AS 4586 P4 Outdoor
Outdoor common areas should meet P4 slip resistance, with re-testing recommended given weather and organic growth.
Anti-Slip Coating for Courtyards
Strata and Facility Managers: The Courtyard Is Common Property, So Is the Liability
Courtyards are shared outdoor floors: rain, shade, moss and every resident, worker or visitor on site. Stellmann's coating is CSIRO-tested and certified to AS 4586 P4, applied in stages and cured in up to 12 hours.
Free product match by surface · No obligation · We never share your information
AS 4586 P4
Certified grip for shared outdoor areas, documented per section
Staged
Sections stay open while treatment progresses
No acid
No etching or grinding: the courtyard keeps its look
Outdoor P4 rated
Tested to AS 4586 at the time of treatment
Reviewed & Trusted
What is AS 4586?
AS 4586 is the Australian Standard slip test: the surface is tested wet and given a P rating from P0 to P5, and the higher the number, the more slip resistance it has.
Why Courtyards Are a High-Risk Slip Zone
Shade, Moisture and Every Resident: All in One Space
Courtyards trap shade and moisture, so pavers grow moss and algae that stay slick long after rain stops. They are also the one outdoor space everyone crosses. Falls are Australia's leading cause of injury hospitalisation (AIHW, Injury in Australia 2024-25), and shared spaces put that risk on the owners corporation's desk.
Strata
An apartment resident slips on rain-wet courtyard tiles carrying groceries, and the strata committee faces the claim.
Aged Care
An aged care facility restricts courtyard access in winter because the pavers are hazardous, and resident wellbeing suffers with it.
Office
An office building's lunch courtyard develops moss and an employee slip triggers a WHS review.
Body Corporate
A body corporate wants the space treated without shutting it for days: staged, overnight work is the requirement.
Every one of these is avoidable. Stellmann's coating reduces the slip risk and documents it, while keeping the look of the courtyard you already have.
How professional treatment works
Slip Safety Is A Process: Not A One-Time Fix
Slip safety is a process, not a one-off product. Stellmann's system follows four documented steps.
1
Profile
Call or send an enquiry. We assess the courtyard first: surfaces, shade and drainage problem spots. Then we match the right Stellmann product, with P4 as the outdoor target. On-site assessment and slip testing can be arranged for strata and facility projects.
2
Treat
Certified installers work in staged sections, often overnight, so the courtyard stays usable. No acid, no etching, no grinding; sections are cured and walk-ready in up to 12 hours.
3
Verify
Treated areas are certified to AS 4586 P4 at the time of treatment and testing, backed by the FEEL-THE-GRIP GUARANTEE* on professional jobs (terms and conditions apply).
4
Maintain
Maintenance guide plus a re-test schedule for the committee's records, with algae-season cleaning built in.
MULTI-SURFACE COMPATIBLE
Surfaces We Treat in Courtyards
Stellmann’s coating is tested across the surfaces courtyards are actually made of. Read the guide for your surface:
Tiles
Ceramic & porcelain pavers and courtyard tiles.
Concrete
Exposed aggregate, polished and brushed concrete.
Natural Stone
Sandstone, bluestone, travertine and slate pavers.
Timber
Hardwood and composite timber decking.
➝
Mixed surfaces in one courtyard? Tell us what's there and we will spec the right treatment for each zone as part of your free product match.
Why it works for courtyards
Safer Shared Spaces, Without the Trade-Offs.
P4 outdoor rating
Certified grip for shared outdoor areas, documented per section for strata and facility records.
Minimal disruption
Staged, low-odour application. Residents keep using the space while sections cure.
Algae-season ready
UV and weather resistant, with a maintenance plan that deals with the moss that comes back every winter.
Committee-ready paperwork
P-rating certificates per treated area for strata and facility records.
Nearly invisible
The courtyard keeps its look. No industrial mats in a residential or hospitality space.
Courtyard Compliance at a Glance
Compliance is documented at the time of treatment and testing. We recommend periodic re-testing to keep records current.
Strata Common Property Duty
Courtyards are common property. The owners corporation must keep them safe and be able to show how.
Aged Care Quality Standards
Outdoor access matters for resident wellbeing, and facilities must keep those areas safe year-round, documented for accreditation.
Work Health and Safety
Office and facility courtyards used by workers fall under WHS duties for safe walking surfaces.
Recommended Products for Courtyards
One Certified System. Every Courtyard Covered.
Stellmann Non-Slip Clear Pro is a nearly invisible coating that lifts slip resistance without changing how a floor looks. Matched to the CSIRO AS 4586 P4 rating outdoor shared areas need.
Success Stories
Northcote Eco Village: Residential Shared-Space Coating
Northcote Place is a newly developed sustainable village in Melbourne. The houses use renewable energy and achieve an impressive NatHERS rating of 8 stars. Besides excellent insulation, the houses incorporate sustainable materials. Stellmann Aqualine PU PRO, our VOC-free, slip-free concrete floor coating has been used to upgrade the garages.
WHY FAMILIES TRUST STELLMANN
Proven Where a Slip Costs the Most
Google
37 reviews
Judge.me
285 reviews
Trustpilot
11 reviews
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Trusted by leading brands, builders & care facilities
Questions, answered
Courtyard Coating FAQs
How do you treat a courtyard without closing it?
In stages. Sections are coated, cured and reopened progressively, usually overnight, so residents always have a path through. Most courtyards are finished across one or two sessions.
Will it stop the moss coming back?
The coating adds certified wet grip; it is not a herbicide. Moss and algae still need seasonal cleaning, which the maintenance guide covers, but a treated surface grips even when organic film starts to form and is easier to clean.
What rating does a courtyard need?
P4 under AS 4586 for outdoor common areas. Covered sections may differ; your free product match specifies per zone.
What paperwork does the strata committee get?
A P-rating certificate for each treated area, valid at the time of treatment and testing, plus the maintenance and re-test schedule for the records.
Will it change the courtyard's appearance?
The finish is nearly invisible on pavers, tiles, stone and concrete.
Does the coating change how a gloss tile looks?
On a gloss tile the sheen can change slightly toward satin; that is the only visible difference most customers notice.
Make the Shared Space Safe to Share
The committee that treats the courtyard before the incident writes a minute. The one that does not writes to the insurer. Call 1300 987 095 or send an enquiry for a free product match by surface.
Free product match by surface · No obligation · We never share your information
Book your free slip test
Tell us about your courtyard and we'll come back within one business day.
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