Custom steel portal-frame buildings, Strathroy, Ontario: Conventional steel. Custom engineered. Built for generations.
Portex Building System makes custom conventional-steel portal-frame buildings for manufacturing, distribution, agriculture and aviation, engineered, detailed and fabricated in Strathroy, Ontario. Each one is designed around your operation, not a pre-set template.
Design freedom. Engineered strength.
Standard pre-engineered systems work within fixed limits. Portex uses conventional steel and custom engineering, so you get the building your project needs, with more design freedom and better long-term performance.
| Portex portal frame | Standard pre-engineered |
|---|---|
Custom heights to suit your needs | Heights limited to manufacturer standards |
Flexible layouts with fewer interior columns | More interior columns at set spacing |
Architectural flexibility to match your plans | Limited design options |
Stronger, more durable conventional steel | Lighter gauge limitations |
Easier to modify or expand later | Difficult and costly to modify |
Built for the work you do
All applications
Manufacturing
Facilities engineered around your process, with flexible layouts and custom clear heights.

Distribution
Warehouses with wide clear spans, dock-ready layouts and erection support.

Agriculture
Equipment storage, shops and processing, built for Canadian conditions.

Aviation
Clear-span hangars with tall door openings and room to expand.
One team from concept to completion
Engineering, detailing, fabrication, delivery and erection support, coordinated by one team.
Consult
Early budgeting and planning support for your project.
Design and engineering
Custom structural design, tailored to your project.
Detailing
Every member is detailed in-house before it reaches the shop floor.
Fabrication
Fabrication in our Strathroy shop, with precision fit-up and quality control.
Delivery
Steel delivered to your site, ready to build.
Erection and support
Erection support for the portal steel frame, metal roof and siding.
Local manufacturing. Local support.
Every Portex building is engineered, detailed and fabricated by our team in Strathroy, Ontario. Engineering, fabrication and project support all stay close to home.
- Ontario-based engineering and fabrication
- Conventional steel portal frames built to your requirements
- Better coordination from design through erection
- Reliable quality control and responsive project support
- A local team that understands your market

Tell us about your building
Tell us what the building is for, roughly how big, and where it will go. Our estimating team will take it from there.
- Call
- 519-518-0246
- Visit
- 1 Industrial Road, Strathroy, ON N7G 4J5