DDA Anti-Slip Aluminium Stair Nosing | 67mm × 55mm | Part M Compliant | 8 Colours

DDA anti-slip stair nosing — 67mm x 55mm ramp profile

If you are specifying step edges for a school, hospital, council office or any building that has to demonstrate accessibility compliance, a standard 44mm domestic nosing rarely satisfies the inspection. This is the deeper DDA section: 67mm across the tread with a 55mm front face, extruded from 3mm aluminium and fitted with a permanently bonded PVC anti-slip insert. The extra width gives a broader band of colour contrast at the step edge, and the deeper face caps the top of the riser where the wear happens. Being surface-mount, it goes down over flooring already laid — laminate, vinyl, LVT, lino, carpet tile, timber or bare concrete — without lifting anything.

Why this profile works

Contrast is what Part M is actually asking for

Approved Document M and BS 8300 are not prescriptive about the metal. They are concerned with whether someone with limited vision can tell where one step ends and the next begins, which is a question of luminance contrast between the nosing and the surrounding floor. That makes insert colour the decision that matters most, and the 67mm tread band gives a wider, more legible stripe than a domestic profile can.

3mm extrusion, not folded sheet

The section is extruded at 3mm gauge rather than pressed from thin sheet, which lets the 55mm face stay square under trolley wheels and constant heel strike instead of denting along the arris.

The insert is bonded, not clipped in

The PVC insert is bonded into the channel during manufacture, so there is no clip-in strip to curl at the ends, work loose or go missing after a mop. The supplier rates the insert surface R11 for internal heavy-traffic and public use. The aluminium is supplied mill finish.

• 67mm tread width and 55mm front face — deeper coverage than a standard nosing
• 3mm extruded aluminium with a bonded PVC insert, rated R11 by the supplier
• Eight insert colours, including high-visibility yellow and red
• Retrofits over existing floor finishes; supplied pre-drilled with fixings and cover pips

Where it is used

Schools, colleges and university buildings; NHS hospitals and health centres; council offices, libraries and civic buildings; stations and transport premises; retail, leisure and hospitality. It is also specified on domestic stairs where an occupant has a visual impairment and the step edges need to read clearly.

Specifications

Choosing your colour and length

Colour. Choose for contrast against the floor you actually have, not for the look of the metal. Yellow is the default on accessibility-critical stairs: it holds contrast against almost any floor and stays legible to most forms of colour blindness. Red is the common alternative in schools and on escape routes. Black and grey suit pale floors, white and beige dark ones. Brown and blue are usually chosen to match a scheme rather than to maximise contrast, so check them against the floor on a compliance job.

Length. Measure the full width of the tread and take the next size up, then cut down. A 1000mm suits most domestic flights; 1500mm and 2000mm cover the majority of commercial staircases; 2500mm and 3000mm are for full-width public stairs and concourses. Order one per tread.

Installation, use and care

Cut to the exact tread width with a fine-tooth metal blade or an angle grinder and file the ends smooth. Set it hard against the step nose with the insert facing up, mark through the pre-drilled holes, drill pilots and fix down. Use the supplied fixings into timber; on concrete use a masonry anchor, stainless steel where the stair is exposed to damp. Press the cover pips into the countersinks. Clean with normal floor detergent and a soft brush, avoiding abrasive pads and solvent cleaners.

Frequently asked questions

Does this profile make my stairs DDA compliant on its own?

No single product does. Compliance depends on the whole staircase — going, rise, handrails and lighting as well as step-edge definition. This nosing addresses the contrasting step-edge requirement in Part M and BS 8300; the rest of the stair still has to meet the guidance.

What contrast should I be aiming for?

BS 8300 guidance is normally read as at least 30 points of difference in light reflectance value between the nosing and the adjacent tread. If you know the LRV of your floor finish, choose the insert colour that opens the widest gap against it.

Can it be fitted to an existing staircase?

Yes. It is designed to be fitted retrospectively over flooring that is already down, which suits refurbishment and maintenance programmes.

Ordering and delivery

Select your insert colour and length above, then order one nosing per tread. Longer lengths travel as an oversize consignment, so allow for that when booking site access. For a length not listed, or an undrilled profile for a bonded installation, contact us before ordering.