The Best Windows & Doors in Oakville

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The Best Windows & Doors in Oakville

Adam Kwasnicki, Service Representative - Clera Windows + Doors

Adam Kwasnicki

Our local representative has been serving Oakville and surrounding areas for over 45 years!


Contact us for more information and about a free quote!

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Our Local Clera Branch Serves Oakville

As the manufacturers and installers of all our windows and doors, we stand behind our work.

Adam Kwasnicki, Service Representative - Clera Windows + Doors

Adam Kwasnicki

Our local representative has been serving Oakville and surrounding areas for over 45 years!


Contact us for more information and about a free quote!

Contact Us

Our Local Clera Branch Serves Oakville

As the manufacturers and installers of all our windows and doors, we stand behind our work.

Clera Windows + Doors

Oakville, Waterdown, Carlisle and Surrounding Areas

Toll Free: 1-844-738-7936
Phone: 1-844-738-7936
Fax: 905-738-0586


Clera Windows + Doors

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


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Best Windows And Doors - Clera Windows + Doors

Get over

$325 per Window

in FREE factory upgrades

With our wide range of ENERGY STAR products, you can be sure to save big on your next dream project!

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Limited Time Offer To Upgrade Your Home - Clera Windows + Doors

Meet The Team At Clera Windows + Doors Oakville

Established way back in 1978, Clera Windows & Doors have always focused on quality manufacture and superior customer service. Our family business specializes in bespoke replacement windows and doors and has gained an impressive reputation in Oakville for our premium workmanship and individual design to suit the householder’s needs.

All our windows and doors are made at our factory in Ontario, handmade for each job to ensure the customer can rely on a personalised premium product with attention to detail our competitors just can’t match. We do not buy in any merchandise from third party suppliers.

Not only does this guarantee top quality but it enables us to control costs offering you the very best value for money. At Clera, we put our money where our mouth is and all our products carry a lifetime warranty including both the frame and the glass. Any problems, just call us and we’ll fix it for free so you have total reassurance.

Clera Windows and Doors has become the leading choice for home windows and doors in Oakville because we’re committed to helping homeowners achieve value for money in the long-term. All of our products come with a comprehensive written lifetime warranty directly from our factory. This means Oakville homeowners can rest assured they’ll be receiving a quality product built for long-term functionality in their home.

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Customized Windows & Doors In Alliston - Clera Windows + Doors
Invest In Your Home Today - Clera Windows + Doors

Video Transcript

Hello. My name is Greg Gainham and I’ve been serving and operating in Oakville for over two years now. I’m proud to be a second-generation sales associate within a family-oriented company.

Clera Windows+Doors has been around for over 40 years. We’re a leading manufacturer in vinyl windows and door products within Canada.

Please contact Clera Windows+Doors today to find a manager in your area. We have been family-owned and operated for 40 years. Our products are made right here in Canada. We serve residents throughout Ontario.

Why Choose Clera

Why take a chance with other window or door companies that purchase their products from another supplier, only to resell them to you for a higher cost?

Clera Windows + Doors is one of Canada’s largest, oldest, most dependable and reputable vinyl window manufacturers in Ontario. We fully manage and take care of your door and window replacement project from start to finish, ensuring every stage of your window or door project meets our lofty standards of craftsmanship.

Why are we Ontario’s most awarded window and door company?

The Clera Care Guarantee Logo

Over 45 Years of Experience

With over 45 years of experience, we have earned a reputation as one of Canada's leading window and door manufacturers and installers.

Certified Technicians Icon

Certified Technicians

You can trust our team of factory trained technicians to install your new windows perfectly—our A+ BBB rating is no accident!

Location Icon

Serving Ontario With over 40 Branches

We have over 40 branches across Ontario, which means that we're always close by when you need us.

Non-prorated Lifetime Warranty Icon

Non-prorated Lifetime Warranty

Whenever anything goes wrong with your windows, we'll take care of it for you—no questions asked.

Energy Star Icon

ENERGY STAR® Certified

Our hung windows meet Canada's strict energy-efficiency standards. A window from Clera is not only high-quality and durable, but also energy-efficient.

Reasons to Love
our Products

Clera Windows + Doors is a reputable vinyl window manufacturer in Ontario with a history of dependable and high-quality products. Our superior materials and cutting-edge technology ensure durability, energy efficiency, and style. We offer customizable styles and colors, as well as superior security features and noise reduction technology to provide the best possible product attributes for your home.

Our team manages every stage of your replacement project, from start to finish. We work closely with you to understand your specific needs and preferences, and use our extensive experience and knowledge to deliver a solution that exceeds your expectations. Trust Clera Windows + Doors for exceptional service and expertise for your home renovation needs.

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Energy Star Icon

Energy Star Approved

Effortless Operation Icon

Modern, Contemporary Design with more glass, and less frame

Better Home Security Icon

Better home security

Noise Reduction Icon

A quieter home; improved noise reduction from the outdoors

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No Maintenance Icon

No maintenance: vinyl windows are virtually maintenance-free

Pilkington Low-e Glass Technology Icon

Pilkington Low-E Glass Technology, engineered specifically for Canadian climates

Structural Integrity Icon

Wet-glazed frames and sashes on all windows; the ultimate in protection against water and wind infiltration, with added structural integrity

Improved Ventilation Icon

Triple-fin weatherstripping with built-in anti-microbial properties, meaning no mould and better air quality

Pure Virgin UPVC Icon

100% pure virgin UPVC, providing protection from fading

Exceptional Durability Icon

Stronger hardware and structural integrity thanks to integrating galvanized steel (allows for larger, more spectacular views!)

