Windows
Replacement Windows
Replacement windows involve either installing a new unit within the existing frame or removing the entire old assembly down to the rough opening. The right approach depends on the condition of the original frame and your project goals. This work significantly impacts a home's energy performance and overall appearance.
Insert Versus Full Frame Window Replacement
Replacement windows involve a choice between an insert and a full frame installation. An insert window fits into an existing, sound frame, retaining original trim. This approach is quicker and less disruptive, but reduces glass area by about an inch on each side. It suits homes with good existing frames, like many postwar capes.
Full frame replacement means removing the entire unit to the rough opening. This is necessary when frames show rot or damage, common in pre-1940 homes such as triple-deckers. While more involved, it allows for proper air sealing and maximizes glass area.
The Process of Replacing Windows
Window replacement starts with precise measurements for each opening. For insert windows, sashes and stop trim are removed, leaving the main frame. Full frame projects entail removing the entire unit to the rough opening. The opening is then prepared, which includes cleaning, inspecting for integrity, and repairing any damage.
New flashing and insulation are installed to prevent water intrusion and air leaks. The new window is set, carefully shimmed to be plumb, level, and square. Finally, it is fastened, insulated, sealed, and new interior and exterior trim is applied, ensuring proper operation and weather protection.
Replacement Window Materials and Lifespans
Replacement window materials vary in aesthetics, performance, and lifespan. Vinyl windows, costing $650 to $1100 per unit installed, are energy efficient and low maintenance, lasting 20 to 30 years.
Fiberglass units, priced from $900 to $1500 installed, offer greater durability and resistance to weather, with a lifespan of 30 to 50 years. Wood clad windows ($1100 to $2200 installed) provide a wood interior and clad exterior for less maintenance, lasting 30 to 50 years. All wood windows ($1200 to $2400 installed) offer authentic appeal for historic properties, lasting 40 to 60 years or more with proper upkeep.
When Replacement Windows Are Necessary
Replacement windows are best when existing units have extensive rot, severe damage, or failed insulated glass units. If windows contribute to significant energy loss and are beyond simple repair, replacement is often practical. However, not all window issues require full replacement.
Minor drafts can be fixed with weatherstripping, and cracked panes can be reglazed. For historic weight-and-pulley sash systems in older homes, restoration may be a better choice to preserve original character. This involves repairing existing components, improving thermal performance with storm windows, and resealing, especially important in historic districts.
Cost of Replacement Window Projects in Southern New England
A typical window replacement project in Southern New England ranges from $9,000 to $24,000. This covers 12 to 20 openings with vinyl or fiberglass double hung units, installed. Material choice significantly impacts cost: vinyl is $650 to $1100 per unit, fiberglass $900 to $1500, wood clad $1100 to $2200, and all wood $1200 to $2400.
Full frame installations are more costly than inserts due to increased labor and materials. Other factors influencing total cost include window style, accessibility, and the need for lead paint abatement. A project with 15 standard vinyl inserts will be at the lower end, while 20 custom wood clad full frame units in a challenging location will be at the higher end.
Timeline for Window Replacement
Window replacement timelines vary by project scope and conditions. For 12 to 20 openings, insert replacements typically take 5 to 7 working days. Full frame replacements, involving more demolition and structural work, generally require 7 to 9 working days.
Factors extending this timeline include extensive rot repair, lead paint abatement protocols, and difficult access to windows, such as on upper floors of triple-deckers. Custom sized windows might extend ordering lead times. Adverse weather conditions can also cause delays to exterior work, so planning is key.
Failures in Poorly Installed Replacement Windows
Poorly installed replacement windows often lead to drafts, air leaks, and water intrusion. If a window is not shimmed and leveled correctly, it can be out of square, causing operational issues like sticking sashes or improper locking. Inadequate flashing and exterior sealing are common causes of water penetration behind trim.
Improper insulation in the rough opening gaps creates drafts, negating energy efficiency. Incorrect shimming can also distort the window frame, potentially leading to seal failure in the insulated glass unit, where condensation appears between panes, reducing the window's performance and longevity.
Replacement Windows Across New England Housing Styles
Replacement window approaches differ across New England housing. Triple-deckers often require full frame replacement due to age and potential rot in original framing, with access adding complexity. Postwar capes often suit insert replacements for their simpler openings, benefiting from standard vinyl or fiberglass units.
For older homes like center chimney colonials, shingled coastal cottages, or mill worker housing, full frame replacement is common. This allows for critical air sealing, flashing, and insulation around the rough opening. Many owners of these properties also choose wood or wood clad windows to maintain historical accuracy and aesthetic integrity, despite the higher cost.
Common questions
The choice depends on your existing window frame's condition. If the frame is solid and free of rot, an insert can work, though it reduces glass area. If rot or damage is present, or you want to maximize glass, a full frame replacement is recommended. Older homes, especially pre-1940, often benefit most from full frame.
Vinyl windows are cost effective and energy efficient. For some older homes, especially historic properties, they may not match traditional aesthetics. For postwar capes or simpler construction, vinyl is a practical upgrade. Always check local historic district guidelines if applicable, as restrictions may influence material choices.
Window lifespan varies by material. Vinyl windows last 20 to 30 years. Fiberglass and wood clad options offer 30 to 50 years. All wood windows, with proper maintenance, can last 40 to 60 years or more. Regular care helps maximize the life of any window.
Key cost factors include the window material (vinyl, fiberglass, wood), whether it's an insert or full frame installation, and the window style. The number of windows and ease of access also play a role. Any necessary lead paint abatement or extensive rot repair will add to the overall project expense. Different choices can significantly shift the total.
Yes, you can replace windows in phases to manage your budget. While feasible, larger, consolidated projects sometimes offer better per window costs due to efficiencies in materials and labor. Discussing a multi-phase plan with a project manager can help identify the most cost effective approach for your specific home and needs.
A thorough quote should specify window material, style, and performance metrics like U-factor. It must detail whether the installation is insert or full frame, outline exterior and interior trim work, and describe flashing and insulation methods. Any lead paint handling and warranty information should be included. A good quote breaks down costs per unit and for associated labor and materials clearly.