Essential Window Specifications

As architects in New York, here’s what you need to know when specifying windows for residential projects:

1. Egress Requirements: Windows in sleeping rooms must meet egress standards for emergency exits. In New York, an egress window typically requires a minimum opening width of 20 inches, a height of 24 inches, and an opening area of at least 5.7 square feet, with the sill no more than 44 inches from the floor.

2. U-Value: U-value measures the rate of heat transfer through the window. Lower U-values indicate better insulation and energy efficiency. For New York's climate, a U-value below 0.30 is ideal for reducing heating and cooling costs.

3. Solar Heat Gain Coefficient (SHGC): SHGC indicates how much solar radiation enters through the window. In colder climates, a higher SHGC (around 0.30-0.40) helps capture heat from the sun in winter, reducing heating needs.

4. Types of Glass: Double or triple glazing, low-E (low emissivity) glass, and laminated glass improve energy efficiency, sound insulation, and UV protection. Low-E coatings are especially valuable for controlling heat gain and loss without compromising natural light.

5. Materials: Choose from wood, vinyl, aluminum, and fiberglass frames. Each material has different thermal properties, aesthetics, and durability. Vinyl and fiberglass are popular for their energy efficiency, while wood offers a classic look but may require more maintenance.

6. Energy Star Compliance: Windows with the Energy Star label meet strict energy-efficiency guidelines for New York’s climate zones, helping homeowners save on utility bills.

With the right balance of aesthetics, efficiency, and code compliance, window selection can greatly enhance a building's performance and comfort.