Frequently Asked Questions
Our doors can literally be mounted to any type of building. The two most common ways of fastening our door to your building is mounting the door directly to the buildings structure or using our Free Standing Header System. Consult with Diamond Doors or a Diamond Doors dealer to see what will work best for your application.
No! By mounting our door hinges up in your truss, you should maintain your full wall height clear opening. We can also miter the corners of the door to fit your building profile, or we can extend up past your roof line to achieve the full clear opening.
Typically 18’ wide and smaller, sectional doors are less expensive. With that said, this is only relating to the initial purchase price. If you add the additional maintenance cost you will find a bi-fold door is well worth the investment within a couple of years. A Diamond bi-fold door has very few moving parts compared to a sectional overhead door. Plus, our bi-fold doors components are heavy duty and designed for commercial and industrial applications.
If you open your bi-fold door half way, the full opening is effectively losing heat. Compared to a sectional, a half opened sectional is only losing heat out of half the opening. So when the door is opened, a bi-fold will lose more heat. But, when a bi-fold door is closed and locked it is sealed tight against the outside of your building. With only the center hinge as a possibility for frost to penetrate through. The Diamond insulation panel is fastened to the outside of the door frame creating a full thermal brake for the entire door. A sectional is on the inside of the building. With any wind pushing against the door allows cold air to blow in from the sides. Also, every 24” section has a frost penetration point. So consider this: If you open and close your door 10% of a day, a bi-fold would be 90% efficient 90% of the time. A sectional door being only 50% efficient would only be 50% efficient 90% of the time. Ultimately the bi-fold door will save you money on your heating bill!
(Physics 101) – When a strap wraps around a drum, the drum size is increased with every wrap. Every wrap causing the door to lift faster and faster. A cable lift winding on a driveline is a constant speed from start to finish. Consider both doors to have the same electric horsepower opener with the same gear reduction. A cable system starts off using the full horsepower of the opener. This is constant from start to finish. With the strap system, it has to start slower so the electric opener can provide enough power at the top to keep the door opening. So when the strap system starts, it is only using a faction of the electric openers horsepower and is using the maximum horsepower at the top (because of the drum size increase). So with the cable lift using max horsepower from start to finish and the strap system only using max horsepower at the finish… Where is the time savings?
In our competitors defence, their strap systems do run faster than THEIR cable systems. Their “AVERAGE” speed of a strap lift is 16 ft/ min. Their constant speed for cable lift is 13 ft/ min. Our standard cable lift speed is 18 ft/ min. We also offer a speed increase as an option.
We offer 2 different types of “wind protection”. For wood buildings we offer a J channel roller track and for steel buildings or doors with our Free Standing Header System we offer column followers. Even with either option, we would not recommend operating the door in extreme wind conditions.