| Project | Average Cost (Installed) | Energy Payback | | :--- | :--- | :--- | | Vinyl double-hung window (mid-grade) | $600–$1,200 each | 10–15 years | | Fiberglass entry door (pre-hung) | $2,000–$4,500 | 8–12 years | | Sliding patio door | $2,500–$5,000 | 12–18 years |
Windows and doors are critical envelope components in any building. Over time, seals fail, frames rot, and glazing technologies become obsolete. Replacement is not merely an aesthetic upgrade; it is a high-ROI investment in energy conservation, comfort, and property value.
This item covers the removal of existing windows and doors and the installation of new, energy-efficient vinyl/fiberglass/aluminum clad units. Work includes ensuring structural integrity of openings, providing weather-tight seals, interior trim casing, and exterior finish coordination.
: Look for drafts, water leaks, condensation between panes, or poor operation (sticking). Full-Frame vs. Retrofit :