Luminance Contrast Testing FAQs

Luminance contrast testing measures the difference in light reflectance between two adjacent surfaces — for example, a stair nosing and the adjoining tread. AS 1428.1 sets minimum contrast requirements for accessible buildings under the National Construction Code.

The National Construction Code (NCC) requires compliance with AS 1428.1 for all accessible commercial and public buildings. Testing is typically required at construction handover, after refurbishment, and for ongoing accessibility compliance audits.

Stair nosings, handrails, doors and accessible path transitions require minimum 30% luminance contrast under AS 1428.1. TGSIs have specific requirements under AS/NZS 1428.4.1 — integrated TGSIs require 30%, discrete TGSIs require 45%, and composite discrete TGSIs require 60% contrast compared to the adjacent path surface.

Under AS 1428.1, most accessible design elements require a minimum 30% LRV (Luminous Reflectance Value) contrast between adjacent surfaces. TGSI requirements vary — hazard and directional indicators have different requirements.

We use a calibrated 1-degree photometer held at 1.6 metres height. The Bowman-Sapolinski formula calculates the LRV difference between surfaces. For product classification, D65 illuminant and photometric measurement are used in the laboratory.

Reports are typically delivered within 24–48 hours of the site visit. Digital delivery is standard. Urgent turnaround may be available on request.

Yes. We provide luminance contrast testing nationally, with technicians regularly servicing NSW, QLD, VIC and other states on request. Contact us to discuss scheduling in your area.

Yes. We assess all relevant accessible design elements — stair nosings, TGSIs, handrails, doors and floor transitions — in a single site visit, minimising disruption to your facility.

If surfaces fail to meet the minimum 30% LRV contrast requirement, our report will identify non-compliant elements and provide guidance on remediation. We can also re-test after remediation to confirm compliance.

Yes. Our reports are accepted by building certifiers, councils and insurers nationally. Reports document testing methodology, equipment used, measurement results and compliance status against AS 1428.1.

Yes. We offer laboratory luminance contrast testing for product classification — useful for manufacturers, specifiers and architects who need to confirm a product meets AS 1428.1 requirements before installation.

Luminance contrast testing measures visual differentiation between surfaces for accessibility under AS 1428.1. Slip resistance testing measures friction properties under AS 4586 and AS 4663. Both are often required at construction handover. Visit sliptest.com.au for slip resistance testing.