When a customer looks at a finished door, they see the profile, the insulated glass unit, or the decorative panel, and the handle. Everything else is hidden. The hinges are recessed into the profile. The closer is concealed in the sash. The lock is not visible from the outside. The fingerprint scanner is neatly integrated into the handle or the panel. And it is exactly this “invisible” hardware that determines how the door will perform in one year, in five years, in ten years.
In premium aluminum glazing, a door is a system. Its four key components are interconnected: the hinge type affects the closer design, the lock type determines compatibility with the access-control system, and the access-control system dictates the electrical requirements and the sash internals. A mistake in one element creates a problem across the entire chain.
I will go through each component in order—from what holds the door to what controls it. No marketing fluff, just specific brands and an honest conversation about cost.
Video
Hinges: the foundation no one sees
A door hinge is the pivot point around which everything turns. Literally. The way a door opens and closes after three years of heavy use—and whether it will keep doing so at all—depends on choosing the right hinge.
There are three types of hinges: standard surface-mounted, roller, and concealed. This is not just a difference in appearance—it is different mechanics, different load capacity, different installation methods, and different price points.
Standard Surface-Mounted Hinges: We Know Them, We Do Not Use Them
A surface-mounted hinge is what you see on doors in schools, stores, and other high-traffic commercial spaces. There are two-piece and three-piece versions. Three-piece hinges carry load better and are used where the door sees a lot of open-close cycles—but this is still a story about “reliable and inexpensive,” not about quality.
On the projects I work on, surface-mounted hinges are not used. Not because they are inherently bad, but because they are the wrong level for a private premium project. Visible and bulky, they immediately give away a budget solution on an expensive door. These are incompatible things.
Roller Hinges: The Premium Crowd’s Popular Choice
A roller hinge is the middle option between a surface-mounted hinge and a concealed hinge. It costs more than a standard hinge, but it looks significantly better. That is what we use on most projects.
In standard factory finish, roller hinges come in two colors: anodized black and anodized gray. In 90% of cases, black is the choice—it disappears into most profile colors and looks neutral. Stainless steel or paintable versions exist on the market, but those are niche options I do not use.
The key point: roller hinges are profile-specific. You cannot take any hinge and install it on any profile—they are engineered for a specific profile system. Alutech, Proff, Seal—each has its own mounting configuration. Some manufacturers took a long time to introduce roller hinges into their lineup. So when choosing hinges, always ask: which profile is it for, and is there an adapted version for it?
Concealed Hinges: When the Door Has to Read as a Monolithic Surface
A concealed hinge is fully recessed into the profile. From the outside, nothing is visible. In the closed position, the door looks like a single plane: no hinges, no gaps, no hint of the mechanics.
It is more expensive than a roller hinge—noticeably so. Concealed hinges are European-made, typically by Dormakaba (a German brand). Their load capacity is slightly lower than roller hinges, but it is still sufficient for large and heavy doors. We use them where the architectural task calls for maximum visual purity.
There is one nuance that matters at the design stage. If glass or decorative panels are bonded to the door, two adjacent elements in the concealed-hinge zone can interfere with each other when the door opens. The solution is to chamfer the edge of the bonded element and pull them apart slightly—about 10 mm. This is solved at the design stage; you just need to know it in advance.
My hinge recommendation: roller at minimum, concealed if the budget allows. Standard surface-mounted hinges are out of the question for premium residential projects.
Door Closers: Concealed Installation Only, No Other Options
A door closer is the device that smoothly returns the door to the closed position. Without one, a heavy aluminum door will either slam or stay open. It sounds simple. But even here there are three types—and I do not use two of them in a private home.
Surface-Mounted Arm Closer: Not for a Residential Home
A surface-mounted arm closer is the classic box mounted at the top of the door with an arm projecting into the room. It is always visible, it is bulky, and it looks like something from a convenience store. In commercial spaces, that is fine. In a private home, it is not. Period.
Slide-Track Door Closer: A Compromise I Make Only When I Have To
The slide track is a step up from the arm closer. It looks cleaner, but it is still visible above the door. I use this solution only in one case: when the client changed their mind after installation and wants a closer, and a concealed one can no longer be installed.
