The Best Windows & Doors in Alliston

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The Best Windows & Doors in Alliston

Les Stringer, Our Local Representative - Clera Windows + Doors

Les Stringer

Our local representative has been serving Alliston and surrounding areas for over 30 years!


Contact us for more information and about a free quote!

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Our Local Clera Branch Serves Alliston

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

Les Stringer, Our Local Representative - Clera Windows + Doors

Les Stringer

Our local representative has been serving Alliston and surrounding areas for over 30 years!


Contact us for more information and about a free quote!

Contact Us

Our Local Clera Branch Serves Alliston

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

Clera Windows + Doors


Toll Free: 1-844-738-7362
Phone: 1-844-738-7362
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 Windows & Doors in Alliston

Alliston is located in Simcoe County in the province of Ontario and is part of the town of New Tecumseth. Alliston is famous for its potatoes and celebrates the annual Potato Festival. Alliston is a fast-growing residential area, which means new homeowners moving in each year. The residents of Alliston deserve to have the best homes and Clera Windows can do its part to make this happen.

Roger Linda is your Clera consultant for the fine community of Alliston. He has over 20 years of experience in the business of door and window installation, and now brings this experience to benefit the people of Alliston.

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Clera Windows & Doors has built itself on a reputation of honesty, professionalism and placing customers first. It is our goal to give you the best value at the most affordable price—no middleman!

For more than four decades, Clera Windows & Doors have been proud to provide customized, customer-first solutions to all kinds of windows and doors needs in Alliston. A large part of what makes us different from our competitors is the fact that we manufacture all of our own materials in our Ontario factories, meaning that the ultimate price paid by the consumer is less since we have cut out a large portion from our own expenses.

Because we’re so sure of the quality of the products we make for our Alliston consumers, we offer a no-strings-attached lifetime warranty on all of our windows and doors in Alliston. The deal also extends to component parts, so no matter what it is that happens, we’ll be able to take care of it for you. Get in touch with us right away if for any reason a product doesn’t meet your standard and we’ll get it fixed right away at no cost.

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!)

Alliston’s Leading Replacement Windows and Doors

To ensure that we meet the expectations of our disparate customers, we work hard to supply tailored designs that can live up to our customers’ expectations. We provide a plethora of options for both replacement windows and doors in Alliston, with a focus on customizability and endurance.

Our windows are first-class quality and offer many advantages to you and your own home. They are easy to clean, engineered with industry-main energy performance, saving you cash. Similarly, they’re acknowledged throughout Ontario for offering protection, privacy and comfort, and can simply shut out any undesirable noise. We provide a range of options with regards to glass, specialty glass, and grill options to suit your style, and we provide customizable color alternatives so you can pick a high-quality hue for your home. Whatever color you choose won’t fade, thanks to our advanced color retention technology.

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

We’re proud to offer a virtual designer hosted on our own website, which makes customizing replacement windows and doors a breeze for our treasured customers. It’s just a matter of a few clicks, and then you’ll have your very own new set of doors and windows designed to match your personal sense of style and taste. Our exterior doors add to the aesthetic look of your Alliston home. Our metal or fiberglass door collections include a number of famous styles, among them fiberglass, sliding and garden, storm, and shaker-type doors. The loving attention and care that goes into each door ensures you’ll love the results.

Vinyl Windows & Doors

At Clera Windows & Doors we offer a suite of door and window collections for our clients. Your home would be incomplete without the perfect door and window to match and this is where we demonstrate our expertise. Our specialists will work with you to choose the perfect door/window for your home, then we will have it installed by professional technicians. These technicians are carefully selected for their training and experience, and the lifetime warranty ensures that they will help you whenever you need it. Our products and services save energy and add value to your home.

Known for its one of a kind furnishing merchandise, Clera Windows & Doors all are constructed from the finest quality vinyl. Being one of Canada’s highest quality producers and installers of replacement vinyl home windows and doors, we make replacing your windows and doors a breeze. Whether or not you’re seeking out something conventional or want to head present day, we have a plethora of products that you can choose from.

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

We choose vinyl over other materials for several reasons. Among these are its durability and ability to withstand harsh weather without losing its shape, as well as the fact that vinyl is among the cheapest manufacturing materials available. Despite being sturdy, it’s lightweight, and has one of the longest lifespans of any production fabric. Finally, it’s economical, by virtue of its low repair costs. Highly-priced cleansing agents, detergents, or in any other case corrosive products are not required to keep your replacement doors and windows in Alliston looking spick and span.

Overseen by the Canadian requirements association, Clera Windows & Doors installers are well trained in our own program. We have over 40 locations in Ontario and recognize that every neighborhood, home and property owner all have different needs. We work to ensure complete satisfaction. Our lifetime guarantee on all vinyl window hardware, components, and glass helps you to save money while solving a few furniture-related problems at the same time. Due to our dedication to high quality products and services, there has been massive growth in our reputation in Alliston.

Serving Alliston for Over 40 Years

You should never underestimate what windows can do for your home. When they are the right fit and properly installed, they lower your energy bill and increase the value of your home, as well as being pleasing to the eye. Clera Windows and Doors is the leading manufacturer and installer in Ontario, and we have been recognized by HomeStars as a highly-rated home supplier. Our windows are custom-made and contain a wide range of features. Vinyl windows tend to be a very popular choice, and they usually feature low-e glass. These windows come with a lifetime warranty and expert installation by staff with over 35 years of experience.

Part of what actually sets us aside from our competition is the affordable price point we work hard to craft each product around. We’ve got a specially trained and experienced team of technicians, craftsmen, and fitters that ensure every product remains seamless, from the point it rolls out of our manufacturing unit to the point it ends up in the patron’s lap—or attached to their house, to be more specific.

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

Because winters in Canada are harsh, we take particular care to make products that can withstand their high-stress surroundings. Our doors and windows have to pass strict technical inspections to guarantee that they can survive in the brutal weather before they ever make it out of our store. Moreover, our products are ENERGYSTAR certified, meaning they are environmentally friendly and help make contributions to big-scale energy savings.
Meet the Team at Clera Windows & Doors in Alliston

Doors don’t just secure your home; they also make a great first impression. Our collection of doors can do both, and you can choose from a wide variety of collections: classic, design, prestige, shaker as well as fiberglass. Our hand-picked expert technicians will install your doors professionally and carefully, and our lifetime warranty means that they can return to help with any issues that arise. Our doors are not just secure; they add style and character to your home. Every detail-including doors and windows- should reflect your home.

We love manufacturing furniture, but we get an even bigger thrill from manufacturing experiences. Customers who come on board with our industry-leading windows and doors in Alliston can expect to avail of a straightforward ordering and customization process, designed to be as easy as possible from their end. Our family-like team of specialists and technicians are another big reason we can afford to offer a no-strings lifetime warranty: that’s how much we trust them to produce at such a high level. If you’re looking for grade-A windows and doors for your Alliston home, we can offer you a completely free estimate to your next project. Visit Clera Windows & Doors at our nearest Alliston location and get your project on the move in earnest.

Don’t hesitate to get in touch with us for a free consultation and assessment of your situation. Our specialists will find a solution that is tailored to your individual needs.

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