Description

• High-quality, energy-efficient windows can play a significant part of a well-designed building envelope by reducing energy costs and improving indoor comfort by minimizing drafts and temperature fluctuations. AES recommends low-E glass with a low Solar Heat Gain Coefficient ir SHGC on south and southwest facing windows. Heat gain and heat loss through windows are responsible for 25%–30% of residential heating and cooling energy use (DOE). Windows insulative qualities are rated by U-Value, which is the inverse of R-value and the U-Value is determined by the New York city Energy conservation Code.  Selection should include the highest ENERGY STAR and National Fenestration Council (NFRC) ratings that is within the budget; while also ensuring they are durable, easy to maintain and have handles and locks that are easily reachable and operable by all residents, including those with mobility challenges.  Hardware should not have sharp edges and screws should be tamper-proof.  
• Window replacement may also require repair of lintels and surrounding brickwork and scaffolding / sidewalk sheds, see Building Exterior, Masonry section and Scaffolding section. 
• Window replacement may involve environmental abatement. 

Baseline

• The Architectural & Engineering Services office (AES) recommends sliding and casement windows in living rooms/bedrooms, casement windows in kitchens/bathrooms, and double-hung windows in bathrooms where the window is located at the shower or tub. 
• In some instances a combination of a fixed and operable sash is acceptable. 
• The color of windows, doors, and louvers located on lower floors must match the color of the existing lower-floor windows, doors, and louvers. 
• Integral sash stops are required for the safety of children. Window operating forces, heights, and other accessibility factors must comply with Federal, State, and City codes. 
• Energy Efficiency – NYCHA uses thermally broken aluminum frames. AES recommends baked enamel over an anodized aluminum finish. However, some manufacturers have obtained prior DOB approval for alternate materials, and this is permissible. 
• Glazing must meet NYC Energy Conservation Code (NYCECC) and the Enterprise Green Community (EGC) NYC Overlay. Low-emissivity (Low-e) coatings or films must be used to improve solar and thermal performance without compromising the amount of visible light transmitted. 
• NYCHA buildings fall under Commercial Buildings as per the NYECC and must follow those requirements for U-value. 
• The installation detail must be air-sealed as per NYCECC. 
• Many NYCHA windows fall under the requirements of Commercial buildings 
• Window-mounted Air-Conditioners – NYCHA receives numerous citations for improper window AC installations, which causes tremendous financial waste and organizational inefficiency. Details should consider a thermally broken window AC partition that makes installation and removal easy and code compliant. For buildings with through-wall AC sleeves, rehabilitation should ensure the sleeves are air-sealed. 
• Air-Conditioners – Installation should be coordinated with Mechanical discipline.

Stretch

• Propose and price an exterior or window-integrated shading strategy. [COMPMOD]
  • Options include but are not limited to fins, louvers, brise soleil, external frame sunshades, shutters, screens, or other façade treatment, or between-the-glass shades.

Strategies

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Last Updated on October 22, 2024 at 2:06 pm

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Specifications

08 51 23 – Steel Windows

07 62 00-1 – Flashing: Sheet Metal and Flexible

07 62 00-2 – Flashing: Sheet Metal and Flexible

10 72 00 – Window Guards

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