Disability Discrimination Act (DDA)
Public buildings must provide safe, usable wheelchair access. A ramp that is unsafe when wet undermines that duty.
Anti-Slip Coating for Wheelchair Ramps
Accessible Means Safe in the Wet Too
NDIS participants, OTs, access consultants and facility managers: a wheelchair ramp that grips when dry but slides when wet is not accessible, it is a hazard with a handrail. Stellmann’s anti-slip coating for wheelchair ramps is CSIRO-tested and certified to AS 4586, with the P-rating matched to your ramp’s gradient: P4 for standard grades, P5 for steeper ramps. That gradient matching is what accessibility audits and NDIS funding applications look for.
Free site assessment · No obligation · DDA / NDIS eligible contexts supported
P4/P5 by gradient
Matched to ramp incline: the steeper the grade, the higher the P-rating
Castor-wheel safe
Fine, even micro-texture: no ridges that catch wheelchair wheels
DDA & NDIS contexts
Documentation for access compliance and NDIS modification reports
P4/P5 gradient-matched
Certified 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 Wheelchair Ramps Are a High-Risk Slip Zone
DDA Gradient Is Not Enough: The Surface Still Needs Grip for Wheels, Feet and Carers
A ramp adds gravity to every other slip factor. Wheels lose traction, carers lose footing, and water runs down the slope instead of draining off it.
NDIS Participant
A wheelchair user cannot safely use a public building’s access ramp in rain, and the building receives a formal accessibility complaint.
NDIS Home Modification
An NDIS participant’s home ramp needs documented slip resistance before the modification can be funded.
Aged Care
An aged care facility’s ramp fails an accessibility audit because the old surface treatment has worn smooth.
Healthcare Clinic
A clinic’s entry ramp becomes slippery in wet weather and a carer is injured steadying a chair.
Every one of these is avoidable. Stellmann's coating reduces the slip risk and documents it, while keeping the surface smooth for wheels and safe for feet.
How professional treatment works
Assess the Gradient. Certify the Ramp. Document for Access Records.
The process accounts for gradient, surface type and the access compliance context: NDIS, DDA or WHS.
1
Profile
Call or send an enquiry. We assess the ramp first: gradient, surface and exposure. Then we match the right Stellmann product and set the target rating: P4 for standard grades, P5 for steeper ramps, in line with AS 4586 and the HB 198 guidance that maps locations to P-ratings. On-site assessment and slip testing can be arranged for facility and public-building projects.
2
Treat
Certified installers coat the ramp and landings. No acid, no etching, no grinding. Most ramps are coated in a day; allow up to 12 hours for the coating to cure.
3
Verify
The ramp is certified to its AS 4586 P-rating at the time of treatment and testing, with the certificate written against the ramp’s gradient. Professional jobs carry the COMPLIANCE GUARANTEE* (terms and conditions apply).
4
Maintain
Maintenance guide plus re-test schedule, so the access your certificate promises is still there next audit.
WHEELCHAIR RAMP SURFACES
Wheelchair Ramp Surfaces We Treat
Wheelchair mix materials, and each one slips differently. Stellmann's coating is tested and rated across all the common ones.
Concrete
Poured and brushed concrete wheelchair access ramps: home, healthcare and commercial.
Metal
Steel and aluminium modular wheelchair ramps and access platforms.
Timber
Hardwood and treated timber wheelchair ramps: home modifications and heritage buildings.
For general commercial and loading ramps (not wheelchair access), see the ramps page.
Why it works for wheelchair ramps
Safe for Wheels. Safe for Feet. Documented for Access Records.
Gradient-matched P4/P5
The rating is set by the slope, which is exactly what DDA-related audits and NDIS applications check.
Funding-ready documentation
Slip-resistance certificates written for OTs, planners and access consultants.
Grip for wheels and feet
Micro-textured finish that helps chairs track and carers keep footing, without a rough surface that catches castors.
Up to 12 hours cure
Most residential ramps are coated in a day and usable after 12 hours.
No surface damage
Applied over concrete, metal or timber without etching or grinding.
Wheelchair Ramp Compliance at a Glance
Compliance is documented at the time of treatment and testing. We recommend periodic re-testing to keep records current.
AS 4586 with HB 198 Guidance
Slip ratings are matched to location and gradient: P4 for standard ramps, P5 for steeper grades. Generic one-rating treatments often fail gradient-specific audits.
NDIS Home Modifications
Funded ramp modifications need documented slip resistance. Stellmann provides certificates written against your ramp’s gradient for the application.
National Construction Code (NCC/BCA)
Access ramps in commercial and public buildings carry slip-resistance requirements that affect certification.
Recommended Products for Wheelchair Ramps
Gradient-Matched. Castor-Safe. P4 or P5.
Match the product to the ramp gradient. Not sure which applies? Send an enquiry with the ramp details and gradient and we'll confirm.
Success Stories
Healthcare and Aged Care Facilities: Wheelchair Ramp Certification Across Multiple Sites
Stellmann has delivered gradient-matched anti-slip treatment and P-rating certification to healthcare and aged care facilities across Australia: fine, even micro-texture safe for wheelchair castor wheels, documented for access audits and DDA compliance. Each ramp is assessed individually and certified to its correct P4 or P5 rating.
Reviewed & Trusted
We Don't Just Say It: We Certify It
Trusted by leading brands, builders & care facilities
Questions, answered
Wheelchair Ramp Coating FAQs
What P-rating does a wheelchair ramp need?
It depends on the gradient. Standard ramps are typically P4 and steeper ramps P5 under AS 4586 with HB 198 guidance. We confirm the rating from your ramp’s actual slope as part of your free product match, because that is what an audit will check.
Will the texture affect wheelchair wheels?
No. The finish is a fine micro-texture, not ridges or strips. Chairs track normally, walking frames and sticks do not catch, and the surface is easy to keep clean.
Can this be funded as an NDIS home modification?
Stellmann coatings are suitable for NDIS-funded ramp modifications, and we provide the slip-resistance documentation OTs and planners need for the application.
How fast can a home ramp be done?
The coating is applied in a few hours and needs up to 12 hours to cure. When the ramp is the only way in and out, we plan the work so the cure window causes the least disruption.
Does it work on metal ramps?
Yes. Concrete, metal and timber ramps are all treated, each with surface-appropriate preparation. See the metal surfaces guide for detail.
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 Ramp Safe in Any Weather
Access that disappears when it rains is not access. Call 1300 410 901 or send an enquiry for a free, gradient-matched plan for your ramp.
Free site assessment · No obligation · NDIS and DDA contexts supported
Talk to a Slip Safety Specialist
Tell us the ramp gradient, surface and setting and we'll come back within one business day.
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