Bifold doors for hangars, farm sheds and industrial buildings.
Custom steel-frame bifold doors for aircraft hangars, machine sheds, quonsets, cold storage and industrial shops. Built in Winkler, Manitoba, sized to virtually any opening and shipped across Canada and the United States.
Bifold hangar doors, designed by a pilot for pilots.
Diamond Doors was founded by a former commercial pilot. Our aircraft hangar doors fit private hangars, hangar homes, T-hangars and commercial hangars, and open at the push of a button, so you spend less time wrestling a sliding or panel door and more time flying.
Agricultural bifold doors for machine sheds, quonsets and barns.
Farm shop and machine shed doors for cold storage, insulated shops, potato storage and livestock barns. Install one on a new post-frame building or retrofit an older quonset that still has sliding doors. Every door is engineered to your local wind load rating.
Industrial bifold doors for big openings and heavy daily use.
Automatic bifold door systems for manufacturing plants, welding and repair shops, crane buildings, public buildings and storefronts. A low-maintenance, long-term investment for openings too big for a standard overhead door.
Same door system. Built for your building.
Whether it hangs on a hangar, a quonset or a manufacturing plant, every Diamond Door ships with the same industry-leading features.
Explore Features & OptionsTrusted in hangars, farm yards and shops.
This door has extended my flying hobby by many years, not having to wrestle with a large door every time I use my airplane.
The door itself is really well built and seals nice in winter. It’s made the building way more usable versus the sliding doors I had before.
I have repaired and upgraded a lot of hangar doors in my career, and Diamond Doors are by far the best I had to work with.
Common questions about bifold doors
What sizes do Diamond bifold doors come in?
Every Diamond bifold door is custom built to fit your opening, so we can make virtually any width and height for hangars, machine sheds and industrial buildings. Send us your opening size through the quote form or a local dealer.
Can a bifold door be retrofitted on a quonset or older building?
Yes. Diamond bifold doors suit new post-frame buildings and retrofits of older quonsets and farm sheds that currently use sliding doors.
What happens to a bifold door if the power goes out?
An emergency brake holds the door in place if the power fails, and a manual opener lets you open and close the door without power in an emergency.
Are Diamond bifold doors rated for wind loads?
Yes. Each door is engineered to the wind load rating for your area.
How long does it take to install a bifold door?
A typical installation takes about three hours, even if it is your first door. Our installation guide and factory support team are there to help.
Why choose a bifold hangar door over a sliding door?
A bifold door opens automatically at the push of a button and uses the full width of the end wall, so there is no heavy sliding door to push or track to keep clear. An optional auto-lock lets you open, close and lock the door with one button.
Is a Diamond bifold door certified?
The Genesys electrical box is UL 325 and CSA 22.2 certified, and the aircraft-grade lift cables are rated with a 10× safety factor.
Do you ship bifold doors to the United States?
Yes. Diamond Doors builds bifold doors in Winkler, Manitoba, and ships them across Canada and the United States, with local support from our dealer network.
Not sure which door fits your building?
Talk through your project with our team, with no obligation, or build your quote online in a few minutes. You can also browse real installs in our case studies and photo gallery.
Agriculture
Our bi-folding doors are suited for any agricultural application, including cold storage buildings, insulated shops, and livestock barns. Whether you are constructing a new post frame building, or want to retrofit an old quonset, a Diamond bi-fold will optimize your clear opening. Each door is engineered to the building locations wind load ratings so you can be sure your door is secure. Our emergency brake prevents the door from coming down during a power outage. And if you need to bring the door down to a safe position? The emergency manual opener can operate the door without power. Our cable lift doors are a low maintenance, safe, and long lasting solution – all at a competitive price.
Industrial
Diamond Doors manufactures automatic bi-folding industrial door systems for a variety of commercial applications. Bi-fold doors are a great option for manufacturing facilities, public buildings, and storefronts. Our design can be modified to allow for overhead cranes, to be scaled to large sizes, or to accommodate specialty exterior finishing. The long lasting and low maintenance design gives you the best return on your investment. Diamond Doors are a practical, high quality investment for your building.