New construction installation involves removing the existing window down to the rough opening, including the old frame (and often exterior trim), so the new window can be installed with a nail fin/flange and fully integrated into the wall system.

This installation method is ideal for homes with visible wood rot, water intrusion, or damaged framing around existing windows. It also works well for properties that require major upgrades to flashing, waterproofing, or overall wall conditions. It’s also a smart choice for homeowners who are already undergoing siding replacement or exterior remodeling and want the cleanest, “start fresh” installation approach.

This approach provides the best opportunity to identify and address hidden issues inside the wall, such as wood rot, moisture damage, or failed flashing, before they become larger problems. When properly flashed and sealed, it delivers strong, long-lasting weather protection and allows for full integration with new siding and trim for a cohesive exterior update.

‍This installation method typically requires more labor and time than other options and often involves additional trim and siding work, especially when exterior details are being updated or changed.

Retrofit installation (sometimes called “insert” installation) replaces the window inside the existing frame. The original frame stays in place, and the new window is installed within it. This method is faster and less invasive than full tear-out approaches.

This option works for homes with existing window frames that are solid and square, where homeowners want improved comfort and energy efficiency without the need for major construction. It’s a good choice for those who prefer to keep interior trim and exterior finishes largely undisturbed while upgrading their windowsfor better performance and an updated appearance.

This installation method offers a faster process with less disruption. In many cases it is also a lower overall cost option. By preserving existing interior trim and exterior finishes, it delivers noticeable improvements in comfort and energy efficiency without the need for a full remodel.

‍Because the new window is installed inside the existing frame, this approach can result in a slight reduction in visible glass area. It’s also not the best option if the original frame has rot, water damage, or structural concerns, since those underlying issues would remain in place rather than being corrected.

Block frame installation is a full-frame replacement method that removes the old window unit but typically does not require a nail fin. The new window is anchored directly into the opening using a block frame, then carefully sealed and finished to create a clean, weathertight fit.

This option is well suited for homeowners who need a full-frame replacement but want to avoid the extent of tear-out involved with new construction installation. It’s especially effective for homes with stucco, brick, or other exterior finishes where using a nail fin isn’t ideal. For many projects, it also delivers improved sealing and structural performance compared to an insert window approach.

This approach provides a stronger, more comprehensive replacement than retrofit installation in many cases, offering improved structural support and performance. It can enhance waterproofing and sealing without requiring full siding removal. At the same time, it helps correct issues around the old window unit while maintaining a clean, finished appearance.

‍This installation method is more involved than a standard retrofit installation, requiring additional labor and precision. The amount and type of finish work can vary depending on the exterior material and the condition of the existing window opening.