10 Common Mistakes to Avoid When Installing Main Entry Security Doors (Ensure Installation Quality)

Common installation mistakes & correct practices

1. Inaccurate on-site measurement: Measure only once without considering the wall thickness and door frame gap → Correct: Measure the width, height and wall thickness for 3 times, reserve a gap of 1-2cm for installation and debugging.
2. Unlevel door frame installation: The door frame is inclined left and right/up and down → Correct: Use a level to calibrate the door frame during installation, and fix it with expansion bolts to ensure verticality and horizontality.
3. Insufficient fixing of door frame: Use a small number of expansion bolts or short bolts → Correct: Steel security door frame needs at least 6-8 expansion bolts (3-4 on each side), and the bolts must be embedded in the solid wall (not the hollow brick wall).
4. Ignoring the gap sealing: No sealing between the door frame and the wall → Correct: Fill the gap with foaming agent, and seal with glass glue on the surface to prevent air leakage, water seepage and sound leakage.
5. Rough debugging of the door leaf: The door leaf is loose or stuck after installation → Correct: Adjust the hinge and lock core after installation, ensure the door leaf can be opened and closed flexibly, and the lock tongue can be extended and retracted smoothly.
6. Damage to the anti-rust layer during installation: Scratch the steel door paint and anti-rust layer with hard tools → Correct: Cover the door surface with a protective film during installation, and repair the scratched part with touch-up paint in time.

Post-installation inspection steps (must do)

1. Check whether the door frame is firm and no shaking;
2. Check whether the door leaf is flexible to open and close, and whether the lock is sensitive;
3. Check whether the gap between the door frame and the wall is sealed without air leakage;
4. Test the anti-pry hardware (such as anti-pry bolts) to ensure it can be used normally;
5. Check whether the door surface is scratched or damaged, and confirm the installation quality with the installer.

Professional reminder