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1-905-738-1870

Find the Best Windows for Your Home with Clera

Clera is one of Canada’s leading manufacturers and installers of custom vinyl windows and doors. We'll find a window suited to your style and budget!

Types of Windows Offered by Clera

Whether you're looking for a traditional or innovative window design, Clera has a variety of styles to meet your preferences. Our product line includes casement and awning windows, fixed or picture windows, double and single hung windows, end vent sliders, double and single sliders, bay and bow windows, and specialty options.
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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!)

Designing your dream window

You’ll never have to choose between design or functionality with Clera's Clarity™️ Casement vinyl windows styles. With almost endless options at your fingertips, achieving the look you desire is easy.

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Customizations

Step 01

Choose your Style

Choose Your Style Icon

Step 02

Choose your Colour

Vinyl Windows & Doors - Clera Windows + Doors

Step 03

Choose your Grill (Optional)

Choose Your Grill Icon

Step 04

Choose your Glass

Steve Mastrorillo, Founder - Clera Windows + Doors

Step 05

Dreams Come True

Stefano Mastrorillo, Director Of Strategy - Clera Windows + Doors

Free Factory Upgrades When You Replace Your Windows With Clera

Maximize Your Tax Savings

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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!

Celebrating 45 Years - Clera Windows And Doors

Frequently Asked Questions

What are vinyl windows?

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Vinyl windows are made of polyvinyl chloride (PVC) materials and are a popular choice thanks to their durability, energy efficiency, and low maintenance requirements. They are also highly customizable while still being affordable.

How long do vinyl windows last?

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On average, vinyl windows can last anywhere from five to thirty years depending on whether they’ve been made using recycled vinyl or 100% pure virgin uPVC. At Clera, our vinyl windows are built to last and come with a lifetime warranty for added peace of mind.

How to measure for replacement vinyl windows?

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Start by measuring the height and width of the existing window opening, including the frame. Then, measure the depth of the window jamb. Contact our team of experts today if you would like measuring and fitting assistance.

How to install vinyl windows?

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It is recommended to seek the services of a professional window installation company like Clera Windows + Doors to ensure the job is done correctly. The process typically involves removing the old window, preparing the window opening, and securing the new vinyl window in place with shims and screws. Windows need to be installed square, level, and plumb in order to operate properly for a long time.

How to clean vinyl windows?

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Start by removing any loose dirt or debris with a soft brush or vacuum. Then, use a mixture of mild soap and water to clean the window frames and glass. Rinse with clean water and dry with a soft cloth to prevent streaking. Avoid using harsh chemicals or abrasive materials that can damage the vinyl surface. For specific cleaning instructions, consult the manufacturer's guidelines or contact Clera for further assistance.

What is solar radiation and ultraviolet (UV) rays?

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Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What is energy loss?  How does it occur?  What can I do to reduce it?

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Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

Is it worth spending extra money on Low-E, Argon gas, and Warm edge spacers?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What are the advantages of Low-E, Argon, and Warm edge spacers?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What are Warm edge spacers?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What is Argon gas?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What is solar radiation and ultraviolet (UV) rays?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What is energy loss?  How does it occur?  What can I do to reduce it?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

Is it worth spending extra money on Low-E, Argon gas, and Warm edge spacers?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What are the advantages of Low-E, Argon, and Warm edge spacers?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What are Warm edge spacers?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What is Argon gas?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What is solar radiation and ultraviolet (UV) rays?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What is energy loss?  How does it occur?  What can I do to reduce it?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

Is it worth spending extra money on Low-E, Argon gas, and Warm edge spacers?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What are the advantages of Low-E, Argon, and Warm edge spacers?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What are Warm edge spacers?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.

What is Argon gas?

Down Arrow Icon

Less than half of the sun’s energy is visible. Longer wavelengths beyond the red part of the visible spectrum are infrared, which is felt as heat. Shorter wavelengths, beyond purple, are ultraviolet (UV). When the sun’s energy strikes a window, visible light, heat, and UV rays are reflected, absorbed, or transmitted into the house. Low-e glass contains transparent metallic oxides that reflect up to 90 percent of the harmful UV rays.