Specialist Service

Height Bars & Access Control

Stop tall vehicles damaging your basement, sprinklers, ramps and ceilings — once.

AS/NZS Compliant

Fully Insured

After-hours Available

What's included

The scope, in detail.

A single van strike on a basement sprinkler can cost more than ten years of preventive work. Our height clearance bars use a sacrificial alloy bar across hi-vis steel uprights — the bar bends, the structure doesn’t. Sized to your ramp, with reflective signage, and tested before handover.

Galvanised steel uprights, painted hi-vis

Sacrificial alloy clearance bar

Reflective height-warning signage

Core-drilled or bolt-down install

Custom widths to match ramp

Boom gate & wheel-spike preparation

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Standards we work to

Built to Australian Standards.

Every height bars & access control install we deliver references these standards. We hand them over in writing at sign-off.

AS 2890.1

Off-Street Parking — Cars

Minimum 2.2m clearance for car-only car parks; signage required where clearance is less than 2.3m.

AS 1742

Traffic Control Devices

Specifies retroreflective height-warning signage including chevron patterns, character heights and Class 1 reflective requirements.

AS 1428.1

Access for Disability

Where height bars affect accessible-bay approach, alternative clearance routes may be required.

Common questions

Height Bars & Access Control, answered.

Why install a height bar if there's already a sign?

A sign tells the driver. A bar physically prevents them. The bar hits before the sprinkler, ramp ceiling, or basement plant does — and the bar is sacrificial, designed to bend cheaply.

What height should the bar be set to?

Typically 50–100mm below your lowest fixed obstacle (sprinklers, ducts, beams). For most basements: 1.9m, 2.0m or 2.1m. We measure the actual obstacle height on site, not the architect's drawing.

What happens when a vehicle hits the bar?

The crossbar (alloy or hollow steel) bends or detaches. The uprights are designed to survive most impacts. We replace the bar on a service call — usually under $400 including labour.

Do height bars come with signage?

Standard install includes a Class 1 reflective height-warning sign above the bar, plus a ground-stencil warning on the approach. Custom signage available.

Can you install on an existing car park?

Yes — for surface installation we core-drill and chemical-anchor the uprights. For new builds we cast-in baseplates during slab pour. Both are equally strong.

What's the difference between a height bar and a boom gate?

A height bar is passive and protects against tall vehicles. A boom gate is active and controls all vehicle access. Many sites use both at the same entry point.

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