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Keeping Families and Their Homes Comfortable for 30 Years

Professional Windows and Siding Contractor in Harrow, ON

Prepping your home for its utmost energy performance requires insulation on the outside too. At Zavaros Insulation, we help homeowners upgrade doors, windows, and siding and protect their home and family from the elements.

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A One-Stop Shop for Home Energy Efficiency Improvements in Harrow


Are you looking to replace your old, worn-out, and inefficient doors, windows and siding? Zavaros Insulation can help you secure the exterior of your homes with quality products and professional workmanship. We specialize in complete weatherization of old homes in Windsor and surrounding areas, as well as in Essex and Kent Counties.

Insulation work, once done, usually requires installing new windows, doors, and siding, or repairing the existing ones. We are here to do it all. Our skilled team helps you understand your home’s energy profile and can recommend whether replacements or repairs are required. We carry a wide range of high-efficiency doors, windows, and siding products to support you with any exterior renovation or remodelling projects. Our goal is to help you achieve a perfect curb appeal that you feel proud of.

Quality Products


You can trust our experienced professionals at Zavaros Insulation to offer the right door, window, and siding products that provide strong insulation. Our range of exterior products comes in a variety of impressive style options. It is designed for durability and energy-efficiency. When combined with proper insulation, it results in significant savings for many years to come.

Impeccable Installation


As a customer-oriented contractor dealing in doors, windows, and siding, we aim to protect your investment by helping you keep your home in top shape. We ensure efficient installation of all your products, so you do not have to deal with recurring issues, which are signs of poor installation. So turn to us when you need replacement of old doors, windows, and siding, or the installation of new ones on your property.

Cost-effective Repair Services


When you need doors, windows, and siding repair services in Windsor and surrounding areas, or in Essex and Kent Counties, we are the contractors you should call. Our factory-trained technicians have the skills and tools to repair exteriors damaged due to snowstorms or day-to-day wear and tear. For any emergency repair needs, we are available 24/7 to help you.

Quality Windows, Doors, and Siding to Keep the Weather Out


Looking to buy a certain type of window or door for your home? Or does your property need new entry doors, patio doors, and siding? Zavaros Insulation provides stylish, warranty-backed products in Windsor, as well as Essex and Kent Counties.

We are proud to use only the products from North Star Windows And Doors. We believe in the quality of their products and hope you appreciate them as much as we do.

Repair Or Replace


We can help you create a cost-effective home improvement solution!

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