about us
The De Marco Difference; A legacy that dates back to 1974. A successful name within the industry. We continue to grow with our experience and accomplishments.
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For over 40 years our dedication to excellence, high quality products and great customer service, has remained the same. A proudly Canadian owned and operated company. King & Co. Inc. is a leading dealer and installer of superior vinyl windows and steel and fibreglass doors.

we offer
Window and Doors installation
High-Quality Windows & Doors for Home Builders
At King and Co Windows and Doors, we specialize in providing premium windows and doors for home builders working on subdivisions and luxurious custom homes. With a commitment to quality, durability, and style, we offer a wide range of options to complement any architectural design. Whether you're developing an entire community or crafting a one-of-a-kind dream home, our products enhance both aesthetics and performance.
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We understand that every home is unique, which is why we offer an extensive selection of windows and doors in various colors, models, and styles. From sleek, modern designs to timeless, classic aesthetics, our products are designed to elevate any space. With a focus on superior craftsmanship and energy efficiency, we ensure that builders and homeowners alike receive the best in both form and function.
With decades of experience, King and Co is your trusted provider of high-quality windows and doors for home builders. Our expertise ensures that every project we supply is elevated with the finest windows and doors on the market.
See the wide variety of high efficiency windows from the best manufacturers in the industry.
Choose one of our elegant steel entrance doors and you will enhance your home