Hardware Preparation for Custom Steel Entrance Doors

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Steel entrance door hardware preparation means defining every lock, hinge, closer, handle and sensor in the door schedule, then sending the factory the exact drilling, cutting and reinforcement details before the door is made. Doing this early prevents costly rework on a welded steel leaf that is difficult to modify after finishing.

Why hardware preparation starts at the design stage

A steel entrance door is fabricated as one welded and finished unit, so the positions of locks, hinges and closers must be fixed before production begins. Changing a preparation after the door has been galvanized or powder coated usually means refinishing or replacing the leaf, which affects both cost and schedule.

Architects who include hardware requirements in the first drawings give the fabricator a clear basis for reinforcement and cutouts. This also helps the hardware supplier confirm that the chosen products fit the door thickness and frame.

Building the door schedule for the fabricator

The door schedule should list each opening with its size, handing, fire or security requirements, and the hardware set assigned to it. A clear schedule reduces questions during the approval stage.

Door number, leaf dimensions and thickness
Handing and swing direction
Lock type, latch and strike positions
Hinge quantity and placement
Closer, handle, peephole and intercom details

Reinforcement and internal backing

Heavy hardware such as multipoint locks, electric strikes and surface closers needs solid anchorage inside the steel leaf. Reinforcing plates or internal blocking should be specified wherever a fixing takes significant load.

Electrical routing for access control or electric strikes must also be planned before welding, since cable channels cannot be easily added later. Confirm the reinforcement layout with the fabricator and your structural or hardware consultant.

Drilling, cutouts and tolerances

Each hole and cutout should be dimensioned from a fixed reference edge, usually the leaf's hinge edge or the top of the door. Provide the hardware supplier's template or drilling sheet so positions match the actual product.

Discuss tolerances with the fabricator at the approval stage. Exact clearance values depend on the hardware and the frame, so confirm them with the engineer rather than assuming standard figures.

Coordinating with the frame and finishing

Hardware must align with the frame, threshold and any seals. Strike plates, hinge leaves and door stops should be coordinated so the door closes smoothly and the latch engages correctly after installation.

Remember that hot-dip galvanizing and powder coating add a layer to the surfaces. Specify whether hardware is installed after finishing or whether cutouts are masked and finished accordingly.

Sending a complete package to the factory

A complete preparation package usually includes the door schedule, elevation and section drawings marked with hardware positions, the supplier's templates, and any electrical routing diagrams. Photos of the existing opening help when the door is a replacement.

Once the fabricator has the package, a written specification and client approval should be completed before production starts.

Frequently asked questions

Who should supply the hardware templates?

The hardware supplier usually provides drilling templates for the specific products chosen. The architect should forward them to the fabricator with the door schedule.

Can hardware be added after the steel door is finished?

Some surface-mounted items can be added later, but concealed reinforcement, cutouts and cable routing are best planned before welding and finishing. Late changes are often costly.

Do I need to coordinate electric strikes early?

Yes. Electric strikes and access control need cable routing and sometimes reinforcement, so they should be shown in the drawings before production.

What information should I confirm with the engineer?

Exact clearances, reinforcement loads and fire or security requirements should be confirmed with the engineer. Do not rely on assumed values for critical dimensions.

Common mistakes to avoid

Architects often send the door schedule without the supplier's drilling templates, or leave electrical routing out of the drawings. Both lead to rework after the leaf is welded or finished.

Our recommendation

Share the hardware sets and templates with the fabricator at the same time as the drawings, and get written approval of every cutout before production starts.

Summary

Early and complete hardware preparation, supported by a clear door schedule and supplier templates, keeps steel entrance doors on schedule and free of costly changes.

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