Installing Anti-Slip Stair Nosing: A Step-by-Step Guide

Getting the product and substrate assessment right before lifting a drill saves time and avoids the most preventable failures.

Profile and Colour Selection

Confirm the profile before ordering. The 50mm x 50mm profile suits stairs with square or lightly rounded step edges. The 70mm x 30mm profile suits stairs with worn or shallower-riser edges where greater tread coverage is needed.

Confirm colour before ordering as well. Yellow is required where AS 1428.1 applies, covering most public buildings, commercial premises with public access, schools, and aged care facilities. Both the 50mm x 50mm yellow and 70mm x 30mm yellow profiles are available.

Where AS 1428.1 does not apply, black nosing is appropriate. Ordering the wrong colour means returning the product before installation can begin. The stair nosing and AS 1428.1 compliance guide covers the colour contrast requirements in detail.

Substrate Assessment

Walk every step before ordering. Check for:

• Cracks, spalling, or crumbling at the leading edge
• Grease, oil, paint, or chemical contamination on the surface
• Moisture or dampness in the substrate
• Surface coatings that may not provide reliable fixing depth
• High spots or unevenness that would prevent the nosing from sitting flush

Any of these conditions requires preparation before fitting. A nosing fixed to a compromised substrate will lift under traffic regardless of how well it is otherwise installed. Confirm the WHS obligations that apply to your setting before starting; GripFactory’s guide on WHS obligations and anti-slip responsibilities covers the duty holder framework.

Tools and Materials

Gathering the right tools before starting avoids interruptions during installation and reduces the risk of errors from improvising with the wrong equipment.

The table below lists the tools and materials required for a standard PolyGrip stair nosing installation.

Surface Preparation

Surface preparation is the step that most directly determines whether the nosing holds long-term. The requirement is the same across all substrate types: the surface must be clean, dry, sound, and flat before the nosing is fitted.

The table below maps the most common substrate types to their specific preparation requirements.

Concrete

Concrete is the most common substrate for commercial and industrial stair nosing. Clean the surface thoroughly with an appropriate degreaser and allow it to dry fully. Grind down any high spots so the nosing base sits flat. Inspect the leading edge for cracks or spalling and repair before fitting. Damp concrete must be allowed to dry completely before drilling, as moisture in the substrate can accelerate corrosion at fixing points.

Timber

Timber stairs require less aggressive preparation than concrete but are more susceptible to damage if the substrate is soft or rotted. Sand any high spots and remove paint or coating from the area where the nosing base will sit. Confirm the timber is structurally sound before drilling. Fixings into soft, rotted, or split timber will not hold under traffic.

Tiles

Installing nosing on tiled stair edges requires care to ensure fixings penetrate through the tile and into the structural substrate beneath. Tiles do not provide reliable fixing depth on their own. Drill through the tile and into the substrate below using an appropriate drill bit for the tile type. Take care not to crack tiles adjacent to the fixing zone during drilling.

Steel

Steel stairs require the fixing zone to be free of rust, paint, and contamination before drilling. Use appropriate fixings for a steel substrate. Confirm the steel section is sound and that there is sufficient material thickness at the fixing location to provide secure anchorage.

Need the nosing before you start? Browse GripFactory’s PolyGrip stair nosing range.

Step-by-Step Installation

Once the substrate is prepared and all tools and materials are on hand, the installation sequence is as follows.

1. Measure and mark the fixing line. Use a tape measure and chalk line to mark the nosing position consistently across every step. The nosing should sit at the leading edge with the grip surface positioned as the first contact point on descent.
2. Cut the nosing to length if required. If the stair width is less than 1500mm, cut the nosing to the correct width using a metal cutting blade. Deburr and smooth the cut end before fitting.
3. Mark the fixing hole positions. Hold the nosing temporarily against the step edge and mark the fixing hole locations through the nosing base onto the substrate. Space fixings consistently along the length of the nosing, with fixings placed at or near both ends and at regular intervals in between.
4. Drill the fixing holes. Drill fixing holes into the substrate at the marked positions before applying glue. Ensure the hole depth is sufficient to reach sound substrate, not just the surface layer. Clear drilling debris from each hole before proceeding. Drilling before glue application avoids the adhesive skinning while you work.
5. Apply PU glue to the nosing base. Apply PU glue evenly along the full length of the nosing base. Do not allow the glue to skin over before positioning the nosing on the step.
6. Position the nosing on the step. Place the glued nosing base onto the prepared step edge, align with the pre-drilled fixing holes, and press firmly along the full length to ensure full contact between the glued base and the tread surface.
7. Insert fixings and tighten. With the nosing pressed firmly in position and the glue in contact with the substrate, insert the screws and tighten evenly to draw the nosing flat against the step edge without overtightening, which can crack the nosing base or the substrate.
8. Check that the nosing is flush and secure. Apply hand pressure and foot pressure to confirm the nosing does not rock or lift at any point. Any movement indicates a fixing or substrate issue that must be resolved before the stair is returned to use.
9. Repeat for each step. Work from the bottom of the stair run to the top, applying the same process to every step. Check each step before moving to the next.

Common Installation Errors

The table below lists the most common errors in stair nosing installation and how to avoid each one:

Compliance and Documentation

In commercial, industrial, public-access, and compliance-critical settings, installation is not complete at the point of fitting. A documented installation record supports compliance obligations under the Work Health and Safety Act 2011 and its state and territory equivalents, and demonstrates that the duty holder has taken practical steps to eliminate or minimise the slip hazard so far as is reasonably practicable.

The documentation should record:

• The stair location and step count
• The nosing product, profile, and colour fitted
• The substrate type and preparation steps taken
• The date of installation
• The installer’s name and any relevant qualifications or licences

For settings where AS 1428.1 applies, the record should also confirm that yellow nosing was fitted and that the colour contrast requirement has been met.

The stair nosing and AS 1428.1 compliance guide covers the specific requirements. AS 1657:2018 governs slip resistance requirements for stair tread surfaces in commercial settings, and AS 4586:2013 provides the slip resistance classification framework. Both are referenced in the sources below.

Ongoing maintenance inspection should also be scheduled at the time of installation, with fixings and nosing condition checked periodically and any loosening or surface damage addressed before the stair is returned to use. The non-slip stair treads and traction guide and the stair surface guide provide further context on ongoing stair safety management.

Conclusion

Installing PolyGrip stair nosing correctly comes down to three things: the right product for the stair geometry and compliance setting, thorough substrate preparation before a single fixing is drilled, and consistent fixing across every step from bottom to top. Errors in any of these three areas are the source of almost every early failure.

For residential stairs with sound substrates, this is a manageable DIY task with the right tools. For commercial, public-access, and compliance-critical stairs, professional installation provides the documented outcome that duty holders need.

The nosing profile selection guide provides further guidance on confirming the right product before installation begins. For how nosing interacts with tape and other anti-slip options, the stair anti-slip nosing, tape, and coatings guide covers the comparison in detail.