One of the biggest decisions that homeowners make during a renovation project is choosing their new windows. There are so many factors to consider when selecting new windows, and each project is different. If the design involves framing a new wall, then the contractor will use new construction windows. Older existing windows can typically be upgraded with replacement window inserts. However, if there is a change in window style or size, or significant damage to the window frame, new construction windows are used instead. We’re here to answer some common questions about windows, and help you determine whether new construction or replacement windows are right for your home.
What is the difference between a replacement window and a new construction window?
While it may appear that new construction and replacement windows are very different from each other, they are actually the same windows with different finish details. The main difference is in the nailing fins, which are thin strips installed on the exterior edges of a window. Also known as a mounting flange, a nail fin frame provides a way to hold the window in place while the shims and screws are being installed to anchor it. When combined with flashing and a weather resistant sheathing the fins help prevent wind and water infiltration.
The design and construction of the main elements (framing and glazing) on both types of windows are exactly the same. New construction windows include the nailing fins, because they will be installed into newly-framed rough openings. Flashing, moisture barrier, exterior siding and trim are added after the new window is in place. This is one reason that new construction windows cost more to install.
Replacement windows are shipped without nailing fins, because they are installed in existing openings where the exterior siding and moisture barrier is already in place. There are two types of replacement windows:
Window Inserts
Insert replacement windows are installed within the existing window frames. The old window sash and hardware are the only parts replaced. Since they are essentially a frame within a frame, replacement window inserts will reduce the visible glass area. Window inserts do cost less to install because they preserve the existing window trim. However, they can only be used if the old windows are structurally sound aluminum or wood windows. Existing vinyl windows are not strong enough to support window inserts.
Before ordering replacement windows, it’s very important to make sure that the existing window frames are still square. All buildings shift over time, but too much movement can distort the window frames and interfere with windows working properly. If your old windows are stuck, or the latches are difficult to lock and components appear misaligned, then the frame may be out of square. Replacement window inserts are not suitable in this situation, and the whole window should be replaced.
Full Frame Replacement
With a full frame window replacement the old windows and trim are removed down to the studs before a new window is installed in the opening. Similar to new construction, a full frame replacement involves removing the interior and exterior trim, and sometimes the nearby siding.
Once the window opening has been completely exposed, your contractor can inspect the structure and repair any damage to the framing or drywall. This is especially important on older homes that are in generally bad shape, or if the current windows are leaking.
Can "new construction windows" be used for replacement?
Yes! New construction windows are not just for new homes. They are ideal for replacement window projects as well. In fact, new construction windows are more energy efficient than replacement windows. While replacement windows are set into the existing frame, new construction windows include a new frame. During installation, gaps between the window frame and walls are sealed with foam insulation for a more air-tight fit.
If your renovation project involves removing the home’s exterior siding, you’ll have rough openings and can use a new construction window with a nail fin. For a replacement project that won’t expose the wall’s framing, you can remove the nail fins from new construction windows to make them fit existing wall openings and window frames. This makes ordering windows a bit easier, since on a complex renovation you can order only new construction windows and just remove the nailing fins as needed.
What to Consider When Choosing Windows
Choosing windows for your replacement project can be complicated; owners of older homes especially should be concerned about the integrity of their existing window frames. Even in newer homes, vinyl windows can fail and cause water damage. Before you shop for windows, consider the following:
Your Home’s Age and Existing Materials
The age of your home is a very important consideration when choosing between new construction and replacement windows. If you live in a historic home it may need extensive repairs around the window openings. If this is the case, new construction windows are the best choice.
It’s also important to choose replacement windows that match the home’s original design. Modern window materials like fiberglass and aluminum are available in traditional styles, and they last decades longer than wood or vinyl. For newer homes, your focus may be on improving energy efficiency and convenience while updating the look of the home.
Window Replacement Budget
Your construction budget is a critical part of planning a window replacement project. New construction windows are typically more expensive to install than replacement windows, but they may be necessary if your existing window openings need repair. If you have a limited budget, replacement window inserts are a more cost-effective option. The best plan of action is to have your installer inspect your existing windows. Then you can order replacement inserts for window frames that are in good condition, and new construction windows where structural repairs are required.
Energy Efficiency
Compared to most windows in older homes, new replacement windows will greatly improve energy efficiency. If your window openings have major issues with draftiness or water leaks, consider buying new construction windows. Replacing the entire window frame with a new nailing fin, moisture barrier and flashing will resolve those problems. However, old window frames can be re-sealed and weather-proofed, so investing some of your budget in minor repairs might make it possible to use less expensive window inserts instead. Speak honestly with your installer about all the options to get the most out of your budget.
Design Options
Design choices for replacement window inserts are limited by the size and shape of the existing opening. However, you can update your home with new frame colors, and add or subtract window grids or muntins.
New construction windows offer a wider range of design options because the window opening can be altered to fit. Change double hung windows to casements, create a larger opening for a picture window, or add a transom window for more light.
Installation
The installation process is also a key part of any replacement window 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.
New construction windows require tearing apart existing walls or even framing out new ones, which is time-consuming and messy. As with any construction project, it’s probably best to move out until the work is done. However, the additional cost and disruption caused by new construction is well worth it if you’re upgrading your home with beautiful new windows.
There is so much to think about when planning a window replacement project; meeting with your contractor or installation team early in the process will make a big difference. They can direct you to the replacement window products that are best for your home’s architecture and budget.
Shop for Replacement Windows at Ring’s End
Upgrade your home with new windows that will never need replacing! As the largest retailer of Marvin Windows in the Northeast, Ring’s End offers an extensive selection of designer windows and doors in our beautiful showrooms across the Northeast. Our free consultations make it easy to learn more about doors and windows for your home; or schedule an in-home appointment and we’ll come to you. Our team has the knowledge and expertise to help you find the perfect window style, size and finish. Ring’s End also offers direct window installation on both new construction homes and renovations. Click here for more information.