Canopy vs Retractable Gear on Up and Over Doors – The Difference That Most Buyers Miss
Buying an up and over garage door typically entails selecting a panel style and color. How the door functions is often a last-minute decision, frequently made by the installer, and more often than not, made without elaborating. It is unfortunate because the mechanism will impact daily use of the door. It will determine how far out the door swings, if the door can be automated, how the door locks, and what failsafess are built into the system.
In the UK, two main styles of mechanics are used for up and over doors: canopy and retractable. A third system, the side-spring counterbalance mechanism, is designed for extra wide and non-standard openings, but is rarely implemented for domestic use. For the majority of up and over doors, it’s either canopy or retractable.
How Canopy Gear Functions
With canopy gear, the upper section of the door opens and swings out and up. This leaves about a third of the door sticking out and acting as a canopy. The door doesn’t completely retract into the garage. It sits at an angle, with the bottom part of the door aligned with the garage and the upper part extending outside. The system uses simple pivot points, located at the top of each side of the door frame, and a couple of horizontal springs that span the length of the door frame.
Inadequate space in front of the garage door is a design problem of most canopies. It results in a damaged vehicle if the vehicle is parked too close to the garage when the swinging door is fully opened. The arc of a garage door that is about 7 feet tall requires about 18 inches of space to avoid hitting a vehicle parked in front of the garage. While that absence of space is a non-issue for a long driveway, it is a substantive problem for a short one.
Canopy designs are cheaper and easier to install, thus are preferred in most budget and mid-range up and over doors. Within the right use, it functions perfectly. The design of a canopy is more user-friendly since many of its components can be easily replaced, and in most cases, there are few components to malfunction.
Canopy design has a security trade-off. It is vulnerable to the cord-and-loop method, which involves a cord being fed through the weatherseal gap to hook the pivot release lever. This design of a canopy ensures that the seals are in contact with the mechanism, and the design is adjustable to ensure it is in the correct position. This design trade-off, however, does not justify the complete abandonment of a canopy design.
How Retractable Gear Works
Retractable gear uses a more sophisticated track system. Horizontal tracks conceal in the garage ceiling and pull the door back and up. When the door is fully open, it is completely concealed along the ceiling, and nothing is sticking out.
The main difference when dealing with retractable gear is door clearance. With retractable gear, a door can open even if a vehicle is flush with the door. Instead, it needs space along the ceiling. In order for the tracks to pull the door back, the height of the door is required along the ceiling. For example, a 7-foot door needs 7 feet of ceiling space. This can be a problem for low-sitting roof trusses and shelving along the back wall.
Retractable gear is the perfect mechanism if the door will be automated. Most commercial electric operators for up and over doors utilize retractable gear. The most common operator designs a linear motor along the door tracks. Canopy gear can be converted, but rarely done, and is not suggested by operators.
Retractable gear has a clearer advantage in locking systems. When the door is completely shut, the system secures locking bars into the side tracks. In most retractable systems, the lock engages automatically when the door shuts, requiring no manual action. Canopy systems involve manual locking, which is typically a bolt or a handle.
The Headroom Question
The total required headroom differs for both systems. Canopy gear generally requires around 70–75mm of headroom. Retractable systems typically require more, around 90–100mm, due to a track curvature that takes vertical space.
For garages where the headroom restriction is more severe, low-headroom retractable gear is an option. This system costs more and provides limited automation. In situations where headroom is less than around 90mm, canopy gear is usually the better option, with the front clearance requirement dealt with by the positioning of the driveway.
Which One to Choose
If there is no automation and a reasonable length driveway, either system is fine. Canopy is easier and cheaper to maintain.
For automation, retractable systems, unilaterally.
For a short driveway where parking close to the door is unavoidable, retractable. Otherwise, the car gets hit.
For a very low headroom garage where there is no automation planned, canopy is probably the only option.
Selecting a garage door isn’t as thrilling as you might think. Here’s why: the mechanism determines whether the door is right for the way your garage is used.