Clera has been in business since 1978. With quality services, affordable rates, and peerless customer service, we have achieved tremendous growth in the field. We have earned a strong reputation in Cornwall by offering a comprehensive range of custom shapes, colors, styles and sizes of doors and windows. We offer the construction of new fixtures, as well as the renovation and replacement of faulty and outdated doors and windows among our services.

We offer a wide range of windows including double-hung replacement windows, end vent slider, casement windows, sliding windows, bay & bow windows, low profile fixed, high profile fixed, awning windows, specialty windows, and picture window styles.

At Clera Windows & Doors, we have a significant inventory of finished windows and doors and can fabricate a wide range of custom styles and colors. Clera is a premier manufacturer in Ontario and we have been recognized as the top pick in our product category by HomeStars. If you are looking for energy-efficient windows to reduce your heating and cooling bills or want to reduce the ongoing maintenance of your windows and doors, call on our team for some ideas. We have long served the city of Cornwall and surrounding areas and would be excited to speak with you.

Cornwall’s Leading Replacement Windows & Doors

A home is one of the largest investments a family makes. We view it as our responsibility as a company to help our customers protect this investment and increase its value. Clera commits to provide the right guidance on design ideas, material, or options as well as cost estimation of the project. We help you visualize the best impact windows and doors for your home before purchase. We use high-quality materials of renowned brands that exceed the expectations of our customers and establish a long-lasting relationship.

Our belief is that by providing quality services to our customers, we can win their trust. That’s why we strive to offer prompt service and speedy delivery times. Our customers are also able to get in touch with us 24/7 for a quick response to any window and door warranty situations or issues.

We have also won a bunch of industry awards and certificates, making us Ontario’s most awarded window company. Our experienced technicians will take the necessary measurements and then professionally install the windows and doors into their exact openings, making sure they are properly fitted. When all the work is done, our technicians and staff will walk you through a product demonstration and provide you with tips on the operation, care, and maintenance of the newly installed windows or doors in Cornwall. We are also available to provide post-installation services if any issues may arise, such as patio door adjustments or window maintenance questions.

At Clare, we also offer free, in-home consultation to you with no obligation. Our replacement window and door specialists and staff will listen to all of your needs and provide you with the design and styles that would suit your home in Cornwall. We’re careful to take care of our environment. We are committed to making windows and doors in Cornwall that meet the strict technical requirements of ENERGYSTAR, resulting in big energy savings, as well as helping you to stay cool in the summer and warm in the winter.

With over 40 installation and sales branches spread across Ontario, so far we have provided services to 250,000+ homes and dedicated to serving more homes in upcoming years.

Vinyl Windows & Doors

Over the past few years, vinyl has become the material of choice for replacement windows and doors as well as for new installation. Vinyl is also energy efficient, and has emerged as the top performer in Cornwall as well as in almost every other locale. Vinyl doors in Cornwall are remarkably durable, inexpensive, and extremely energy efficient, which promises good value for money. At Clera Windows & Doors, we strive to make vinyl windows that are virtually maintenance-free, requiring only simple cleaning steps which makes it look new and shiny. We are proud to carry a large range of remarkably high-quality vinyl windows available in a variety of styles and colors.

With the industry’s best warranties and remarkable energy efficiencies, Clare makes the best customized vinyl windows and patio doors in Cornwall. At our location in the area, we have an extensive assortment of vinyl windows to choose from. Every one of our windows can be customized with plenty of style options and our inventory is stocked with a variety of ready-to-go styles featuring Low-E Glass. The lifetime warranty that we offer with our products as well as our factory-trained, professional installation make Clera the number one choice for replacement windows and doors in the Cornwall area.

All of our windows are backed by a comprehensive warranty. You are protected with our full warranty when you choose Clare Vinyl windows. All vinyl parts are sold with a lifetime guarantee and you’ll never have to pay for a new part again!

Serving Cornwall For Over 40 Years

With over 40 sales and installation centers in Ontario, we have been serving the residents of Cornwall for over 40 years now. We offer a local, personalized experience to make the window purchase experience easy in Cornwall. When a client put trust in us for handling the window and door needs of their house, we take responsibility for the successful completion of that vision. From planning to execution and post-service inquiries, our goal is to meet customer satisfaction.

Did you know that Clera’s products are featured in over 200,000 homes? There is little wonder why we are the leading door manufacturer in Ontario with our huge selection of pre-made and custom security doors, sliding doors, and French doors in Cornwall. Add security and beauty to your home or office by speaking to one of our expert staff today!

Meet The Team at Clera Windows & Doors, Cornwall

We have an experienced, licensed, and dedicated team of technicians and installers who know how to get the job done for the very first time. When you choose us, we take installation seriously and only allow the best services that meet your needs and give your home a new stylish outlook.

All of our installers are local, which means they know every corner of Cornwall and will be there in a flash if your windows or doors ever need further maintenance. After every installation, we take our client’s feedback and deliver directly to our management team. At Clare, we never leave clients in the dark, and offer the best services no matter what—that’s what helps us to promise satisfaction for our customers who want windows and doors in Cornwall.