U3 - The world's longest lasting sign | Identimark

Proven to last a lifetime.

Built for reliability where the cost of failure is high.

Its UV-blocking polymer resin keeps critical safety messages visible and compliant for decades - so you’re not facing faded signs, failed audits, or worse, putting people and communities at risk.

With anti-graffiti protection, zero maintenance, and a lifetime guarantee, U3 helps protect your team, your assets, and your compliance record - without compromise. U3 performs in the harshest conditions and has been field-proven to last over 32+ years.

U3_Brand_Module Image_1240x200 (4) (1)

	U3 signage	Aluminium	Colourbond
Life Expectancy	32 years +	3 - 8 years	2 - 5 years
Guarantee	Lifetime*	Limited guarantee	Limited guarantee
Material Thickness	3 - 5mm	1 - 3mm	1mm
Impact Strength	Exceptional	Medium	Medium
UV Protection	Lifetime Fade Free	Temporary 2 - 6 years	Temporary 1 - 4 years
Anti-Graffiti	Exceptional - Text Subsurface	Text partly or fully exposed	Text is partly or fully exposed
Heat Performance	Exceptional - no change	Peeling/warping	Good
Corrosion Resistance	Minimal or no corrosion	Some corrosion resistance	Minimal

Applications across every asset.

From substations to solar farms, pipelines to power poles; U3 signage is engineered to perform across every asset. Trusted in the harshest environments, it keeps critical information visible, compliant, and built to last.

Tower and pole ID plates

Long-life asset identification with custom data

Arc flash and electrical hazard signage

Engineered for safety and auditability

Pipeline, fence and boundary signs

Durable perimeter and access control signage

Custom variable-data labels

Site-specific IDs, barcodes, and numbering

QR code and digital-ready options

For traceability and smart asset integration

U3 Signs in action.

Engineered for extremes. Trusted for life.
U3 signs are the industry standard for durability and compliance in solar, gas, rail and mining. Built to withstand Australia and New Zealand’s harshest conditions, they stay legible, fade-free and maintenance-free for over 30 years—no matter the environment.

See U3 in action across real-world projects

See field-tested case studies

How long does U3 signage last?

U3 has been proven to last over 32 years in real-world conditions and comes with a lifetime guarantee.

What makes U3 different from standard signage?

U3 uses a UV-blocking resin polymer, making it fade-free, anti-graffiti, marine-grade, and fire-retardant.

Is U3 compliant with AS/NZS standards?

Yes. U3 signage is compliant with AS1319:1994 and utility-specific requirements for high-voltage assets.

Can I customise the signage?

Yes. All U3 signage can be fully customised to meet your requirements. Whether it’s specific wording, colours, logos, or unique sizes, we can tailor each sign to suit your site and compliance needs.

Can I customise U3 signage for variable data or QR codes?

Absolutely. U3 supports full customisation, including asset ID, barcodes, and laser-etched QR codes.