Business Details
48 Years
experience
Custom Windows and Doors in Ontario | Clera Windows
Clera Windows has been a family-owned leader in the window and door industry since 1978, serving Ontario homeowners with custom, high-quality products. Our vertically integrated model allows us to design, manufacture, and install energy-efficient solutions while maintaining factory-direct pricing. With over 45 years of experience, we prioritize innovation, offering ENERGY STAR-certified products and a non-prorated lifetime warranty. Our team of certified technicians ensures precise installations across 45+ locations, backed by an A+ BBB rating. We specialize in tailored solutions for architects, contractors, and homeowners, emphasizing durability and style.Our commitment to Canadian manufacturing supports local families, with 75% of staff referrals from existing employees. The Brilliance Line represents our most advanced product offering, combining cutting-edge technology with aesthetic versatility. Customer satisfaction remains our focus, evidenced by 300K+ happy customers and industry recognition as Ontario's most awarded window company. Our in-house financing options and government rebates make premium upgrades accessible, while our 60,000-square-foot facility ensures quality control at every production stage.
Services
Custom Windows
Energy-Efficient Doors
Vinyl Window Replacement
Patio Doors
Window Installation
Door Installation
Casement Windows
Awning Windows
Sliding Windows
Specialty Shapes
Details
- Year established: 1978
Highlights and features
- We offer factory-direct pricing with no middleman markup.
- Our non-prorated lifetime warranty covers all components.
- 45+ years of family-owned manufacturing and installation expertise.
- Certified technicians ensure precise, professional installations.
- ENERGY STAR-certified products for maximum energy efficiency.
Associations and certifications
- ENERGY STAR
- BBB A+ Rating
What people say
Knowledgeable salesperson
Amazing service
Superb job
Professional and courteous
Excellent warranty
Services
Custom Windows
Clera's custom windows are tailored to fit unique architectural needs, offering various styles, colors, and glass options. Our vinyl windows feature Pilkington Low-E Glass Technology for Canadian climates, triple-fin weatherstripping, and galvanized steel reinforcement. Designed for energy efficiency, noise reduction, and durability, these windows provide long-term value for homeowners seeking both functionality and aesthetic appeal.
Energy-Efficient Doors
Our energy-efficient doors include steel, fiberglass, and sliding patio options engineered for security and thermal performance. Features like reinforced hardware, weatherstripping, and ENERGY STAR certification ensure reduced energy costs. Customizable designs enhance curb appeal while maintaining durability against Canadian weather conditions, backed by a non-prorated lifetime warranty.
Window Installation
Professional installation services ensure precise fitting of Clera windows, performed by factory-trained technicians. The process includes removal of old windows, proper sealing with wet-glazed frames, and cleanup. Certified installers follow strict quality control protocols to maximize energy efficiency and longevity, with a focus on minimizing disruption to homeowners.
Patio Doors
Clera's patio doors combine aesthetic appeal with functional design, featuring durable materials and smooth-operating hardware. Available as sliding or garden patio styles, they offer enhanced insulation, security locks, and seamless indoor-outdoor transitions. ENERGY STAR-rated models reduce energy costs while providing natural light and ventilation.
Vinyl Window Replacement
Vinyl window replacement services address aging or inefficient windows with durable, low-maintenance solutions. The Brilliance Line offers advanced features like reinforced frames and upgraded glass packages. Replacements improve home energy efficiency, reduce noise, and require no painting or sealing, supported by lifetime warranty coverage on all components.
People
Steve Mastrorillo
Founder
Steve co-founded Clera in 1978, pioneering Canadian vinyl window manufacturing. His vision established quality standards that continue shaping the company's approach to innovation and customer satisfaction.
Vito Mastrorillo
President
Vito led Clera's transition to direct-to-homeowner sales in 1989, expanding accessibility without compromising quality. His leadership established 45+ service locations across Ontario, cementing the company's market leadership.
Stefano Mastrorillo
Director of Strategy
Stefano represents Clera's third generation, driving strategic innovation while maintaining family values. He focuses on technological advancements and sustainable manufacturing practices to meet evolving customer needs.
Questions
What financing options are available for window and door replacements?
Clera offers interest-free government loans up to $40,000, manufacturer rebates, and in-house financing programs to make upgrades affordable for Ontario homeowners.
Do your products meet Canadian energy efficiency standards?
All Clera windows and doors are ENERGY STAR-certified for Canadian climates, featuring Low-E glass technology and advanced weatherstripping to reduce energy costs.
What warranty coverage do you provide?
We offer a non-prorated lifetime warranty covering all vinyl components, hardware, and glass, transferable to future homeowners without additional fees.
How long does the installation process take?
Most residential installations complete within 1-3 days, depending on project scope. Certified technicians ensure minimal disruption while maintaining quality standards.
Can I customize window and door designs?
Yes! Choose from multiple styles, colors, glass options, and specialty shapes to create personalized solutions that match your home's architecture and preferences.
Are your installers certified professionals?
All installations are performed by factory-trained technicians with regular quality audits, ensuring precise execution and compliance with our strict performance standards.
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Reviews (4)
Jan Stiff
Nov 22, 2021
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We contracted this company to replace all the windows and our screen door in may 2021. The installation started in late July the installer did a good job on the inside but the flashing on the outside wasn't done properly and left a large gap at the bottom of the screen door. When I complained to salesman and said I would be holding the remaining balance he threatened me that he would put a lien on my home. I am still waiting for the new door and the rest of the errors to be corrected. It's been 6 months don't use this company!!!
Nathaniel Kellerman
Jun 21, 2020
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Really glad I gave these guys a call. I had a bunch of people come by and give me quotes and the numbers were all over the place. Clera's quote was definitely one of the top ones, but I'm glad I asked their rep to price match because what he did was explain that the service and job that was being offered cheaper was giving me a lot less and they were doing a lot less. I ended up paying a bit more, but the windows are fantastic, the outside of my home looks so good and more expensive now that I have the black windows.
Seth Valdez
Nov 19, 2019
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Staff were very knowledgeable and professional. They asked me the right questions so I can figure out what is the best design for the doors of my patio. I love the designs they showed me. They have several options. From getting the quote until the installation, my experience was great. Thanks Clera!
Amy Sobotka
Oct 04, 2019
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I love my new door. It's 8 foot wide door and the design is elegant. I was having the 2nd thought of getting it but the staff convinced me to get it and I was never dissatisfied. The staff really knows their job well. Very professional and friendly. For the next renovation in my house I would definitely get Clera for my doors and windows.
