Find a Clera consultant near you! View all service areas

The Best Windows & Doors in St. Mary’s

Clera has been making quality joinery for the residents and businesses of St. Mary’s for nearly 40 years. Established in 1978, we have scores of happy and satisfied customers across the community in both domestic and commercial properties. Replacement windows and doors in St. Mary’s are our specialty and we are renowned for our quality merchandise and superior customer service which focuses totally on what the customer requires.

We make to measure all of our windows and doors in St. Mary’s at our own factory located in Ontario, allowing us to focus totally on what each customer wants and being able to deliver according to their exact specification. Our personalised service is the envy of our competitors and allows us to provide a product and price which cannot be beaten. Because we can control costs at Clera, we are able to offer keen pricing without cutting corners. All of Clera’s products come with a lifetime warranty for all component elements so you can relax, safe in the knowledge that any repair or replacement part will be covered free of charge forever.

We offer a range of window styles in St. Mary’s, including single/double hung tilt, single/double slider tilt, awning, end vent slider, casement, and specialty shapes. Our vinyl windows are engineered with Envirosealed glass so you are guaranteed optimum energy performance from summer to winter. That way you can dedicate your savings on heating and cooling costs to other matters.

Our windows are also easy to clean and provide superior privacy and security, keeping your home well insulated from outside noise. Moreover, we offer many grill options and customizable colour options, so you won’t have to worry about repainting, except when you want to change their colour.

St. Mary’s Leading Replacement Windows & Doors

Making your replacement windows and doors in St. Mary’s to order means that you can tailor the finished product to your exact requirements. Our experienced team can guide you through the design process. We offer a tremendous range of styles to choose from and pride ourselves on our flexibility and versatility. We have many satisfied customers throughout St. Mary’s who will bear testament to the quality of both our service and products.

We are proud to state that the residents of St. Mary’s, Ontario have trusted Clera Windows and Doors to protect their homes for nearly four decades. Our dedication to superior quality manufacturing and installation, coupled with exceptional customer service make us a favourite for St. Mary’s residents looking to improve the energy efficiency, comfort, and curb appeal of their homes with our replacement doors and windows.

Clera’s replacement windows and doors in St. Mary’s will transform your home. Expect an increase in value after they have been fitted. Low maintenance and easy to care for, your new windows and doors will stay looking good for years with the minimum of effort. The latest engineering technology at our factory in Ontario will guarantee a premium fit endorsing great energy saving for you and your bank balance.

Feel safe and secure with your new Clera joinery. Enjoy privacy and quieter living space away from the hustle and bustle of modern life.
Choose from Clera’s comprehensive range of glass, grilles and colour options. If the colour you want isn’t there then we can make it for you. Our unique colour retention technology means whichever shade you opt for, your new windows and doors in St. Mary’s will not fade whatever the Canadian winter throws at them. Browse our infinite range of styles, we are sure you will find something just right for your home.

Why not try the design tool on the Clera website which allows you to play around with different styles and colours in an easy to follow a three-stage process. Take time choosing what is right for your St. Mary’s home. Our range of doors covers everything a householder might be looking for and are offered in either fibreglass or stainless steel. Enjoy all the benefits of new handmade windows and doors, take control of all the design with Clera.

Vinyl Windows & Doors

Vinyl is the new wood and Clera reckon it is the ultimate choice for making replacement windows and doors and after nearly 40 years in the business, we should know!
Vinyl might be a surprising choice but it is exceptionally durable and robust, a real requirement in Canadian winters. It is surprisingly lightweight in use and available in a range of thicknesses which allows us to craft the exact products that you are looking for. Vinyl is easy to care for and maintains an exterior sheen and finish even after many years so your windows and doors in St. Mary’s will always look good. It is very competitively priced and we think it beats wood hands down. Vinyl will insulate your home effectively due to its high R-value status. Keep the heat where it belongs – in your home. And avoid the heat in your wallet, you will be amazed at our prices.

Windows and entry doors are part of your home’s envelope, forming a barrier between your cozy living space and the outside environment. So, when your doors and windows are not in top condition with regard to energy efficiency, your home’s energy performance suffers, your pockets get drained, and the occupants persevere in discomfort.

Unlike energy-saving improvements for drafty doors and windows, the professional installation of replacement doors and windows in St. Mary’s improves your home’s energy performance, as well as its visual appeal and value.

Clera fits and installs in accordance with the specifications set out by the Canadian Standards Association. Our fitters are top quality, experienced and professional and we aim to install with the minimum of mess and disruption to your home. Follow the whole process through from design to manufacture to fitting, let Clera handle all of it with our experienced team.

