The short answer
No Australian law sets a fixed interval for slip testing existing floors. What the law does set, through work health and safety duties, is an ongoing obligation to manage slip risk so far as is reasonably practicable. In practice, most commercial facilities meet that with a testing round every twelve months, tested to AS 4663:2013 and interpreted against HB 198:2014 guidance, with higher-risk areas checked more often and a retest whenever something material changes.
Why a floor that passed can fail later
Slip resistance is a property of the surface as it exists today, not as it left the factory. Several forces push it down over time:
- Traffic wear. Foot traffic polishes texture off tiles, vinyl and concrete. The busiest walking lines wear fastest, which is exactly where a slip is most likely to happen.
- Cleaning residues. Detergent films, incorrectly diluted chemicals and mop water that redeposits soil all reduce grip, sometimes dramatically.
- Sealers and polishes. A sealer or polish applied over a compliant floor can take it below guidance in a single afternoon.
- Contamination patterns. Oils near kitchens, moisture at entries, dust in warehouses. As the use of a space changes, so does its contamination.
This is why the P classification from an old report, or the R rating on the original product datasheet, is not evidence about your floor now. Our guide to Australian slip resistance standards covers what those classifications mean.
A sensible testing calendar by risk
Rather than testing everything on the same date, it helps to think in risk tiers:
- Every 12 months, as the baseline. For most commercial floors in service, an annual wet pendulum or dry floor friction test round is the widely accepted benchmark, and the interval most insurers, auditors and safety consultants expect to see.
- More often for high-risk areas. Commercial kitchens, entry foyers, pool surrounds, communal bathrooms and external ramps combine water or grease with heavy traffic. Sites that have had marginal results, or a history of incidents, often move these areas to six-monthly checks.
- Longer intervals only where evidence supports it. A reliably dry, low-traffic office floor that has passed comfortably across consecutive rounds is a reasonable candidate for a longer cycle. The key word is evidence: the decision should rest on documented results, not optimism.
Events that should trigger a retest regardless
A calendar is only half the picture. Certain events change a floor enough that waiting for the next scheduled round is not defensible:
- New flooring is installed or an area is refurbished. Testing at handover establishes a baseline and catches installation or sealing problems while the contractor is still accountable.
- A sealer, polish or coating is applied. Surface treatments routinely change slip resistance, in either direction.
- The cleaning regime changes. A new contractor, new chemicals or new equipment can alter grip within weeks.
- A slip incident or near miss occurs. Prompt testing documents the surface condition close to the event. Our guide on what to do after a slip incident walks through the full response.
- An insurer, landlord or auditor asks. Requests for current slip resistance data are increasingly common in lease obligations, insurance renewals and safety audits.
Make each round count: test the same spots
The real value of periodic testing arrives from the second round onward. Testing the same locations each time turns isolated results into a trend: you can see a foyer sliding from P4 toward P3 and rectify it before it fails, rather than discovering the failure after someone falls. A well-structured report makes this easy by identifying each test location precisely. Our guide to reading a slip test report shows what that should look like.
A documented testing history is also the strongest due diligence evidence you can hold. If an incident ever leads to a claim, a folder of dated reports showing regular testing and prompt rectification tells a very different story from a single test done years ago.
Set up a testing program for your site
We help facility managers set sensible testing intervals area by area, then keep the program running with consistent test locations and comparable reports. We test commercial sites across Melbourne, Sydney and Brisbane.