Inward-tilting bottom-hinged hopper sash with full exterior insect screen and multi-chamber vinyl frame.
Hopper Basement Windows
Inward-tilting bottom-hinged vinyl hopper windows custom-engineered for Ontario basements, laundry rooms, and tight exterior window wells.
Key Engineering Features
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Hopper Window Configurations & Applications
Engineered specifically for poured-concrete foundation openings, finished basement rec rooms, and ground-level bathrooms.
Most Popular🔍 EnlargeStandard Inward-Tilt Basement Hopper Windows
Our signature basement replacement window—featuring heavy-duty concealed bottom hinges, a top cam lock, and a full-size exterior fibreglass mesh screen.
- ✓Zero exterior projection—ideal for window wells and driveway walls
- ✓Both sides of the glass clean easily from inside the basement
- ✓Custom-built to fit non-standard concrete foundation openings
High Insulation🔍 EnlargeFinished Basement & Rec-Room Hopper Systems
Upgraded with Cardinal® LoĒ-272 or triple-pane argon glass and warm-edge Super Spacer® to keep finished basement living spaces warm and dry.
- ✓Eliminates cold floor drafts and winter window-sill condensation
- ✓Available with vinyl jamb extensions and easy-clean interior casing
- ✓Optional frosted privacy glass for bathrooms and street-facing wells
Low-E Glass Coatings, Warm-Edge Spacers, Retractable Screens & Security Film
Click any engineering diagram or specification chart below to inspect the full-resolution version in our interactive viewer or open it in a new tab.
🔍 Click to Enlarge DiagramMulti-Chamber uPVC Cross Sections
100% virgin uPVC multi-chamber extrusions create dead-air thermal barriers inside the sash and frame, eliminating interior frost and structural bowing.
🔍 Click to Enlarge DiagramWarm-Edge Super Spacer® Technology
Non-metallic silicone foam and Endur spacers keep glass edges up to 16°F warmer than legacy aluminum spacers—preventing winter perimeter condensation and mold.
🔍 Click to Enlarge ChartCardinal® LoĒ-180, LoĒ-272, LoĒ-366 & LoĒ-i89
Tailor solar heat gain by elevation: LoĒ-180 for passive winter solar heating, LoĒ-272 for all-season balance, LoĒ-366 for sun-drenched exposures, and LoĒ-i89 room-side coatings.
🔍 Enlarge PhotoRetractable & Fold-Away Window Screens
Disappearing Marquis and Ultra Fold-Screen systems roll out of sight when windows are closed, letting in up to 20% more natural winter daylight.
🔍 Enlarge PhotoAnti-Shatter Window Security Film
Multi-layered optically clear security film bonds glass to the frame to deter main-floor break-ins, prevent hazardous glass shattering, and block 99% of UV rays.
🔍 Enlarge SwatchesGentek Colours, Internal Grills & Casings
Choose from UV-cured exterior paint colours, Colonial/Prairie/Perimeter internal grills, and custom brickmould & vinyl jamb extensions.
Hopper Basement Windows in Vaughan, Markham & the GTA
Old single-pane wood or steel basement windows are one of the biggest sources of winter heat loss, basement dampness, and drafts in GTA homes. Our custom vinyl hopper windows are precision-built for Ontario foundations—delivering airtight compression sealing, bright natural light, and effortless inward-tilting ventilation.
Recent GTA Window Installations
🔍 EnlargeGrand 2-story brick facade retrofit with contemporary black architectural windows and arched transom
📍 Richmond Hill, ON
🔍 EnlargeCustom black panoramic picture bay window retrofit with flanking low-E casements
📍 Markham, ON
🔍 EnlargeContemporary charcoal high-efficiency triple pane casement windows on brick exterior
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🔍 EnlargeModern black thermal-frame casement windows installed on residential horizontal siding
📍 York Region, ON