AS 4586 P4 Outdoor
Outdoor decks and boardwalks should meet P4, with re-testing recommended as timber weathers.
Anti-Slip Coating for Decks
A Wet Deck Is the Most Slippery Surface at Your Place
Timber decking is beautiful, but wet, mossy or worn smooth it's genuinely dangerous barefoot. Stellmann's coating is CSIRO-tested and certified to AS 4586 P4, and stays nearly invisible.
Free product match by surface · No obligation · We never share your information
AS 4586 P4
Certified outdoor grip, documented per area
Grain stays visible
Nearly invisible finish on timber and composite boards
UV-resistant
Formulated for Australian sun: grip stays through summer
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 Decks Are a High-Risk Slip Zone
Timber Loses Grip as It Weathers
The surface polishes underfoot, algae fills the grain in shaded spots, and deck oils can make the boards more slippery when wet, not less.
Homeowner
A guest at a backyard BBQ slips on rain-wet boards and the homeowner is suddenly reading their liability cover.
Venue
A resort boardwalk's old rigid coating has cracked and peeled, adding a trip hazard to the slip hazard.
Maintenance
A freshly oiled deck turns out to be slicker than before the maintenance.
Aged Care
An aged care facility’s outdoor deck becomes hazardous each autumn under leaf litter and moisture.
Every one of these is avoidable. Stellmann's coating reduces the slip risk and documents it, while keeping the timber looking like timber.
How professional treatment works
Slip Safety Is A Process: Not A One-Time Fix
Timber moves, weathers and picks up treatments over the years. Stellmann's system follows four documented steps matched to what is on the boards.
1
Profile
Call or send an enquiry. We assess the deck first: timber or composite, its condition and any existing oils or stains, which affect preparation. Then we match the right Stellmann product to it. On-site assessment can be arranged for venues and facilities.
2
Treat
Certified installers prepare and coat the boards, or DIYers roll on a kit over a weekend. No acid etching (a process that roughens boards by eating into them with acid), no grinding. Cured in up to 12 hours*.
3
Verify
Treated decks are certified to AS 4586 P4 at the time of treatment and testing. Professional jobs carry the FEEL-THE-GRIP GUARANTEE* (terms and conditions apply).
4
Maintain
Maintenance guide covering cleaning and seasonal algae, plus re-coat and re-test guidance, because timber moves and weathers by nature.
MULTI-SURFACE COMPATIBLE
Surfaces We Treat on Decks
Decks mix materials, and each one slips differently. Stellmann's coating is tested and rated across all the common ones.
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Have a mix of surfaces on your deck or around the pool? 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 decks
Safer Decks. Same Timber Underneath.
P4 outdoor rating
Certified wet grip for exposed decking, documented per area.
Grain stays visible
Nearly invisible finish. The deck reads as timber, not as painted plywood.
UV-resistant
Formulated for Australian sun, so grip does not disappear after one summer.
Barefoot-friendly
Fine micro-texture that grips wet feet without shredding them, suited to barefoot areas.
DIY or done for you
Roll-on kits for home decks, certified professional service for venues and facilities.
Deck Compliance at a Glance
Compliance is documented at the time of treatment and testing. We recommend periodic re-testing as part of deck maintenance.
Hospitality Duty of Care
Venues with deck areas owe guests safe surfaces, documented. Boardwalks and pool decks are the classic exposure.
Timber Compatibility
Deck treatments must cope with timber movement and existing oils or stains. Preparation is matched to the boards during profiling.
Aged Care Outdoor Areas
Facility decks must stay safely usable year-round, documented for accreditation.
Recommended Products for Decks
One Certified System. Every Deck Covered.
Stellmann Non-Slip Clear Pro is a nearly invisible coating that lifts slip resistance without changing how a deck looks. Matched to the CSIRO AS 4586 P4 rating outdoor surfaces 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
Reviewed & Trusted
We Don't Just Say It: We Certify It
Trusted by leading brands, builders & care facilities
Questions, answered
Deck Coating FAQs
Can you coat over deck oil or stain?
It depends on what is on the boards and how recently it was applied. Tell us in your enquiry; preparation is matched to the deck’s condition, and some oiled decks need a clean-back before coating. That is part of the free plan.
Will I still see the timber grain?
Yes. The finish is nearly invisible. Grain and colour stay visible, the boards just grip when wet.
Does it work on composite decking?
Yes. Composite boards weather differently to hardwood but take the coating well. Mention the brand and age in your enquiry.
Is it OK barefoot?
Yes. The micro-texture is designed for wet bare feet, which is why the same system is used around commercial and amenity decks.
How long does it last on a deck?
Years when maintained as specified. Timber moves and weathers, so the maintenance guide includes seasonal cleaning and re-coat guidance.
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.
Keep the Deck. Lose the Slip.
The deck does not need replacing, it needs grip. Call 1300 987 095 or send an enquiry for a free product match by surface for your decking.
Free product match by surface · No obligation · We never share your information
Book your free slip test
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