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Windows, doors, siding… you name, we do it. Learn More >
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We have patio doors to suit every style and budget. Learn More >
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We go to great heights to ensure customer satisfaction. Testimonials >
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Escape a cold, drafty winter with efficient vinyl windows. Learn More >
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Our vinyl siding looks great and comes with a Lifetime Warranty More >
Welcome to duotemp.ca We’re an exterior home improvement company specializing in replacement windows in St Catharines and the surrounding area. How can we help you?
Working with us
Quality product & even better warranty
As a Gentek Premier Renovator you get access to the best products backed by a rock solid manufacturer’s warranty.
Expert installation
Our master tradesmen don’t cut any corners and the pride in their work shows in every detail.
You’ll save money
Our competitive pricing and energy efficient products means save you money now and in the years to come.
Tested and true
After 60+ years we know this business inside and out. We’ve built trust and longevity through dedication and honesty.
