Design. Build. Quality. Relationships.

Skilled, experienced, and dedicated, Window Specialist Employees are determined to deliver a product that will exceed your expectations.

Our team is filled with industry veterans who are ready to offer their valuable experience. Their outstanding window installation is made possible by the productive interaction between our skilled staff members and each of our customers. If you want a talented workforce who you can trust to get the entire job done efficiently and competently, look no further.

Mark Nowak

Owner and President

Mark is now in his 40th year in the the construction industry, starting out in 1980 and founding Window Specialist Inc. in 1989. As a hands-on owner, Mark worked in the field on window projects and trained new employees until 2005. Currently, Mark oversees the day-to-day operation of a well-qualified staff, including fostering the career growth opportunities of each Window Specialist Inc. employee.

Gabriella Ashby-Brunner

Project Coordinator

Since 2004, Gabriella has handled pre/post contract requirements, coordination of hazardous materials, and accounting, along with acting as a Notary Public.

Kenneth Doll

Design/Estimating/Senior Project Superintendent

Kenneth has worked with Window Specialist Inc. since 1998, originally starting in Field Installations. With 27 years in the construction industry under his belt, Kenneth manages all sorts of jobs, ranging from measurement and design to scheduling.

Eric Kwarta

Project Superintendent

Eric oversees numerous crew projects throughout New York State and Pennsylvania. Hired in 2009, Eric’s project activity areas include field installations of architectural windows, curtain wall, storefront and glass canopies.

Brian Pierce

Drafting and Design Manager

Before joining Windows Specialist Inc. in 2017, Brian spent 17 years in construction, including previously operating his own company. Brian brings 22 years of experience with Auto CAD and Submittals to the team.

Ryan Nowak

Drafting and Design

From 2010-2015, Ryan worked with field installations of architectural windows for Window Specialist Inc. He currently works in the Auto CAD department.

Michael Snow

Project Superintendent/ Crew Supervisor/ Estimating

Mike has been an employed with Window Specialist Inc. since 1996 and is experienced in all aspects of commercial and residential window and door installations. He is also skilled in architectural windows, storefronts, curtain walls and skylights. Currently he is supervising all field crews along with scheduling and estimating of current and future projects.

Thomas Corcoran

Project Estimator

Tom has 28 years’ experience in the Glass & Glazing industry. Started his career as a field installer and quickly worked his way up to an Estimator shortly after. Is proficient in Aluminum Curtain Wall, Aluminum Storefronts and Entrances, Aluminum & Wood Windows, Skylights, Translucent Wall Systems and Metal Wall Panels.

Paul Fry

Fleet Maintenance/Outside Purchases

Since joining in 2001, it’s been Paul’s responsibility to maintain all trucks, trailers, man lifts, and tools, and to purchase replacements when necessary.

Bruce Howitt

Shop Manager

Bruce has worked for Window Specialist Inc. since 1991. He manages all shipping/receiving in our metal/wood shop. He keeps track of shop work scheduling with job site requirements.

Sabrina Delio-Host

Administrative Manager

Since 2016, Sabrina has handled payroll, benefits management, and payable accounts.