It is a compromise. It works, but it does not create a perfectly clean door.
Concealed Door Closer: the Only Correct Choice
A concealed door closer is fully recessed into the door leaf. There is nothing visible from the outside or the inside. At all. With the door open, you do not see it—unless you deliberately look into the pocket. That is what should be on every aluminum door in a private home.
In terms of specifications, concealed closers come in load-bearing capacities of up to 150 kg and up to 190 kg. For doors up to 2.5 meters high, the standard Alutech profile configuration requires 150 kg. For doors between 2.5 and 3 meters, 190 kg is required, but its body is larger and only fits in the HD version of the profile. This should be factored in at the design stage, not afterward.
About FOB—the Hold-Open Device.
It allows the door to be mechanically held open at a set angle. Many clients want this function: the door opens to 90 degrees and stays there so it does not close by itself. Very convenient when you are carrying in groceries or moving back and forth.
Locks: From a Single-Point Latch to a Motorized Mechanism
The lock is what actually keeps the door closed. And here the difference between the cheapest solution and the right one is not just price—it is how the door will behave every day.
Single-Point Locks: One Point, One Risk
A single-point lock provides one locking point in the handle area. A latch if it is a lever handle. A roller if it is a pull handle or another non-latching handle. It works, it is inexpensive, and it installs quickly.
The downside is obvious: one point. Under pressure on the sash, the door can flex. On a large aluminum door, especially in the sun, the slab can start to move slightly. The lock does not hold the full perimeter. For a budget project, that is fine. For premium glazing, it is not.
Standard Multi-Point Lock: Three Points, but It Takes Effort
A multi-point lock secures the door at three points: the center latch plus the top and bottom bolts. That is already a different level of rigidity. But the standard version has an inconvenience: the top and bottom bolts do not extend automatically. You have to close the door and lift the handle, or turn the key, and only then everything engages. It works, but it requires a conscious action from the user every time.
Automatic Multi-Point Lock: Slam It Shut, and It Is Locked
The automatic lock solves that problem. When the door slams shut, all three engagement points—the center, top, and bottom—extend automatically. Nothing else needs to be done. Slam the door, and it is already locked at three points. That is how a door should work.
As for price: single-point—about about $50, standard multi-point—about about $150, automatic—about $300. In the context of the total project cost, the difference is not large. Once you explain the distinction to a client, everyone chooses the automatic version. You just have to explain it clearly.
Day/Night Mode: When You Do Not Want to Scan Every Time
This is an option that not many people know about, but it is ordered more and more often. The setup: you install a door with a motorized lock and a fingerprint reader. Everything looks good, everything is automatic. But when you are home, you do not want to scan your finger every time you go out to the terrace or let a child in. You just want to open the door.
The day/night system makes that possible. It requires two special components: a lock with a mechanical selector (not every lock supports it—this is a specific part number) and a strike plate with a day/night selector. Set both to Day mode—the top and bottom bolts no longer extend when the door slams shut, and the center latch is not blocked either. The door opens with a simple pull—no scanner, no key. In the evening or when you leave the house, switch it back, and everything returns to normal.
This option costs only a little more than a standard automatic lock, but it significantly improves everyday comfort.
Motorized Lock: for Integration with an Access Control System
A motorized lock is the next level. Mechanically, it is the same automatic multi-point lock, but with an electric motor inside. The point of the motor is this: when the access-control system sends a signal from outside—a scanner, keypad, or phone—the motor instantly retracts all bolts. The door opens. No key, no handle, in a fraction of a second.
A motorized lock starts at around 1,000 euros. Plus the cost of the access-control system. It is expensive, but it is a different level of convenience and a different level of smart-home integration. The motorized lock is the pivot point around which the entire access-control package is built.
Access Control Systems: From a Battery-Powered Handle to a Biometric Door
Access control systems are what operate the lock from the outside. Four fundamentally different levels, from budget to flagship.
Level 1: Lever Handles and Cylinders with an Integrated Reader
The most affordable option. A standard lever handle or profile cylinder with a built-in reader—card, phone, key fob. It runs on batteries, so no wiring needs to be pulled. It installs on an existing door with no problem.
