Gates, boundary walls and doors: automatic gate and door safety, materials and fixing, sealing, and maintenance

The gate and boundary wall are the first thing a visitor sees, but what matters most is safety, especially with heavy automatic gates and doors. This guide starts with safety from an official source, then gives practical questions on materials and installation.

1) Automatic door and gate safety

Door and gate operators are covered by the U.S. standard UL 325, Safety for Door, Drapery, Gate, Louver and Window Operators and Systems1. The U.S. Consumer Product Safety Commission (CPSC) publishes these recommendations for automatic garage doors2:

• Automatic reversing: an opener that does not reverse on contact is a hazard to children; repair it or replace it with a reversing opener.
• Additional protection: an electric eye, a door edge sensor, or equivalent; an electric eye should be installed 4 to 6 inches (about 10–15 cm) above the floor.
• Reverse test: place a 2x4 on the floor in the door's path; if the door does not reverse on striking it, disengage the opener until it is adjusted per the owner's manual, repaired or replaced.
• Regular inspection: check the door and opener every 30 days.
• Balance: a balanced door stays in place when stopped part-open; an unbalanced or binding door needs a professional.
• Children: mount the wall button as high as practical, and keep remotes out of reach.

These recommendations are written for garage doors; the same principles (reversing, sensors, regular testing) apply in practice to sliding and swing driveway gates. Ask the supplier for proof that the operator meets a recognised safety standard.

2) Boundary walls

Practical advice:

• Height and appearance are subject to municipal requirements; ask before building. See shades and screens.
• Block walls need footings, columns and a tie beam per the design, especially on expansive soils. Diagonal cracks in a wall are a sign of ground movement.
• Wind: screens and panels on top of a wall add wind load; do not add a tall screen to an existing wall without technical advice.
• Water: do not let irrigation or downpipe water discharge at the wall base. See water around the building.

3) Doors

4) Maintenance

• Inspect the automatic door or gate every 30 days to make sure it works properly, including the reverse test2.
• Clear sand and gravel from sliding gate tracks, and lubricate hinges and wheels per the manufacturer.
• Review paint and rust yearly. See the preventive maintenance plan.
• Power to the operator is licensed electrician work with outdoor-rated wiring. See outdoor electrics.