Supplying European high energy efficient windows and doors for custom builds.
Your luxury comfort framed in glass
We work with Europe’s most trusted window and façade engineers.
Europe's No. 1 window brand | 100% Made In Austria
Known for slim profile, exceptional performance, and a timeless aesthetic in architectural aluminum systems.
A world leader in premium aluminum solutions, trusted for innovation, performance, and prestige
Official Internorm dealerOntario’s leading supply & distribution partnerInterHaus European high performance windows and doors.
We specialize in supplying and installing high performance European windows and doors engineered to exceed Canadian energy efficiency standards — advanced glazing systems designed for superior thermal insulation, airtightness, durability and long-term performance in cold climates.
As an official Internorm dealer in Canada, we offer Austrian-engineered tilt and turn windows, lift-slide doors and architectural glazing systems certified for Passive House and Net Zero construction. We also supply all aluminum windows and doors from Reynaers and Schüco for contemporary homes and large glass openings.
From the initial design consultation to expert installation, we are committed to personalized service and technical excellence every step of the way.
Supply and professional installation across Canada, the USA and internationally — fully custom, tailored to your exact specifications.
Engineered in Austria. Specified for Canadian winters.
Every series below is fully custom-sized and triple glazed. Pick a material, then a model, to see the published performance figures.
Grade A aluminum cladding outside, energy-saving uPVC inside — insulated and reinforced 360°, with a 40+ year service life.
View uPVC / Aluminum details
KF 410 · uPVC / AluminumOne handle. Three positions. More freedom than any casement.
European windows combine exceptional functionality with their versatile tilt and turn operation, allowing for wide openings, sleek floor-to-ceiling designs and fully customizable shapes. Unlike casement, double-hung or sliding windows, they offer superior architectural flexibility to suit any design vision.
Handle down. Multi-point, fully concealed hardware draws the sash into a triple gasket seal — airtight, quiet and secure.
Elevate your home with industry-leading European technology and the unmatched performance of premium triple-pane windows and doors.
Daylight optimization
Slim sightlines and XL sizes with up to 73% light permeability.
High energy efficient
Triple glazing and multi-chamber frames — Uw as low as 0.62 W/m²K.
Low environmental impact
Responsibly sourced timber and long-life frames built to last decades.
Superior acoustic performance
Triple gasket seals deliver sound reduction of up to 47 dB.
Low maintenance
Non-porous uPVC and powder-coated aluminum — no repainting or sealing.
Advanced burglar protection
Concealed I-tec Secure locking, available up to security class RC3.
Passive House cottages to city renovations — across Canada.
Built for –20°C. Certified by the Passive House Institute.
Passive House windows typically achieve U-values as low as 0.65 W/m²K — standard North American windows often range from 1.2 to 2.0. Warm interior glass means no condensation, no cold radiation and comfortable seating right beside the window, even in an Ontario January.
- Passive House Institute certified window systems
- Local warehousing in Ontario
- Technical support and consultation
- Installation guidance and supervision
- Support for architects and builders
- Architectural background of our product specialists
Internorm, Schüco and Reynaers systems independently tested for Passive House construction in cold climates.
What our customers say.
“Absolutely incredible windows, best out there.”
Absolutely incredible windows, best out there, and Interhaus has been a pleasure to work with. They « saved » us after a bad experience with another windows company, and I just wish we had found them from the beginning. Seamless process with them, excellent communication throughout. A++ competent and efficient installers. Highly recommend if you’re looking for high quality windows and amazing customer service.
“The best, most reliable suppliers I have found in eastern Canada.”
My preferred window supplier for any of our projects with ambitious sustainability or indoor comfort goals. They have been easy to work with, and responsive when I need a problem solved. Internorm products have served me well, and these are the best, most reliable suppliers I have found in eastern Canada.
“The final result completely transformed our space.”
Absolutely thrilled with our new windows and doors from InterHaus! The quality is exceptional, and the energy efficiency has made a noticeable difference in our home! Viktoriya and Alex were professional, helpful, and made the entire process effortless. The installation was smooth, and the final result completely transformed our space. Couldn’t be happier—highly recommend!
“The service was better than the product.”
This was a VIP experience from start to finish. Fast, friendly and effective service. It really helped that Vik is an architect, she was able to guide us through the entire process and coordinated directly with our designer. The windows are top-notch, but the service was better than the product.
“No condensation in the winter, much quieter in summer.”
Excellent windows and doors for noise and heating and cooling. We had to install new windows in some rooms in our old house and the difference between these ones and our old ones was obvious right away, no condensation in the winter, much quieter in summer (we had very noisy neighbours), very little heat loss so the rooms were warmer in winter and cooler in summer. We were so impressed that we installed them throughout our new house. Viktoryiya was so easy to work with, and the installation was excellent and problem free!
Windows & Doors by Internorm 2026/2027 — 95 years of Austrian innovation.
- I-tec innovations — Secure locking up to RC 3 and I-tec Shading
- uPVC & uPVC-aluminium windows
- Timber-aluminium windows
- Windows with integrated blinds
- Lift & slide doors and frameless fixed glazing
- Entrance doors, colours, handles and finishes
- Renovation guide and real home stories
From the journal
Condensation Resistance in Windows: Why European Windows Perform Better in Ontario’s Cold Climate
Read more
How Passive House Windows can Reduce Canadian Energy Bills
Read more
Internorm by InterHaus I-tec Shading: Blinds Between Glass – European Windows in Ontario
Read moreGet in touch.
Looking for high performance European windows and doors in Canada? Our team assists homeowners, architects, builders and developers with expert consultation, technical guidance and project support — throughout Ontario and across North America.
