Mercury Excellum Inc.
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Quality Assurance

Since 1953, Mercury Excelum has been a trusted and dependable name in building materials throughout New England.
Whether you’re searching for the perfect energy efficient vinyl window or seeking to enhance your home with durable maintenance free vinyl siding, entry and storm doors, fencing or railing, we can help!  With a commitment to product excellence and outstanding customer service, Mercury Excelum is your premier source for quality building products.

Homeowners and Property Managers

For over 50 years Mercury-Excelum has proudly assisted homeowners throughout New England with quality products that provide long lasting beauty and energy efficiency.When it comes to choosing the right products for your home Mercury Excelum is the name you can trust for the highest quality products that offer the best performance for long lasting, virtually maintenance free enjoyment and protection. Our history and reputation is our promise… that you are in good hands!

Contractors and Architects

At Mercury Excelum Our core belief is providing contractors and architects with the Tools and Resources that Increase your profitability and enhance business productivity. Since 1953, our quality products have set the standard for performance and dependability.
To ensure your total satisfaction, our technical experts provide you with the information you need – when you need it. From on-time order fulfillment to the latest installation techniques for the job-site. Get access to all the testing and performance data for each of our products. as well as electronic drawings in .PDF and .DWG formats. Request our interactive CD today!




Qualified Contractors

Company History

Mercury Excelum is a third-generation, family-run manufacturer and distributor of high quality building materials including vinyl windows, doors, siding, railing and fencing products,  headquartered in East Windsor, Connecticut. Founded in 1953, our origins began as a leading manufacturer of aluminum storm windows.  Since then, we have been at the forefront of providing solutions that set the standards for beauty, performance and dependability. 

As the customer’s interests have evolved over the years, so has Mercury Excelum!   We continue to expand our diverse product line of replacement and new construction vinyl windows in our state of the art 100,000 square foot manufacturing facility located on our 23 acre site.  Beauty, performance and durability are the trademarks of our design and engineering throughout our Thermo-VyneTM, Advantage™ and Harmony™ Series of Windows.  Our custom made Vinyl railing and fencing products are a perfect accent to any home as well.

Whatever the need – our 50 plus years of history and reputation is our promise you are in good hands. 

Ask your contractor for products from Mercury Excelum…you’ll be glad you did!

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