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Business Details
37 Years
experience
Your Trusted Partner for Window Installation & Historic Restoration
Founded in 1989, our company has built a reputation as a trusted leader in commercial and historic window restoration. With over three decades of experience, we specialize in delivering comprehensive solutions that combine meticulous planning, expert installation, and specialized asbestos abatement services. Our team of industry veterans self-performs all work, ensuring unparalleled attention to detail and adherence to safety standards. We serve diverse markets including education, government, and historic preservation, offering tailored solutions that meet both regulatory requirements and aesthetic goals.

Our commitment to quality is demonstrated through our in-house fabrication capabilities, dedicated historic restoration division, and partnerships with leading manufacturers. By maintaining full control over every project phasefrom initial consultation to final implementationwe guarantee seamless execution and client satisfaction. Our extensive portfolio showcases successful transformations of iconic buildings while maintaining historical integrity, supported by glowing testimonials from satisfied clients across multiple states.
Services
Window Installation Historic Preservation Asbestos Abatement Project Management Commercial Solutions
Details
  • Year established: 1989
Highlights and features
  • We offer 35 years of specialized expertise in commercial window solutions
  • Our team self-performs all work including asbestos abatement
  • Dedicated historic window restoration division with specialized facilities
  • Certified 3M window film applicators for enhanced security and efficiency
  • Proven track record with government and historic preservation projects
Associations and certifications
  • 3M
  • New York State Asbestos Licensing
What people say
Amazing work Minimal disruption Historical accuracy Efficient crew Fantastic experience
Services
Window Installation
Our comprehensive window installation service covers commercial and historic buildings with precision-engineered solutions. We handle complete replacement projects from initial planning to final implementation, ensuring energy efficiency while maintaining architectural integrity. Our team specializes in complex installations requiring specialized safety protocols and historic accuracy.
Historic Preservation
We specialize in preserving architectural heritage through meticulous window and door restoration. Our dedicated facility handles replication of historic elements using traditional techniques combined with modern materials. This service includes detailed documentation, period-accurate finishes, and compliance with SHPO and NPS requirements for listed buildings.
Asbestos Abatement
Our certified professionals provide integrated asbestos and lead abatement services for window-related projects. We combine removal and installation in single-phase operations to minimize disruption and costs. All work follows OSHA standards with proper containment, disposal, and post-remediation verification protocols.
Project Management
We offer end-to-end project management from initial budgeting to final sign-off. Our process includes CAD documentation, financing coordination, and weekly client updates. This comprehensive approach ensures seamless execution across all project phases while maintaining strict adherence to timelines and specifications.
Commercial Solutions
Tailored window solutions for educational institutions, government buildings, and multi-family housing. Our services address specific regulatory requirements while improving energy efficiency and occupant comfort. We maintain extensive experience with SUNY projects, OGS contracts, and historic tax credit compliance.
People
Mark Nowak
Owner and President
With 40 years in construction and 35 years leading Window Specialist Inc., Mark oversees daily operations and staff development. He transitioned from field work to executive leadership in 2005 after founding the company in 1989.
Gabriella Ashby-Brunner
Project Coordinator
Managing pre/post-contract requirements and hazardous material coordination since 2004, Gabriella brings 20 years of experience in project compliance and accounting operations for complex window projects.
Kenneth Doll
Senior Project Superintendent
With 27 years in construction and 24 years at Window Specialist, Kenneth manages measurement, design, and scheduling for diverse projects. His expertise spans from field installations to executive oversight.
Thomas Corcoran
Project Estimator
Bringing 28 years of glazing industry experience, Tom specializes in aluminum systems and wood window estimations. He transitioned from field work to project costing and technical documentation over his career.
Michael Snow
Project Superintendent
With 28 years at Window Specialist, Mike supervises field crews and manages scheduling. His expertise covers commercial installations, curtain walls, and complex project logistics across multiple states.
Questions
What commercial markets do you serve?
We specialize in educational institutions, government buildings, historic preservation projects, and multi-family housing developments across New York and surrounding states.
Do you handle asbestos abatement?
Yes, we're certified for asbestos, lead, and hazardous material removal. We integrate abatement with installation to reduce costs and project timelines.
How do you preserve historic windows?
Our dedicated restoration facility uses traditional techniques combined with modern materials to replicate historic windows while meeting current safety standards.
What areas do you service?
We operate throughout New York State with projects in Pennsylvania, Florida, New Jersey, Connecticut, Maryland, Virginia, Illinois, and Michigan.
Can you handle large-scale projects?
Yes, our team manages projects ranging from single-building renovations to multi-thousand window installations for institutional clients and developers.
Are you licensed for government work?
We hold necessary certifications for state projects including SUNY and OGS contracts, with extensive experience in public sector window solutions.