
Highly Efficient, Low-Maintenance Windows in NW Bergen County
The Tri-State’s Most Trusted Window Replacement Company
Homeowners often aren’t sure when it’s time to replace their windows. At PJ Sullivan Exteriors, we know the signs to look out for. If your units are difficult to operate, drafty, warped or rotting, we recommend investing in replacement windows right away. New windows can work wonders for your home, boosting curb appeal and lowering your energy bill by double digits.
After more than a decade in the industry and experience with many different products, we’ve chosen to offer our clients the Marvin Signature, Marvin Elevate and Marvin Essential line of windows from esteemed window designer Marvin®. These windows are tough and long-lasting, as well as modern and beautiful. Designed for unprecedented performance and exceptional aesthetics, these windows are perfect for a luxury home exterior.
Fiberglass Windows
Fiberglass is well known for its longevity and remarkable energy-saving qualities, keeping your interior cozy and comfortable during the cold months. Spring and summer rainfall is no match for the low-maintenance features of fiberglass windows — a simple wipe with soapy water will keep your windows looking great for up to 40 years!

Your Project. Our Passion.
Five-Star Client Reviews
At PJ Sullivan Exteriors, we prioritize exceptional service and the highest level of quality, every time. Read some of our client reviews below.
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I love the way they treat their clients and I'm happy to work with them! Pete and his guys were fabulous.- Steven J.
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Pete is a pleasure to work with, and all of his work, and the work of his team, is top quality. His design suggestions are always insightful.- Jason F.
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Pete is a pleasure to work with, and all of his work, and the work of his team, is top quality. His design suggestions are always insightful.- Jason F.
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Outstanding company to work with! The work was completed in a professional manner, on schedule, and with an exceptionally high level of precision and attention to detail.- Emalac
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The job at my house was wonderful from beginning to end. I would definitely recommend them to anyone.- Josephine C.
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Professional, competent, timely. A pleasure to work with this group.- Sal R.
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We are very satisfied with all the planning and work done by PJ Sullivan Construction Company on our home. They exceeded our expectations and are very happy we went with them for our project.- Mike R.
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Pete and his team did a great job on my project. They were conscientious of my budget and did their best to work within it. His crew work was very clean and they were very friendly and respectful to my family.- Alex M.