows utilizes flange installation that attaches the window directly to the framing of the home.
 
  • Replacement windows utilize a retrofit installation, meaning that the window is being placed into the existing frame.

Structural Requirements:

  • New construction windows are best for new builds or major renovations.
 
  • Replacement windows are more suitable for homes with frames already in place that require removal and replacement with more efficient options.

Cost Comparison of New Construction Vs Replacement Windows:

  • Are replacement windows more affordable than new construction? New construction windows tend to be pricier. They require more extensive installation, often involving adjustments to the home’s framing and exterior.
 
  • Installation of replacement windows tends to be less costly as this process is less invasive. However, some customization may be needed depending on the size and style of your window.

Energy Efficiency:

  • Both window types can be energy-efficient, but new construction windows may have better insulation options, particularly when installed during a more extensive energy-efficient building strategy.
 
  • Replacement windows can also be very efficient. You’ll feel benefits of upgrading to replacement windows especially if you’re replacing older, drafty windows with modern, insulated options.
 
We’re done comparing costs and energy savings for window options, installation method and structural requirements. But you might still be asking, how do I know if I need new construction windows? Let’s dive deeper.

What to Expect During the Installation Process for New Construction vs. Replacement Windows

Realizing the differences between new construction and replacement window installation helps you understand how your new windows will be installed and what you can do to prepare.
 
  • New Construction Windows: New construction window installation is a more intensive job. Because these are installed while the building is being built, the framing around the window opening is sometimes altered or made to fit the window snugly. The window flange is secured to the framing, and these adjustments may also include siding and exterior materials around the window to create a weather-tight seal. These modifications will require a more lengthy installation time.
 
  • Replacement Windows: Replacement windows usually have a shorter and less invasive installation process. As these windows are fitted to existing frames, they usually only involve the extraction of the old window and setting a new one in the same frame. Since no major changes need to be made to the home’s structure, the process tend to be much less invasive as well as faster to complete.
 
 
Knowing the differences between the two different installation process can help you prepare and have realistic expectations with your timeline.

Can You Use Replacement Windows in New Construction?

Although replacement windows are primarily meant for fitting into existing homes, they can still be employed in new construct situations. But it’s vital to understand the distinctions to see whether it’s the right fit for your build.
 
New construction windows are usually used for new builds. They feature a flange that fastens the window to the home’s framing, providing a weatherproof installation. This makes them especially well-suited for new construction.
 
That said, replacement windows can also be used in new construction if the window frame is configured to accept a retrofit-style window.
 
However, since new construction windows include a flange designed specifically for secure attachment to the exterior of a structure, this option may not provide the same energy efficiency, insulation or sealing as new construction windows.
 
Using replacement windows in new construction may be possible, but it will often be at the cost of long-term performance. New construction windows tend to be a more durable, energy-efficient option and offer the best results.
 
Not sure which option is best for your project? Boelter Is Better is here to help you make a decision in choosing the right windows for your home. Knowing how long your windows may last can help you manage your home improvement budget.

How Long Do New Construction and Replacement Windows Last?

A major consideration when choosing between the new construction or the replacement windows is how long either one will last. Here’s how they compare:
 
  • New Construction Windows: These windows last longer since they are installed as part of the home’s structure, and the installation process allows for a more secure, weatherproof fit. New construction windows, when properly cared for and maintained, last 20–40 years depending on material and installation.
 
  • Replacement Windows: Replacement windows may run for decades, lasting between 15 to 30 years. They won’t last as long as new construction windows would, but they’re still a massive upgrade over older windows. If properly maintained, they can last for decades. This lifespan depends on the quality of the window material, and how well the window has been installed.
In either scenario, routine inspections and maintenance can increase your windows longevity.

Which Is Better: New Construction or Replacement Windows?

So, new construction vs retrofit windows? Which one you choose will really just depend on your needs, budget, and the scale of your project. New construction windows are likely your best bet if you’re building a house or doing extensive remodeling.
 
However, as a speedy upgrade or for homes with existing window frames still in solid condition, replacement windows can be a great and less costly alternative option.

Ready to Transform Your Home? Choose Boelter Is Better for the Right Windows Today!

The choice between new construction and replacement windows will affect the comfort and appearance of your home. Whether you’re constructing from the ground up or retrofitting an existing property, knowing the primary differences, benefits, and expenses can help you decide which is best for your circumstances.
 
Boelter Is Better has you covered for both window replacement & installation. No matter how big or small your project might be, our team can assist you in navigating through the selection process to ensure that you find the best windows to fit your needs.
 
For all your roofing, siding and window needs, call us today at Boelter Is Better!
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