About InterHaus, the Official Internorm Window and Door Dealer in Canada
InterHaus Premium Windows and Doors supplies and installs high-performance European windows and doors for custom homes, Passive House projects and modern architecture across Canada. We work from a showroom and local warehouse in Oakville, with product specialists whose backgrounds are in architecture and construction.
A European window specialist built around technical support
InterHaus Premium Windows and Doors is headquartered in Oakville, Ontario, and is the official Internorm dealer in Canada. Alongside Internorm’s Austrian-made windows and doors, we supply all-aluminum window and door systems from Reynaers and Schüco. That gives architects, builders, developers and homeowners a single partner for tilt & turn windows, lift-slide doors, entrance doors and large architectural glazing.
Our focus on European systems comes down to performance. Typical North American windows sit somewhere between 1.2 and 2.0 W/m²K. Internorm’s KF 410 reaches a Uw value as low as 0.62 W/m²K, with six-chamber frames and three layers of gaskets as standard. In a province where winter temperatures frequently drop below –20°C, that gap shows up in heating bills, in the draft you feel beside the glass and in whether condensation forms on the inside of the pane.
We concentrate on projects where that performance matters: luxury custom homes, Passive House and Net Zero builds, renovations of older houses, and contemporary designs with large openings. Every window and door is made to measure, so our conversations start with drawings, details and goals rather than a catalogue price.
See the windows at full size in Oakville
Our showroom at 217 Speers Rd. Unit 8 in Oakville is set up so you can judge the products the way you will live with them: at full size, with real hardware, real glass and real frames. Display bays under the hexagon lighting hold windows and doors you can open, tilt and close yourself.
It is the easiest place to compare options side by side. An AT 540 entrance door stands beside a KF 410 sidelight, lift-slide doors show how easily a heavy sash moves on its rollers, and the window displays let you see how uPVC, uPVC/aluminum and wood/aluminum frames differ in profile and finish.
The showroom also works well as a meeting point for a homeowner and their architect or designer. Questions drawings cannot settle, such as how slim a sightline looks, are answered in minutes in front of the product.
- Tilt & turn windows in several frame materials and design styles
- Entrance doors, including the AT 540 with a KF 410 sidelight
- Lift-slide doors and large-format glazing
Why architects, builders and homeowners choose InterHaus
A window supplier decides how a building performs for decades. These are the things we put in place so the windows perform as well on site as they do on paper.
Direct sourcing from Europe
We work directly with Internorm, Reynaers and Schüco, so specifications, options and technical questions go straight to the manufacturer.
Architectural expertise
Our product specialists come from architecture and construction. They read drawings, discuss details and match each opening to the right system.
Fully custom sizing
Every window and door is made to the sizes and configurations of your project, from a single bathroom window to a wall of lift-slide doors.
Passive House certified systems
We supply window systems certified by the Passive House Institute, including the Internorm KF 410, for Passive House, Net Zero and high-performance homes.
Local warehousing in Ontario
Products are received into our Ontario warehouse and coordinated from there to your site, which keeps delivery under local control.
Installation and supervision
Our qualified fitters install, or our team supervises your own installer on site, so the connection between window and wall is done properly.
After-sales support
After handover we stay available for adjustments, hardware fine-tuning and small repairs, so your windows keep operating smoothly.
Backed by Europe’s No. 1 window brand
Internorm has been a family business for 95 years. It began as a one-man locksmith’s workshop and grew into Europe’s biggest window brand, with more than 30 million window and door units delivered. Every one of them is made in Austria, at Internorm’s three production facilities in Traun, Sarleinsbach and Lannach.
Internorm employs around 2,000 people across Europe and works with more than 1,300 distribution partners in 21 countries. It runs its own research department and an in-house development and testing centre, and develops its own technologies, including I-tec Secure concealed locking and I-tec Shading blinds between the panes. You can read about them on our I-tec innovations page.
Internorm only works with approved and qualified partners, and expects them to deliver a full service: professional consultation, careful installation and dependable after-sales support. As the official Internorm dealer in Canada, that is the standard we hold ourselves to.
From Austrian production to our Oakville showroom
Four ways to work with us
Projects differ in who installs, who runs the site and how much support the team wants. Our services are set up to fit each arrangement.
