Price

Determining the cost of window options can be a difficult task at best. Prices vary by manufacturer and specific needs. But the most important comparison is long-term cost. Total initial cost per square foot is based on many factors including performance, size, glass specifications (e.g. low-E or clear glass), and interior and exterior frame colors (standard or custom).

But maintenance/repair needs and energy/operating costs must be added to first costs to calculate the long-term cost of the building. Window style, accessibility for maintenance and upkeepof framing material must be part of this calculation. For example, between-the-glass options for blinds and shades can offer long-term savings on maintenance and energy usage.

In comparing life cycle cost, aluminum window frames can be lower in repair and maintenance costs. In most cases dual glazing systems, whether in wood or aluminum windows, offer a life cycle cost advantage over windows with sealed insulating glass. Choice of color and coating on an aluminum frame also can affect cost.

At The Lansburgh, Washington, D.C., by Graham Gund Architects aluminum-clad wood windows offer high durability and design flexibility.

In first cost, wood and aluminum are comparable. Generally initial costs for operable aluminum-clad wood windows offer a lower price point than aluminum windows. For storefront applications, costs are comparable. In curtain walls and window walls aluminum systems typically cost less than wood.

Vinyl offers short-term savings because of its initial low cost, but the long-term cost of vinyl is higher because vinyl's expansion and contraction can cause more repairs and potential earlier replacement of windows due to frame failure.

Fiberglass is priced lower than aluminum and is competitive with vinyl. Fiberglass' superior durability should be factored into long-term costs.