The Best Doors & Windows in Markham

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The Best Doors & Windows in Markham

GTA, Service Representatives - Clera Windows & Doors

Our GTA Team

Our local Markham team has been serving Toronto and GTA for over 45 years!


Contact us for more information and about a free quote!

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Our Local Clera Branch Serves Markham

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

GTA, Service Representatives - Clera Windows & Doors

Our GTA Team

Our local Markham team has been serving Toronto and GTA for over 45 years!


Contact us for more information and about a free quote!

Contact Us

Our Local Clera Branch Serves Markham

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

Clera Windows + Doors


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

The Best Doors & Windows in Markham

At Clera Windows & Doors, our journey started 41 years ago in 1978. We are a customer-focused business geared towards creating excellent quality furniture, specializing in putting together custom windows and doors in Markham. We have been one of the leaders in customized furniture for more than four decades, and have delivered the very best solutions for doors and windows in Markham.

Markham is a beautiful city within the Greater Toronto Area, located just 30 kilometers Northeast of Downtown Toronto, and home to over 320,000 residents. Popular for the unique asian market shopping experience you can find at Pacific Mall as well as the up close personal live performance venue at the Flato theatre, hundreds of people are find much fun and entertainment in the city of Markham. Here’s an interesting fact: In 2012, councillors had agreed to change the name proceeding Markham from “The Town of Markham” to “The City of Markham” due to its rapidly growing community and since becoming Canada’s 16th largest municipality.

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Markham is the York Region’s most populated city and the fourth most populated city in the the Greater Toronto area, after Toronto, Mississauga, and Brampton. With the growing demand to living in Markham, Residents are finding more and more reasons to continually improve their home’s functionality, aesthetic, and overall security. Not just for added security and comfort but also to for increased value of their home. New windows and doors can be a great remedy for all of these crucial elements of your home as well as soundproofing, providing better insulation to save you money, and reducing greenhouse emissions in the winter. Fortunately, Clera Windows and Doors has a convenient location right here in Markham.

Unlike some of our competition, we don’t procure products from third parties and sell them back to our customers: we have our very own factory where everything is built with detailed attention and absolute care. This helps us cut the production cost to the minimum, which guarantees our clients that they can enjoy top quality products at a favorable rate.

You don’t have to worry when you acquire a product at Clera, because we’ve made sure that your purchase is covered by our lifetime warranty program. This program covers all Clera vinyl windows, all the components, and the glass panels. So just get in touch whenever you are not satisfied with our services, and we’ll try our best to solve the issues for free!

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

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.

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Certified Technicians

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

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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!)

Markham’s Leading Replacement Windows and Doors Group

At Clera Windows & Doors, we understand that each of our shoppers has their unique preferences and selections. To guarantee that we meet the expectations of our many clients, we tirelessly work to create tailor-made designs that can live up to our customers’ expectations. We provide tons of options for both windows and doors in Maple. This wide range enables us to be as adaptable as possible, to meet our client’s requirements, even as those requirements vary from one purchaser to the next.

Clare windows give various focal points to your home. They are easy to clean and have been built with industry-leading energy efficiency. That’s why they’re known all over Ontario for giving security, protection, and comfort, and can (without much of a stretch) keep out any bothersome sounds.

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

We have an enormous selection of glass, specialty glass, and grill options to suit your style, and we give adjustable color choices for you to pick the best tone for your Markham home. Our top of the line color retention technology secures whichever color you pick, guaranteeing that it’ll go the distance. Our windows selection comes in low profile, high profile, bay, and bow, not to mention specialty shapes adjusted to your home which we can work through on a project-by-project basis.

With our webpage’s graphic designer, you can modify the replacement doors to match your taste. First, select the grille of your choosing, crafted from uPVC. Next, pick your glass type, and lastly, choose the color that fits you. Whichever style you pick, our virtual designer will guide you towards discovering something that suits you.