Supply Only
Windows and doors delivered on time from our local warehouse to your site, with logistics coordinated directly with the builder, architect or homeowner. Suited to crews who install European tilt & turn systems themselves.
Supply & Install
A start-to-finish service: delivery coordination followed by on-site installation by our qualified fitters, who place every window and door with precision.
Supply & Supervision
For projects where a third party installs. We deliver the products and our team supervises on site for a few days, checking handling, fitting and finishing against our standards.
After-Sale Service
Help once you have moved in: greasing hinges, fine-tuning hardware and dealing with minor issues, so your windows and doors keep working smoothly for years.
How an InterHaus project comes together
Every project is custom, but the sequence is consistent.
- 01
Conversation and consultation
We start with your drawings, photos or ideas, at the showroom, on a call or by email, and discuss performance goals, design intent and how the building will be used.
- 02
Technical review
Our specialists review the openings, wall assemblies and details, then recommend systems, glazing and hardware for each opening. Architects and designers can work with us directly at this stage.
- 03
Detailed quotation
You receive a quotation built around the actual window schedule, with each unit specified by size, opening type, material, design style and glazing. Passive House projects can get a quote within 72 hours.
- 04
Made to order in Austria
Once the specification is confirmed, the order is placed and your Internorm windows and doors are manufactured to measure in Austria.
- 05
Delivery through our Ontario warehouse
Products arrive at our local warehouse and are delivered to site on a date coordinated with your builder or site lead.
- 06
Installation or supervision
Our fitters install, or we supervise your installer on site, with close attention to an airtight connection between window and wall.
- 07
Handover and aftercare
We check operation with you and remain available for after-sale service.
A team with design and construction in its background
Window projects tend to go wrong at the interfaces, between the architect’s detail and the rough opening on site. Our team is built to cover that gap. Between us we bring experience in architectural technology and detailing, CAD and technical design, domestic logistics and site coordination, and qualified, experienced installation.
In practice, the person who helps you choose a window can also talk through the sill detail, the air barrier connection or the structural opening with your designer. It is the part of our service clients mention most, as the review below shows.
For trade professionals, the same support extends to drawings and documentation. Architects, designers and builders can register for our trade portal for CAD and Revit files, specification sheets and installation guides, or book a PHI Lunch & Learn for their office.
“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.”
Serving projects across Canada from Oakville
InterHaus supplies and installs windows and doors across Canada. Many of our projects are in Ontario and Québec, and our project pages include homes in Niagara-on-the-Lake, Etobicoke, Kingston, Toronto, Ottawa and Québec.
Distance changes the logistics, not the standard. For projects far from Oakville, Supply & Supervision lets a local installer do the work while our team is on site to guide handling, fitting and finishing. For Supply Only orders, we coordinate delivery from our Ontario warehouse directly with your site.
In Ontario, our supply and installation service areas include Toronto, Oakville, Milton, Mississauga, Burlington, Hamilton, Halton, Niagara-on-the-Lake, Muskoka, Kingston and Ottawa.
About InterHaus: common questions
Yes. InterHaus is the official Internorm dealer in Canada. We supply the Internorm range of uPVC, uPVC/aluminum and wood/aluminum windows, windows with integrated blinds, frameless glazing, lift-slide doors and entrance doors, all made in Austria.
For all-aluminum windows and doors we supply Reynaers and Schüco systems, suited to slim profiles, large glazed openings and folding doors.
No. We work on new custom homes, Passive House and Net Zero builds, multi-unit residential projects and renovations. For occupied homes, we plan sequencing and site protection with you before work starts.
Yes. Homeowners come to us directly, as do architects, builders and developers. If you already have an architect or designer, we are glad to coordinate with them on details and schedules.
Yes. We supply Passive House Institute certified window systems, including the Internorm KF 410, as well as PHI certified configurations of the Schüco AWS 90.SI+ and Reynaers MasterLine 10. Our Passive House page explains the options.
Contact us. Our after-sale service covers maintenance and adjustments such as greasing hinges, fine-tuning hardware and small repairs. Internorm windows and aluminum entrance doors also carry a QR code in the rebate that links to product information, cleaning tips and your distribution partner’s contact details.
Start with a conversation
Send us your drawings or visit the Oakville showroom. We will help you choose the right system for each opening and explain how supply and installation would work for your project.