When undergoing a home improvement project, many homeowners are faced with deciding whether to use new construction windows or replacement windows. While each project is unique, understanding the differences between these types of windows will help you make the best decision for your home.
New Construction Windows
New construction windows are virtually the same as replacement windows except that they come equipped with nailing fins (also known as mounting flanges or nailing flanges)—thin strips that extend from the window's exterior edges. These fins allow the window to securely attach to the house's framing during construction. When combined with flashing and a weather-resistant barrier, fins help prevent wind and water infiltration, ensuring a tight seal.
New construction windows are installed in newly framed rough openings. After the window is secured, the flashing, moisture barriers, exterior siding, and trim are added. This installation process is one reason new construction windows often cost more to install.
Can new construction windows be used for replacement projects?
Yes! New construction windows aren’t just for new homes and can be used in replacement projects, especially when the existing drywall or frames are in bad shape or a full-frame replacement is desired. Using new construction windows allows for the replacement of the entire window unit, including the frame, which can improve energy efficiency and address issues like drafts or leaks.
If your home renovation involves removing the home’s exterior siding or stucco or replacing windows down to the studs, new construction windows with nailing fins are appropriate. In some cases, the nailing fins can be removed from new construction windows to fit them into existing openings, providing flexibility in complex projects. This approach simplifies ordering, as you can purchase new construction windows and adapt them as needed.
Replacement Windows
Replacement windows are designed to fit into existing window openings without disturbing the surrounding trim or siding. They are shipped without nailing fins because they don't need to be nailed to the framing. Instead, they are secured within the existing window frame.
There two types of replacement windows are explained below.
Insert Replacement Windows
Insert replacement windows, sometimes referred to as retrofit windows, fit inside the existing window frame. Only the old window sash and hardware are removed and replaced. This method preserves the interior and exterior trim, reducing installation time and cost. However, because it is essentially a window within a window, it slightly reduces the visible glass area.
Insert replacements are suitable when the existing window frames are in good shape—square, level, and free of rot or damage. They are not recommended for vinyl windows, as vinyl frames may not be strong enough to support the insert.
Before you use replacement windows, it’s crucial to ensure that your existing window frames are still square. Buildings can shift over time, and excessive movement can distort frames, affecting window operation. If your old windows are stuck, the latches are difficult to lock, or components appear misaligned, the frame may be out of square. In such cases, insert replacements are unsuitable, and a full-frame replacement is recommended.
Full Frame Replacement
With a full-frame replacement, the entire window—including the frame and trim—is removed down to the studs. A new window is then installed in the opening. This method is similar to installing a new construction window and allows for a thorough inspection and repair of structural damage.
Full-frame replacements are ideal when the existing window frames are damaged, out of square, or when a different window style or size is desired.
What is the difference between a replacement window and a new construction window?
While they may seem vastly different, new construction and replacement windows share many similarities—they are essentially the same windows with different installation methods. The primary distinction lies in the presence of nailing fins.
What to Consider When Choosing Replacement Windows
Choosing the right windows for your project involves several considerations explained below, including details about your home, your vision for the design, and your budget.
Your Home’s Age and Existing Materials
The age and condition of your home are crucial factors. Historic homes may require extensive repairs around window openings, making new construction windows a better choice. It's also important to select windows that match your home's architectural style. Modern materials like fiberglass and aluminum offer durability and can mimic traditional designs, lasting decades longer than wood or vinyl.
Window Replacement Budget
Your budget plays a significant role. Replacement window inserts are generally more cost-effective due to lower installation costs. However, if your existing window openings need repair, investing in new construction windows or full-frame replacements may be more economical in the long run. The best plan is to have your installer inspect your existing windows. Then, you can order insert replacements for frames in good condition and new construction windows where structural repairs are required.
Energy Efficiency
Replacing old windows can significantly improve your home's energy efficiency. New construction windows allow for better insulation around the window frame, reducing drafts and heat loss. If your existing frames are in good condition, replacement windows can still provide energy savings, especially with energy-efficient glass options. Old window frames can also be re-sealed and weather-proofed, so discuss all options with your installer to maximize your budget.
Design Options
Replacement window inserts are limited to the size and shape of the existing opening but offer various styles, colors, and grid patterns. You can update your home with new frame colors and add or subtract window grids or muntins.
New construction windows provide more flexibility, allowing you to change window sizes and styles or add new features like picture windows or transoms for more light.
Window Installation Process
The installation process is a vital part of any window replacement project. Installing replacement window inserts is less disruptive, faster, and less expensive. The mess is minimal, so you won’t have to leave your home, and some handy homeowners may have success DIY-ing this project.
New construction windows require more extensive work, potentially involving interior and exterior wall modifications, and professional installation is recommended. This process is time-consuming and messy, and it might be best to vacate your home until the construction project is done. However, the additional cost and disruption can be worthwhile if you’re upgrading your home with beautiful new windows.
There is much to consider when planning a window replacement project. Meeting with your contractor or installation team early in the process will make a big difference. They can assess your current windows, discuss your goals, and guide you to the replacement window products that are best for your home’s architecture and budget.
Shop for Replacement Windows at Ring’s End
Whether you need a window insert, full-frame replacement, or new construction window, Ring’s End offers an extensive selection of high-quality windows and doors in our beautiful showrooms across the Northeast. Our free, in-home consultations make it easy to learn more about doors and windows for your home.
The window experts at Ring's End have the knowledge and expertise to help you find exactly what you need — visit a showroom today or schedule your free consultation for personalized assistance.