Clera’s replacement doors improve the appearance of your Markham home. Irrespective of whether it’s steel or fiberglass you’re looking for, our product catalogs incorporate various unmistakable styles.

Vinyl Windows & Doors

At Clera Windows & Doors, we create our products with only the best types of vinyl, which adds distinctiveness to our products, making us one of the top producers and installers of replacement vinyl windows and doors in Markham. We have an enormous inventory for you to browse, both classic and modern.

We prefer vinyl for several reasons. It’s strong, can endure a rough climate, and is also very cheap, making it a breeze to repair. You don’t need to spend a lot of money to keep your replacement doors and windows in Markham looking neat and tidy.

The high R-Value is also one of the reasons why prefer vinyl. Being effective at reflecting heat waves, it’s a great choice for regulating temperature inside your home.

As the main choice for the residents of Markham and surrounding areas, we manufacture our vinyl windows and doors in Mark to meet your special needs. We’ve trained our Clera Windows and Doors technician in our very own developmental course, under the direction of the Canadian Standards Association, and work tenaciously to ensure that you acquire the best and complete control over our products.

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

Serving Markham for Over 40 Years

We provide our customers with unbeatable services, with more than 40 branches spanning across Ontario. Not only are we involved in the production of replacement doors and windows, but we are also actively involved in serving the needs of every customer who does business with us. At present, we have served more than 250,000 families. We have built our brand to be one of the most respected and trusted windows and doors companies in Ontario.

As a family run company since 1978, you can be assured that we understand and appreciate the importance of any home renovation project to your family. We’re in the business of providing comfort and security for households across Canada, and we couldn’t be more grateful for all the homes and families that have entrusted us with such an important decision to improve their home’s functionality and security.

All of our fenestration installation technicians are rated by the Canadian Standards Association and our products are all ENERGYSTAR rated as well, so you know our work can be trusted. We’ve also taken home the “Top Choice Award” and are so confident in our craftsmanship that we include a written, lifetime factory warranty on our products. What this means for you is that you won’t have to buy another pesky replacement part again!

The harshness of Canadian winters can sometimes be quite extreme, which is why we craft our products so that they can adapt to any kind of extreme weather conditions. Before our products leave the shop, they must undergo a rigorous technical inspection to ensure that they can withstand harsh weather conditions, which we consider to be the best way of ensuring that the customer is never let down.

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

Meet the Team at Clera Windows & Doors in Markham

Clera Windows and Doors is a family enterprise that concentrates on product value and affordability. We’re focused on giving you the best experience possible, and design our products to meet our client’s precise desires. We aim to please our customers with our work. That’s why we strive to make our replacement doors and windows in Markham both friendly to the environmentally and lovely to look at.

With our solid team, we guarantee that the product that you buy will give you what you are searching for. If you are up for an update to your windows and doors to your Markham home, we can give you free inquiries about your next projects. Drop by our nearest Markham site and we’ll help you realize that vision.

If you’re situated in the Markham, Vaughan, Thornhill and Richmond Hill areas, you’ll find Clera Windows and Doors at 31 Hughson Drive in Markham. To book a free consultation or to get more information on new replacement windows and doors for your home, call Clera Windows and Doors at 1-844-738-7362 or follow these driving directions:

Continue onto the Don Valley Parkway N for 13.5 kilometers.
Continue onto ON-404 N for 8.7 kilometers.
Use the right 2 lanes to take exit 27 for Highway 7 toward Richmond Hill/Markham/ON-7 for 800 meters.
Use the right 2 lanes to turn right onto York Regional Rd 7 (signs for Markham/Highway 7 E) 900 meters
Turn left onto Woodbine Ave/York Regional Rd 8 (signs for Regional Road 8/Woodbine Avenue) 300 meters
Turn right onto Lunar Crescent 290 meters.
Turn left onto Hughson Drive, look for 31 Hughson Drive. The destination will be on the left.

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