Serving St. Mary’s For Over 40 Years

Clera is both known and loved in St. Mary’s—we have been around a long time and there are plenty of examples of our work to see in the community. We are very proud of our exceptional reputation won by hard work and quality goods. Our focus is putting the customer first which, when combined with our high-end replacement windows and doors, makes for a winning combination.

Clera Windows and Doors’ technicians in St. Mary will help you identify the ideal replacement doors and windows for your home. Our design options are fully customizable to meet the exact needs of your home; plus, our skilled installers are conversant with industry standards, meaning that all the work is superbly done to leave you satisfied with your investment.

Clera has retained the family feel and ethos which was there right at the outset in 1978. This is a tradition that we want to build on and celebrate. We continue the proud Clera tradition in St. Mary’s of top quality windows and doors backed with great service and a lifetime’s warranty.

Relax and watch the winter weather through your new windows, secure in the knowledge that they have all been inspected and tested before they were allowed to leave the factory. Your energy bills will tumble as our super energy-efficient insulation gets to work ensuring a warm ambient temperature throughout your home. All Clera products are Energy Star Certified.

Our contemporary vinyl, fibreglass, and steel doors ensure that you and your family leave and enter your house in style. Our doors are manufactured in-house, which is an important step for ensuring quality construction and bringing costs down for our St. Mary’s clients.

Additionally, all our customers are issued with a full, written factory lifetime warranty after the completion of their installation. Our warranty is transferable, so you can have peace of mind knowing that every occupant will keep enjoying the superior service offered by Clera Windows and Doors.

Meet The Team At Clera Windows & Doors St. Mary’s

Clera is the name at the top of most people’s list in St. Mary’s and with good reason. Our track record speaks volumes. Choose a company which puts customer satisfaction and quality of product before profit. Compare our prices to those of our competitors and see just how well they stack up. All Clera products are lovingly handmade in our Ontario warehouse.
Clera Windows and Doors has built a solid reputation, not only in St. Mary’s, but also across Canada. In fact, we are among the top manufacturers and installers of replacement doors and windows in Canada.

Our decades of experience in the industry make it possible to consistently provide homeowners in St. Mary’s with the highest quality and greatest range of vinyl window and door styles to best meet their unique needs.

Whatever style of replacement doors and windows you need, Clera has exactly what you need, plus the installation will be backed by an unmatched, lifetime warranty.

Contact Clera Windows and Doors in St. Mary’s today to get a free estimate for your replacement doors and windows.

Clera Windows + Doors

Saint Marys
Saint Marys
Saint Marys, Ontario
N4X 0A1

Toll Free: 1-888-738-0738
Phone: 905-738-1870
Fax: 905-738-0586

Big Clera Sale 45th Anniversary Sale 45% OFF All Window And Door Installations + No Interest No Payment Till Jan 2025

View Promotion

Read what clients have to say about Clera Windows

We recently had our sliding patio doors replaced with garden doors with interior blinds. We have received so many compliments on our doors. Mike and his crew (Mike and Anthony) are very friendly and professional. It was a pleasure having them in our home. The installation was seamless and clean. They already have someone who will be ordering from them, after seeing these doors at our place. I'm sure there will be more to come. Thanks guys!

Reviewer: Maria Novielli

Clera Logo

5 out of 5 stars

I have nothing but good things to say about the services I have received from Clera. About 4 years ago I purchased a new front door from Clera. The salesperson was knowledgeable and understood what I was looking for. When it came time for installation, the installers were professional and friendly. They discovered a small dent in the door at the bottom and told me that they had ordered a new door . This was done before my final inspection. Based on this experience, I had new windows replaced in a rental home in Kingston. This salesperson was also very knowledgeable and took the time to help us. He even inspected other windows and told us which ones did not need to be replaced. More recently, I have purchased two new windows for my own home in Ottawa and have been equally pleased with the service, quality of workmanship and the windows themselves. I always recommend Clera to anyone that I know who are looking for windows or doors.

Reviewer: Tammy Yazbeck

Clera Logo

5 out of 5 stars

Excellent! We have loved our dealings with Clera. Rod was amazing in listening and understanding the look we were trying to achieve and then suggesting products with the appropriate features. The windows were delivered within the expected delivery time frame. The installation was done quickly and the crew was very professional and accommodating. The windows we had install have made the house much brighter. The doors we had install feel very solid, despite both presently unique challenges. Clera's quote wasn't the cheapest quote we had but their price was certainly competitive and the results have been well worth the money.

Reviewer: Eric Tang

Clera Logo

5 out of 5 stars

Read what clients have to say about Clera Windows