If you are searching for anti-slip tape by width, you already know what you need. You have a spec, a surface, or a compliance requirement in front of you, and you are looking for the right product to match it.
100mm anti-slip tape sits at an important point in the width range. It is wider than the standard 50mm nosing strip but narrower than full-tread formats. That makes it the specification of choice for a specific set of stair edge, ramp, and platform applications where 50mm is not enough coverage and a full-tread solution is not warranted.
This blog covers where 100mm is the correct specification, where it is not, and how to confirm the right width for your specific installation under Australian Standards.
Why Width Is a Compliance Decision, Not Just a Sizing Choice
Most buyers select anti-slip tape width by feel: wider seems safer, narrower seems neater. The reality is that width selection for step edge applications is governed by AS 1428.1 (Design for Access and Mobility), and getting it wrong in either direction creates a compliance problem.
AS 1428.1 specifies that the luminance contrast strip at a step nosing must be:
- Minimum 50mm deep across the full width of the path of travel
- Maximum 75mm deep — anything wider than this is non-compliant for luminance contrast strips on step nosings in public access buildings
- Set back no more than 15mm from the front of the nosing
- Extending no more than 10mm down the riser face
This means 100mm tape is not the correct specification for a standard AS 1428.1-compliant step nosing strip. A 100mm-wide strip applied to a step nosing in a public access building exceeds the 75mm maximum and is therefore non-compliant.
That is not a reason to avoid 100mm tape. It is a reason to understand exactly where it belongs.
Where 100mm Anti-Slip Tape Is the Right Specification
Wide Stair Treads Requiring Full Coverage
For stairs where the full tread surface needs anti-slip treatment rather than just the nosing edge, 100mm provides substantially more coverage than a nosing strip. Applications include:
- External concrete stairs with no nosing profile, where the full tread leading zone needs coverage
- Industrial stairs with open treads or grating where a wider grip band is needed
- Steep residential stairs where a single nosing strip does not provide adequate grip area for the full foot contact zone
- Any stair tread where the surface has degraded across a wider zone than just the leading edge
In these applications, 100mm is not functioning as a luminance contrast strip under AS 1428.1. It is functioning as a surface treatment under AS 4586, and the width specification is driven by grip coverage rather than contrast band requirements.
Ramps and Sloped Walkways
Ramps present different grip challenges to stairs. The continuous slope means foot contact occurs across a broader area of the tread than on a horizontal step, and the risk of sliding is distributed across the full width of the foot plant. A 50mm nosing strip at the base of a ramp addresses the transition point; it does not address the slip risk across the ramp surface itself.
100mm tape applied in parallel strips across a ramp surface provides:
- Broader grip contact zone per strip
- Wider visible marking band for pedestrians
- Greater coverage per metre of tape installed compared to narrower widths
For ramp installations, your compliance obligations under Australian Standards cover both the grip requirement under AS 4586 and the contrast requirement under AS 1428.1 at the top and base transitions.
Loading Docks, Platforms, and Industrial Edges
In industrial settings, width requirements are driven by hazard exposure rather than DDA compliance. Loading dock edges, platform perimeters, and mezzanine leading edges all benefit from wider tape coverage because:
- Heavy footwear requires more grip surface area than standard footwear
- Wet and contaminated conditions in industrial environments reduce effective grip area
- High-visibility marking across a wider band is more effective in busy operational environments
100mm coarse-grit tape on industrial platform edges covers both the safety marking and grip functions in a single product. Browse the coarse grade anti-slip tape for the grit grade suited to wet and heavy-traffic industrial zones.
Handrail Posts and Structural Transitions
100mm tape is also used around base plates, structural transitions, and floor-level obstacles where a wider grip and marking band is needed to alert pedestrians to the hazard zone at their feet, not just at the step edge.
The Full Width Spectrum: Choosing the Right Format
Width Selection by Application
Width | Primary Application | AS 1428.1 Compliant for Nosing Strip | Key Use Case |
25mm | Handrails, narrow nosings, curves | No — below 50mm minimum | Handrail grip, tight profiles |
50mm | Standard stair nosing, step edges | Yes — minimum compliant width | Public access step edges |
75mm | Wide nosing profiles, step edges | Yes — maximum compliant width | Wide tread step edges |
100mm | Full tread coverage, ramps, platforms | No — exceeds 75mm nosing limit | Ramps, industrial edges, wide treads |
150mm | High-risk industrial, full tread | No — exceeds 75mm nosing limit | Heavy industrial, full tread treatment |
The 50mm black standard tape is the minimum compliant width for AS 1428.1 step nosing applications in public access buildings. The 50mm yellow standard tape adds the luminance contrast function required for DDA compliance. The 100mm black standard tape suits applications where grip coverage is the primary driver rather than compliance strip width. Where even wider coverage is needed across industrial treads or ramp surfaces, the 150mm black standard tape provides maximum surface coverage per strip.
The 100mm black standard tape suits applications where grip coverage is the primary driver rather than compliance strip width. Where even wider coverage is needed across industrial treads or ramp surfaces, the 150mm black standard tape provides maximum surface coverage per strip.
Grit Grade by Environment
Width and grit grade are independent decisions. The correct grit grade depends on the environment, not the width:
- Standard grit: Dry indoor environments, light to moderate foot traffic, clean surfaces
- Coarse grit: Wet areas, outdoor installations, industrial environments, heavy foot traffic
- Aqua/transparent variants: Aesthetic-sensitive environments where surface visibility matters
For stair edge installations across all surface types, coarse grit is the recommended specification wherever the stair is exposed to weather, cleaning water, or wet footwear.
