Extreme Windows & Entrance Systems
Since established, Extreme has been designing and manufacturing premium windows and entrance systems from its facility in Moncton, New Brunswick. Built around a singular commitment to superior craftsmanship, every Extreme product is engineered to withstand Atlantic Canada's demanding climate while delivering exceptional energy efficiency and lasting durability.
From contemporary window systems to distinctive entrance doors in steel and fiberglass, Extreme products are built to exacting standards with industry-leading warranty protection for homeowners and builders who demand reliability and performance.
Extreme Windows
Extreme windows are designed with performance and customization at their core. Each unit can be specified in multiple configurations—from classic double-hung and casement styles to premium hybrid PVC-aluminum systems—with full flexibility in dimensions, colors, glazing options, and hardware to match any architectural vision.
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Styles: Awning, casement, single and double hung, single and double slider
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Materials: Vinyl, fiberglass, and hybrid PVC-aluminum systems
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Climate-tested: Engineered and tested at -30°C for Atlantic Canadian performance
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Fully customizable: Dimensions, colors, finishes, glazing, and hardware
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Energy-efficient: ENERGY STAR® certified for lasting comfort and environmental responsibility
Extreme Entrance Systems
Extreme's entrance system program delivers a complete range of steel and fiberglass doors, patio doors, and garden doors, each engineered for the region's climate and finished to the highest standards. Every entrance system can be combined with sidelites, transoms, and custom glazing to create a distinctive architectural statement, while the Quick Ship program offers rapid delivery of popular configurations without compromising on quality.
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Exterior doors: Steel and fiberglass in virtually any size, panel layout, and finish
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Patio & garden doors: Sliding and specialty configurations with full customization
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Quick Ship program: Distinctive entrance systems with accelerated delivery
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Climate-engineered: Designed and tested to perform in Atlantic Canada's challenging conditions
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All doors engineered and manufactured in Moncton, New Brunswick
Extreme: Quality Built for Atlantic Canada
Extreme operates from its manufacturing facility in Moncton, where every product is engineered for the region's rigorous climate. The brand's investment in advanced production technology and quality craftsmanship gives it a manufacturing standard that delivers confidence to homeowners, builders, and designers.
For projects that demand reliability and performance in Atlantic Canada's climate, Extreme's team works directly with dealers, contractors, and builders from specification through to installation, ensuring every finished product meets the original vision.
Why Choose Extreme for Your Next Project
Whether your project calls for a complete window package, distinctive entrance doors, or energy-efficient systems engineered for lasting comfort, Extreme's climate-tested performance, superior warranty, and 40+ years of regional expertise make it the right choice for Atlantic Canadian homes that demand more.
Extreme Windows & Entrance Systems are available through our network of dealers at several locations across Eastern Canada.
Since 1984, Portatec has been designing and manufacturing custom premium doors and windows from its facility on the South Shore of Montreal. Built around a singular commitment to true custom fabrication, every Portatec product is conceived, engineered, and finished in-house, giving architects, designers, and homeowners access to a level of design freedom rarely found in the category.
From distinctive entry doors in steel, fiberglass, and wood to contemporary windows and refined interior collections, Portatec products are available through Ultimate Windows, Doors & More across Quebec for projects that refuse to settle for off-the-shelf.
Your vision, our expertise
At Ultimate Windows, Doors & More, our specialists put all their expertise at the service of your architectural visions. Bring your most ambitious projects to life thanks to our expertise in innovation and design.