Oakville’s Leading Replacement Windows & Doors

The great thing about our bespoke joinery is that our products can be made to suit your exact requirements and preferences. Take advantage of our experience in designing replacement doors and windows in Oakville. Our versatility is our strength at Clera and we can reflect all the different styles and tastes in Oakville which span a really wide variety.
Quality is our watchword and you can be sure that our replacement windows and doors will enhance your Oakville home, adding both style and value.

Another leading benefit of turning to Clera Windows and Doors is our customization options. We help homeowners integrate their ideal windows and doors in their home by offering products according to the client’s exact specifications. The client simply needs to choose their style of window, select their preferred type of glass, and then pick a colour from our complete range to ensure the ideal product is created for their property. It’s a service that has helped thousands of Oakville homeowners achieve unique window and door products that stand out for their quality and their performance.

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Window & Door Assemblers - Clera Windows + Doors
Best Vinyl‍ End Vent Slider Windows  - Clera Windows + Doors

Easy to clean, our doors and windows always look tip-top. We subscribe to the latest engineering methods ensuring maximum energy efficiency, supporting both the environment and saving you money with our stylish doors and windows. We understand that home security is crucial to all customers and we have an excellent reputation throughout Oakville for offering both privacy and safety as well as significantly reducing noise on busy streets.

We have an almost endless choice of glass options and grills including speciality glass. We can customise colours to perfectly match your Oakville home and our unique colour retention technology keeps the tone as crisp and fresh as the day it was installed. Choose from bay windows, bow, high profile and low profile to perfectly complement your home.

Use the virtual design facility on our website which offers an easy three-step process to try out different designs for your Oakville home. Just choose the grille, glass and colour using simple menus and tools. Try out different looks until you are sure you have the perfect choice to suit your taste. Choose from classic designs, traditional, sliding, storm and shaker made from either fibreglass or steel. Let Clera replace your outdated doors and windows, we have endless style options to reflect functionality and appearance.

Vinyl Windows & Doors

Clera Windows & Doors have built their reputation on high quality and distinctive products made from only the finest vinyl. Our workmanship places us as one of Canada’s leading manufacturers and installers and our extensive range mean we have something for everyone and for all budgets.

Vinyl is our top choice of material as it is exceptionally durable, very competitively priced and because it is lightweight, the doors and windows are easy for the customer to manage. Vinyl retains a ‘just manufactured’ finish for years cutting down on cleaning time and chemical products for the householder. But did you know that vinyl also has a high R-value? This helps to maintain your rooms at a constant temperature. We offer a comprehensive range of styles and finishes so there is no element of compromise or restriction just because you have chosen vinyl.

Clera’s fully trained installers work to the regulations set by the Canadian Standards Association so we can offer a quality product with an experienced team to install it. Enjoy a lifetime warranty on your windows covering all the hardware, components and glass. Ask around in Oakville and you will find our reputation precedes us. Take the worry out of replacing your windows and doors with Clera. Improve your home’s energy efficiency, value and curb appeal.

Vinyl Windows & Doors - Clera Windows + Doors
Bay & Bow Windows - Clera Windows + Doors

Serving Oakville For Over 40 Years

Clera is well-known in Oakville as we have been supplying top quality replacement windows and doors for nearly 40 years. Our reputation has been hard-won amongst Oakville residents. We are known for our ability to deliver high-end replacement windows and doors which benefit the customer on every level.

Take advantage of our experience and quality from design and manufacture right through to installation. We hold family values at the core of our organisation and Clera has remained a family business since it was founded in 1978. We pride ourselves on our exceptional workmanship supplying quality windows and doors to Oakville homes at really competitive prices with delivery and installation anywhere in the area.

Oakville residents are no strangers to harsh, Canadian winters. That’s why each of the window and door products in Oakville offered through our team is designed to stand up to the challenges of the Ontario wintertime. We’re offering the market’s most durable products to ensure Oakville homeowners achieve exceptional comfort for many years to come!

Our doors and windows meet the most rigorous standards and are stress tested and inspected before they leave the factory. Relax and enjoy warm ambient temperatures throughout your home with Clera’s stylish doors and windows which not only look good but will save you money on your household bills. All our products are Energy Star Certified supporting a greener environment and cutting down on your heating costs too.

Extensive Range Of Vinyl Windows - Clera Windows + Doors
Serving Aylmer For Over 40 Years - Clera Windows + Doors

Meet The Team At Clera Windows & Doors Oakville

Choose a company who put family values first and places a premium on the quality of the product and the installation service but all at an affordable price for the end-user. Our intention is to manufacture and fit good-looking stylish windows and doors in Oakville that meet the customer’s needs and tick the environmentally friendly box as well. All our products are handmade in our Ontario warehouse.

Take advantage of our free estimate service when you plan your next home project. We are certain our value for money cannot be beaten. Update your home with Clera’s replacement windows and doors. Drop into our nearest Oakville location and meet our professional team.

It’s the ideal time to begin ordering new windows and doors for your Oakville home! To begin the process today, contact our trusted experts directly. We’ll help answer your questions and ensure you have access to the latest in high-efficiency home windows and doors.

Professional Installers - Clera Windows + Doors
Meet The Team - Clera Windows + Doors
Best Options For Your Replacement Doors And Windows - Clera Windows + Doors