Installation for 100mm Tape on Stair Treads and Ramps
100mm tape requires the same surface preparation discipline as any other width. The larger adhesive area increases bonding strength, but only if the surface is correctly prepared. A wider strip with poor prep fails faster than a narrower strip with good prep.
- Clean the surface: Remove all grease, oil, wax, and cleaning product residue. On concrete, degrease and rinse. On steel, solvent-wipe to bare metal. On timber, sand any high-gloss seal coat before application.
- Dry completely: 100mm tape has a larger adhesive area and traps moisture more readily than narrow tape if applied wet. Allow a minimum of two hours drying time in ambient conditions.
- Measure and pre-cut: Cut to length before peeling the backing. A 100mm strip is harder to reposition than a 50mm strip and more prone to folding on itself mid-application.
- Apply from one end with even pressure: Work consistently across the full 100mm width. Uneven pressure leaves air pockets under the wider format that cause early edge lifting at the sides.
- Seal all four edges: The longer edge runs and wider side edges of 100mm tape create more potential lifting perimeter. Seal all edges in any wet or outdoor installation.
- Cure before traffic: Minimum 24 hours before foot traffic. Extend to 48 hours in cold, humid, or outdoor conditions.
For permanent stair nosing installations where tape is not the right long-term solution, polygrip stair nosings provide a fixed alternative with longer service life. The full stair safety guide covering nosings and treads is worth reviewing if the installation involves multiple stair types or a mix of tape and hardware solutions.
Australian Standards: What Governs 100mm Tape Applications
Two standards apply depending on the application context:
- AS 4586 (Slip Resistance Classification of New Pedestrian Surface Materials): Governs the slip resistance performance of the tape surface itself. Correct P-rating requirements by zone:
- P3 for wet internal areas: building entries, public toilets, and public building floors
- P4 for external and exposed zones: walkways, balconies, car parks, and ramps not steeper than 1:14
- P5 for ramps steeper than 1:14 and up to 1:8 gradient when wet
- AS 1428.1 (Design for Access and Mobility): Governs contrast strip width at step nosings in public access buildings. 100mm tape exceeds the 75mm maximum for AS 1428.1-compliant nosing strips. Use 50mm or 75mm tape where the contrast strip function is the primary compliance requirement.
Compliance documentation for any tape installation must include:
- Product specification including width and grit grade
- Surface type and specific location treated
- Installation date and installer details
- Photographs of the completed installation before traffic exposure
Order 100mm Tape That Matches Your Specification
If you have a spec in hand and need to order, the decision tree is straightforward:
- Step nosing in a public access building: use 50–75mm, not 100mm
- Ramp surface treatment, wide tread coverage, or industrial edge marking: 100mm is the correct width
- Wet or outdoor zone: specify coarse grit regardless of width
- High-visibility requirement alongside grip: specify yellow in the appropriate width
Browse the full anti-slip tapes range to compare all widths, colours, and grit grades side by side, or go directly to the 100mm black standard tape to place your order. Not sure your specification is correct for the application? Contact the GripFactory team for a compliance-focused recommendation before you order.
FAQs
No. AS 1428.1 specifies that the luminance contrast strip at a step nosing must be between 50mm and 75mm deep. A 100mm strip exceeds the 75mm maximum and is non-compliant for public access step nosing applications. For AS 1428.1-compliant nosing installations, use 50mm or 75mm tape. For ramp surfaces, wide tread coverage, and industrial applications, 100mm is appropriate.
100mm is the right width for applications where grip coverage is the primary driver rather than a compliance contrast strip. This includes ramp surface treatment, wide stair treads requiring full-tread coverage, loading dock and platform edges, and industrial hazard zone marking. In these contexts, there is no upper width limit under AS 4586; the specification is driven by the coverage area required.
Coarse grit is the correct specification for any outdoor installation. Outdoor stairs are subject to wet footwear, weather contamination, and organic debris such as leaves and moss, all of which reduce effective grip on standard grit surfaces. Coarse grit delivers a higher friction coefficient under wet conditions and is more resistant to contamination buildup between cleaning cycles.
Calculate based on your actual tread width: each strip requires one metre of tape per 1000mm of tread width. An 18-metre roll covers 18 strips on a 1000mm-wide tread, or 15 strips on a 1200mm-wide tread. Measure your tread width first, divide 18,000mm by that figure, and round down to get your strip count per roll. For installations requiring multiple strips per tread, multiply accordingly and add 10% for wastage and off-cuts.
Tape is a surface-applied solution that requires no structural modification, installs in minutes, and can be replaced without specialist trades. A permanent stair nosing provides a raised leading edge, is recessed into or mechanically fixed to the tread, and typically lasts 10 or more years before replacement is needed.
Tape suits retrofits, temporary installations, and budget-constrained applications. Permanent nosings are the preferred specification for new construction and major refurbishment.
Standard 100mm tape has limited conformability on tight curves because the wider format creates more tension across the outer radius. For curved surfaces, a flexible anti-slip tape format is better suited as it can follow the radius without lifting at the edges. For gentle curves or large-radius transitions, 100mm standard tape can be applied in short sections with edge sealing to manage the tension at the curve.
