




Maintaining a home in Brockville means dealing with harsh weather and aging architecture. To keep your home comfortable and utility costs low, new windows and doors are essential for improving energy efficiency and reducing energy bills.
At Clera Windows + Doors, we specialize in door/window replacement Brockville homeowners trust, offering competitive, factory-direct pricing and exceptional support. We stand behind our product quality, which is why we have one of the best warranties for window replacement and door installation in Brockville. Manufactured at our Ontario facility, we work closely with you to ensure complete customer satisfaction. Virtually everything can be customized, from the style of glass in your front door to the window coverings in your master bedroom! Invest in your home’s curb appeal and upgrade your windows and doors today.
Our local representative has been serving Brockville and surrounding areas for over 5 years!

Discover how affordable your new windows and doors can be with our latest promotions.
Clera Windows + Doors proudly serves the City of the 1,000 Islands and surrounding Eastern Ontario communities, including Prescott, Maitland, Athens, Smiths Falls, and Kemptville.
Contact your local Clera representative to claim your free consultation for new windows and doors in Brockville.
Looking for the best windows and doors, Brockville? Explore our collection of ENERGY STAR® certified products, manufactured with advanced systems for greater thermal insulation, soundproofing, and operational efficiency. Replacing your windows/doors is made easy with Clera Windows + Doors Brockville.

New windows designed for long-term durability and energy efficiency. Made with the highest quality products and 100% pure virgin uPVC. Installed by certified experts.
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Protect your home with secure doors Brockville homeowners trust for maximum security and insulation. Choose from low-maintenance options like fibreglass and steel front doors.
Shop Exterior Doors

Considering a larger window that connects your indoor and outdoor spaces? Sliding patio doors or garden doors are the perfect compromise for your home.
Shop Patio Doors
Clera Windows + Doors is the preferred choice for Brockville windows and doors because of our commitment to quality craftsmanship and customer satisfaction. Since 1978, our family-owned business has served as a one-stop shop for energy-efficient windows and doors in Ontario.
We don't cut corners on innovation. We strive to create products that not only boost curb appeal but also save you money, ensuring your investment performs perfectly for decades.
By manufacturing our products locally, we cut out the middleman to keep the final cost of your next project affordable. Our local Brockville team would be thrilled to help you get the new windows and doors of your dreams, complete with professional door and window installation.

With some of the highest ratings for customer satisfaction, it's clear why Clera is Ontario's most awarded window company!
9.2/10
on HomeStars
16x Homestars Winner
We’ve perfected our window installation and replacement process to be efficient and stress-free, ensuring your home is updated with minimal disruption.
The final cost of your window replacement project depends on the style and number of units. Larger windows, like picture/floor-to-ceiling, bow windows, or bay windows, typically average at a higher cost.
Our team is happy to walk you through all the ways we can help reduce or manage the cost of replacement windows for your Brockville home, including taking advantage of our promotions, government incentives and grants, and flexible financing.
Many Brockville homeowners qualify for federal or provincial grants when upgrading to energy-efficient windows. We can help you navigate current rebate programs.
Absolutely. Vinyl windows are specifically engineered to handle the dramatic temperature swings of Eastern Ontario. Unlike wood, they won’t rot or warp due to river humidity, and unlike metal, they don’t conduct the cold. This makes them a high-performance choice for energy efficiency, helping keep your home warm in winter and cool in summer with very little maintenance.
Our professional installers typically complete a standard window replacement project in just one day, though the timeline depends on the number of units. We prioritize your comfort by working efficiently to minimize exposure to the elements. During installation, we carefully remove and dispose of your old, existing windows and doors, leaving your home clean and significantly more energy-efficient.
Upgrading your windows and doors in Brockville should be an investment in your home’s future. At Clera Windows + Doors, we combine over 45 years of experience with the latest energy efficiency standards to deliver products that stand the test of time.
Experience why 300,000+ Canadians have trusted Clera for their home improvement needs. Contact your local rep for a free estimate on industry-leading custom Brockville windows and doors!