It is a practical solution where light automation is needed without major infrastructure. An office door, a utility-room door, a gate—this is where it makes sense. For the entrance door of a premium private home, it is already too modest.
Level 2: Electromechanical Strike in the Strike Plate
The leaf has a standard lock. In the strike plate on the frame there is an electromechanical strike with power. Its job is to block and release the latch on signal. Any access-control system can be connected to this strike: keypad, card reader, fingerprint scanner.
The advantage of this solution is flexibility. On our side, we run the wires to the required location, and the low-voltage contractor on the client’s side connects whatever system they choose. We handle aluminum assemblies, not low-voltage systems—so this is often exactly how we phrase it: we will bring the wiring to the point, and after that the smart-home specialists take over.
Level 3: Motorized Lock + Integrated Access Control System
This is where the premium level begins. A GU or KFAV motorized lock plus an integrated system from a manufacturer such as EK. What is in the package: the scanner itself (fingerprint or another biometric method), the power supply, a Bluetooth module for phone control, and the whole setup is integrated with the lock motor.
The scanner can be placed in different ways: on the frame, on the sash, or built into the handle. You place your finger—scanner reads it—signal goes to the motor—bolts retract—the door opens. All in a fraction of a second.
This also includes the contact unit I described in the article about doors with ADECO panels. The wiring from the scanner or the lock has to get onto the leaf somehow—the GU contact unit does that without cable ducts: one half on the frame, the other on the sash. When the door is closed, the contact is made and power flows. When open, the circuit is broken. It also serves as the power supply: 220 V in, 24 V out, right where you need it.
Level 4: Schuco Inlivo System—the Market Flagship
This is what I call “for serious people with a serious budget.” The Schuco door system with the signature Inlivo bar—a hollow vertical strip that becomes part of the door’s unified design. Into this bar you can integrate whatever the specific project needs: a house number, a video camera, an iris scanner, a keypad, a fingerprint reader, or an intercom monitor.
The last one is especially interesting: the monitor can show a list of residents or staff. A visitor walks up, selects the person they need, and that person receives a call on their phone. Conversation, identification—and the door opens remotely from a phone, from anywhere in the world with internet access. It is a full video intercom, biometrics, access control, and smart home solution in a single housing.
The price of this solution goes beyond what is reasonable for most projects. But where a client wants exactly this, there is nothing else on the market with this level of integration.
How It All Connects: The Logic of Choosing the Door’s Hardware Package
The four components—hinges, closer, lock, and access control—are selected not separately, but as a system. Here is how I think when I am designing a door.
The starting point is the class of the project and the budget. A premium private home: concealed or roller hinges, concealed closer with FOB—no exceptions. Lock: automatic multi-point at minimum, motorized if possible. Access control: according to the client’s wishes and budget.
The next question is whether access automation is needed. If yes, the motorized lock has to be included when the profile is ordered, because it requires preparation. Wiring must also be planned in advance, together with the fabricator. Contact unit or cable routing—this is decided at the design stage, not during installation.
If you want a day/night system, confirm the lock part number before ordering. Not every automatic lock supports this function. The strike plate is also a special part.
The concealed closer should be specified when the profile is ordered—otherwise post-installation milling either costs a lot or is simply impossible. If the client is undecided, it is better to include it upfront. You cannot easily remove it later, but you cannot just add it later either.
The hinges are selected for the specific profile system. Ask the profile manufacturer which hinges are adapted for the exact series. Concealed hinges are the best visual choice, but if there are bonded elements (glass or panels), you must chamfer the edge and keep adjacent panels 10 mm apart in the hinge zone.
Conclusion
A good aluminum door is not just a profile and glass. It is a system in which every component affects the next. The right hinges carry the right weight. The concealed closer shuts the door without slamming and without a clumsy metal arm on top. The automatic lock secures it at three points without extra steps. The access-control system opens it—when needed and for whom it should.
All of this has to be specified at the design stage, discussed with the client before production starts, and not changed after the fact without losses. My job is to make sure the client understands what they are choosing before they sign off on the specification. After that, it is harder, more expensive, or no longer possible.
