Window Condition Assessment and Repair/Replacement
New York City’s historic buildings have lasted generations, but aging windows often fall behind modern performance standards. Whether made of wood, steel, or aluminum, these windows can let in drafts, water, and noise—leading to energy loss, discomfort, and potential safety concerns.
At CANY, we bring nearly 30 years of experience restoring and protecting the city’s iconic facades. We understand that windows are more than just openings - they’re a critical part of the building enclosure, impacting thermal performance, acoustics, weather resistance, and aesthetics. Whether your project involves a pre-war landmark or a modern tower, we provide the expertise to ensure your window repair or replacement project makes a big difference in performance and value.
Who We Work With
Owners and managers of historic and landmark buildings
Residential and commercial high-rise building owners
Developers and architects working on adaptive reuse projects
Institutions such as hospitals, schools, and other public buildings
Need expert advice on upgrading your windows?
Why Window Condition Assessment and Repair / Replacement Matters
Older windows weren’t designed to meet today’s performance standards. As they age, issues like air and water infiltration, heat loss, and condensation become more common - and more expensive to fix. A professional window assessment helps identify these issues early and provides the information needed to evaluate repair or replacement options.
Evolving building standards affect window performance in several key ways:
Energy Codes – Modern windows are held to higher energy performance requirements that older systems fail to meet.
Materials and Systems – New technologies, such as thermally-broken aluminum or reinforced vinyl frames with double or triple glazing, far exceed the performance of past materials.
Building Envelope Compatibility – Existing exterior wall assembly construction, performance needs, and visual character all inform the design, detailing and installation of replacement windows.
Safety Standards – Window systems must meet current requirements ****for structural integrity and occupant safety, including wind load and impact resistance, bird friendly glass, limit stops, and custodial locks.
CANY's Involvement
Window upgrades in New York City, especially on mid and high-rise buildings, can be complex. At CANY, we guide clients through every stage of the process, with careful attention to budget, timeline and design intent.
Common Problems We Solve:
Energy Inefficiency –Excessive heat loss in winter and high cooling costs in summer.
Drafts & Leaks – Caused by aging frames, gaskets and seals
Condensation & Mold – Often a result of poor thermal performance and moisture intrusion
Noise pollution: Due to inadequate acoustical insulation
Outdated Appearance & Function– Diminishes tenant comfort and building value
Regulatory compliance – Failure to meet energy codes, industry standards, or local laws
And here’s how:
Assessment & Consultation – We evaluate your existing windows to identify conditions and present options for repair of replacement
Detailed Planning – We develop a tailored plan that considers existing conditions, design goals, performance, code compliance, installation logistics, and long-term value
Repair or Replacement – We recommend targeted repairs or full window replacement based on project needs, and manage the work to ensure it’s done properly, with minimal disruption to building operations.
Ongoing Support – Post-installation, we offer evaluations and maintenance guidance for long-term performance
Key Benefits
Why Choose Our Window Condition Assessment and Repair/Replacement Service?
Decades of hands-on experience with New York City façades and window systems
Custom solutions tailored to your building’s design and need
Up-to-date knowledge of materials, latest technologies, and high-performance systems
Experience in NYC’s regulations – including building code, energy code, and local law compliance
FAQ
How do I know if my windows need replacement?
Some signs include drafts, leaks, condensation, or difficulty operating windows. A professional assessment can guide you through the best course of action.
How long does the process take?
It varies based on building size and complexity. We will provide an estimated timeline after your initial assessment.
Can you work with landmark buildings?
Yes - we work closely with the NYC Landmarks Preservation Commission (LPC) to ensure compliant upgrades.
Do I need a permit to replace windows in NYC?
It depends on several factors like the window location, modifications of openings and operable area, and access to light or ventilation. We can guide you through the permitting process.
